ENTRY 20213 20170425 22612021300000001 SUBENT 20213001 20170425 22612021300100001 BIB 11 29 2021300100002 INSTITUTE (2BLGMOL) 2021300100003 REFERENCE (J,NP/A,97,657,1967) Sm-147, Sm-149, Gd-157, Ta-181, 2021300100004 Re-185, Ir-191, Ir-193. 2021300100005 (S,ANL-6797,363,1963) Sm-147, Sm-149, Gd-157, Ir-193 2021300100006 (C,65ANTWERP,1,533(94),1965) Sm-147, Sm-149, Gd-157, 2021300100007 Ir-191, Ir-193, Re-185. abstract. 2021300100008 (R,EANDC-50-S,(1),(94),1965) Paper 94, idem, data. 2021300100009 (J,NP,82,331,196607) Sm-149, spin determination with 2021300100010 n-alpha reaction. Evidence for negative 2021300100011 energy resonance with spin = 3. 2021300100012 AUTHOR (F.Poortmans, H.Ceulemans) 2021300100013 TITLE Parameters of slow neutron resonances in Sm, Gd, Ta, 2021300100014 Re, and Ir isotopes 2021300100015 FACILITY (REAC,2BLGMOL) BR2-reactor, crystal spectrometer. 2021300100016 DETECTOR (BF3) BF-3 proportional counter. 2021300100017 METHOD (FNB) Be or Cu monochromator used 2021300100018 MONITOR (82-PB-0(N,EL)82-PB-0,,SIG) = 11.28 +- 0.06 barn, 2021300100019 for neutron energies above 0.5 eV (see REL-REF). 2021300100020 (23-V-0(N,EL)23-V-0,,SIG) = 4.87 +- 0.05 barn, 2021300100021 for neutron energies below 0.5 eV (see REL-REF).. 2021300100022 * Total cross section at resonance of Ir-191 and 2021300100023 Ir-193 measured by transmission. 2021300100024 MONIT-REF (11026030,L.A.Rayburn+,J,NP,61,381,1965) - Pb(n,el) 2021300100025 (20369003,H.Ceulemans+,C,70HELSINKI,1,461,1970) 2021300100026 COMMENT .BIB-section fortified by private communication. 2021300100027 HISTORY (19721005C) 2021300100028 (20170425U) SD:Updated to new date formats,lower case. 2021300100029 Syntax in ref. corrected. STATUS moved in 2021300100030 Subents 002-019. Small corrections in all Subents. 2021300100031 ENDBIB 29 0 2021300100032 NOCOMMON 0 0 2021300100033 ENDSUBENT 32 0 2021300199999 SUBENT 20213002 20170425 22612021300200001 BIB 10 24 2021300200002 REACTION ((62-SM-147(N,EL),,WID)/ 2021300200003 (62-SM-147(N,TOT),,WID)) 2021300200004 INC-SPECT .Monochromatic beam obtained from Bragg-reflections on 2021300200005 Be(121) planes for the 3.4 eV resonance and on Be(222)2021300200006 planes for the 18.3 eV resonance. 2021300200007 SAMPLE .Natural samarium metal, thickness 2021300200008 (4.6+-0.1)*1.e-4 atoms/b, 3.4 eV resonance. 2021300200009 (9.2+-0.2)*1.E-5 atoms/b, 18 eV resonance. 2021300200010 .Scattering sample at right angle to neutron beam 2021300200011 (diameter 2 cm), surrounded by BF(3) counters (length 2021300200012 50 cm). 2021300200013 METHOD .Measured total cross-section and scattering 2021300200014 cross-section with identical experimental conditions. 2021300200015 ANALYSIS .Deduced ratio of neutron width to total width = 2021300200016 (elastic scattering cross-section - potential scatt.)/2021300200017 (total cross-section) at resonance. 2021300200018 COMMENT .Net counting rate obtained from difference between 2021300200019 sample in and sample out counting rates. 2021300200020 CORRECTION .Corrections for self-screening and absorption of 2021300200021 scattered neutrons in the sample. 2021300200022 ERR-ANALYS (ERR-S) Statistical error derived from observed 2021300200023 variance of a series of measurements. 2021300200024 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021300200025 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021300200026 ENDBIB 24 0 2021300200027 NOCOMMON 0 0 2021300200028 DATA 3 2 2021300200029 EN-RES DATA ERR-S 2021300200030 EV NO-DIM NO-DIM 2021300200031 3.4 0.0156 0.0016 2021300200032 18.3 0.52 0.04 2021300200033 ENDDATA 4 0 2021300200034 ENDSUBENT 33 0 2021300299999 SUBENT 20213003 20170425 22612021300300001 BIB 9 26 2021300300002 REACTION (62-SM-147(N,0),,J) 2021300300003 INC-SPECT .Monochromatic beam obtained from Bragg-reflections on 2021300300004 Be(121) planes for the 3.4 eV resonance and on Be(222)2021300300005 planes for the 18.3 eV resonance. 2021300300006 SAMPLE .Natural samarium metal, thickness 2021300300007 (4.6+-0.1)*1.e-4 atoms/b, 3.4 eV resonance. 2021300300008 (9.2+-0.2)*1.E-5 atoms/b, 18 eV resonance. 2021300300009 .Scattering sample at right angle to neutron beam 2021300300010 (diameter 2 cm), surrounded by BF(3) counters (length 2021300300011 50 cm). 2021300300012 METHOD .Measured total cross-section and scattering 2021300300013 cross-section with identical experimental conditions. 2021300300014 ANALYSIS .Deduced ratio of neutron width to total width = 2021300300015 (elastic scattering cross-section - potential scatt.)/2021300300016 (Total cross-section) at resonance. 2021300300017 .The statistical weight factor G and So the resonance 2021300300018 spin are obtained from the determined ratio of 2021300300019 neutron width to total width and from the parameters 2021300300020 (weight factor)*(neutron width) and total width 2021300300021 taken from BNL-325, 1-st Suppl. 2021300300022 COMMENT .Net counting rate obtained from difference between 2021300300023 sample in and sample out counting rates. 2021300300024 CORRECTION .Corrections for self-screening and absorption of 2021300300025 scattered neutrons in the sample. 2021300300026 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021300300027 HISTORY (20170425A) SD: ERR-ANALYS deleted. 2021300300028 ENDBIB 26 0 2021300300029 NOCOMMON 0 0 2021300300030 DATA 2 2 2021300300031 EN-RES DATA 2021300300032 EV NO-DIM 2021300300033 3.4 3. 2021300300034 18.3 4. 2021300300035 ENDDATA 4 0 2021300300036 ENDSUBENT 35 0 2021300399999 SUBENT 20213004 20170425 22612021300400001 BIB 10 28 2021300400002 REACTION ((62-SM-149(N,EL),,WID)/ 2021300400003 (62-SM-149(N,TOT),,WID)) 2021300400004 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021300400005 Cu(111) planes for the 0.0976 eV resonance and on the 2021300400006 Be(101) planes for the 0.87 eV resonance, resolution 2021300400007 (FWHM) = 0.002 eV at 0.1 eV, = 0.045 eV at 1 eV. 2021300400008 SAMPLE .Natural samarium metal, thickness 2021300400009 2.72*1.E-5 atoms/b for 0.0976 eV resonance. 2021300400010 5.20*1.E-5 atoms/b for 0.87 eV resonance. 2021300400011 .Scattering sample at right angle to neutron beam 2021300400012 (diameter 2 cm), surrounded by BF(3) counters (length 2021300400013 50 cm). 2021300400014 METHOD .Measured total cross-section and scattering 2021300400015 cross-section with identical experimental conditions. 2021300400016 ANALYSIS .Deduced ratio of neutron width to total width = 2021300400017 (elastic scattering cross-section - potential scatt.)/2021300400018 (Total cross-section) at resonance. 2021300400019 COMMENT .Net counting rate obtained from difference between 2021300400020 sample in and sample out counting rates. 2021300400021 CORRECTION .Corrections for self-screening and absorption of 2021300400022 scattered neutrons in the sample. 2021300400023 ERR-ANALYS (ERR-S) Statistical error derived from observed 2021300400024 variance of a series of measurements. 2021300400025 STATUS (TABLE) The ratio of n-width to total width of the 2021300400026 Sm-149 0.0976 eV resonance based on a recent 2021300400027 V(n,n)-standard received by private communication. 2021300400028 .BIB-section fortified by private communication. 2021300400029 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021300400030 ENDBIB 28 0 2021300400031 NOCOMMON 0 0 2021300400032 DATA 3 2 2021300400033 EN-RES DATA ERR-S 2021300400034 EV NO-DIM NO-DIM 2021300400035 0.0976 0.008 0.0003 2021300400036 0.87 0.0108 0.0008 2021300400037 ENDDATA 4 0 2021300400038 ENDSUBENT 37 0 2021300499999 SUBENT 20213005 20170425 22612021300500001 BIB 10 28 2021300500002 REACTION (62-SM-149(N,0),,J) 2021300500003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021300500004 Cu(111) planes for the 0.0976 eV resonance and on the 2021300500005 Be(101) planes for the 0.87 eV resonance, resolution 2021300500006 (FWHM) = 0.002 eV at 0.1 eV, = 0.045 eV at 1 eV. 2021300500007 SAMPLE .Natural samarium metal, thickness 2021300500008 2.72*1.E-5 atoms/b for 0.0976 eV resonance. 2021300500009 5.20*1.E-5 atoms/b for 0.87 eV resonance. 2021300500010 .Scattering sample at right angle to neutron beam 2021300500011 (diameter 2 cm), surrounded by BF(3) counters (length 2021300500012 50 cm). 2021300500013 METHOD .Measured total cross-section and scattering 2021300500014 cross-section with identical experimental conditions. 2021300500015 ANALYSIS .Deduced ratio of neutron width to total width = 2021300500016 (elastic scattering cross-section - potential scatt.)/2021300500017 (Total cross-section) at resonance. 2021300500018 .The statistical weight factor G and So the resonance 2021300500019 spin are obtained from the determined ratio of 2021300500020 neutron width to total width and from the parameters 2021300500021 (weight factor)*(neutron width) and total width 2021300500022 taken from Phys. Rev. 109, 1219(1958). 2021300500023 COMMENT .Net counting rate obtained from difference between 2021300500024 sample in and sample out counting rates. 2021300500025 CORRECTION .Corrections for self-screening and absorption of 2021300500026 scattered neutrons in the sample. 2021300500027 REL-REF (R,11766002,H.Marshak+,J,PR,109,1219,1958) 2021300500028 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021300500029 HISTORY (20170425A) SD: ERR-ANALYS deleted. REL-REF added. 2021300500030 ENDBIB 28 0 2021300500031 NOCOMMON 0 0 2021300500032 DATA 2 2 2021300500033 EN-RES DATA 2021300500034 EV NO-DIM 2021300500035 0.0976 4. 2021300500036 0.87 4. 2021300500037 ENDDATA 4 0 2021300500038 ENDSUBENT 37 0 2021300599999 SUBENT 20213006 20170425 22612021300600001 BIB 10 22 2021300600002 REACTION ((64-GD-157(N,EL),,WID)/ 2021300600003 (64-GD-157(N,TOT),,WID)) 2021300600004 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021300600005 Be(222). 2021300600006 SAMPLE .Natural gadolinium metal, 2021300600007 thickness (3.24+-0.03)*1.E-4 atoms/b. 2021300600008 .Scattering sample at right angle to neutron beam 2021300600009 (diameter 2 cm), surrounded by BF(3) counters (length 2021300600010 50 cm). 2021300600011 METHOD .Measured total cross-section and scattering 2021300600012 cross-section with identical experimental conditions. 2021300600013 ANALYSIS .Deduced ratio of neutron width to total width = 2021300600014 (elastic scattering cross-section - potential scatt.)/2021300600015 (Total cross-section) at resonance. 2021300600016 COMMENT .Net counting rate obtained from difference between 2021300600017 sample in and sample out counting rates. 2021300600018 CORRECTION .Corrections for sel-fscreening and absorption of 2021300600019 scattered neutrons in the sample. 2021300600020 ERR-ANALYS (ERR-S) Statistical error derived from observed 2021300600021 variance of a series of measurements. 2021300600022 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021300600023 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021300600024 ENDBIB 22 0 2021300600025 NOCOMMON 0 0 2021300600026 DATA 3 1 2021300600027 EN-RES DATA ERR-S 2021300600028 EV NO-DIM NO-DIM 2021300600029 17.1 0.13 0.025 2021300600030 ENDDATA 3 0 2021300600031 ENDSUBENT 30 0 2021300699999 SUBENT 20213007 20170425 22612021300700001 BIB 10 25 2021300700002 REACTION (64-GD-157(N,0),,J) 2021300700003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021300700004 Be(222). 2021300700005 SAMPLE .Natural gadolinium metal 2021300700006 thickness (3.24+-0.03)*1.E-4 atoms/b. 2021300700007 .Scattering sample at right angle to neutron beam 2021300700008 (diameter 2 cm), surrounded by BF(3) counters (length 2021300700009 50 cm). 2021300700010 METHOD .Measured total cross-section and scattering 2021300700011 cross-section with identical experimental conditions. 2021300700012 ANALYSIS .Deduced ratio of neutron width to total width = 2021300700013 (elastic scattering cross-section - potential scatt.)/2021300700014 (Total cross-section) at resonance. 2021300700015 .The statistical weight factor G and So the resonance 2021300700016 spin are obtained from the determined ratio of 2021300700017 neutron width to total width and from the parameters 2021300700018 (weight factor)*(neutron width) and total width 2021300700019 taken from BNL-325, 1-st suppl. 2021300700020 COMMENT .Net counting rate obtained from difference between 2021300700021 sample in and sample out counting rates. 2021300700022 CORRECTION .Corrections for self-screening and absorption of 2021300700023 scattered neutrons in the sample. 2021300700024 REL-REF (R,,D.J.Huges+,R,BNL-325,1957) Supplement Number 1. 2021300700025 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021300700026 HISTORY (20170425A) SD: REL-REF added. 2021300700027 ENDBIB 25 0 2021300700028 NOCOMMON 0 0 2021300700029 DATA 2 1 2021300700030 EN-RES DATA 2021300700031 EV NO-DIM 2021300700032 17.1 2. 2021300700033 ENDDATA 3 0 2021300700034 ENDSUBENT 33 0 2021300799999 SUBENT 20213008 20170425 22612021300800001 BIB 10 22 2021300800002 REACTION ((73-TA-181(N,EL),,WID)/ 2021300800003 (73-TA-181(N,TOT),,WID)) 2021300800004 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021300800005 Be(222). 2021300800006 SAMPLE .Natural tantalum metal, 2021300800007 thickness (1.03+-0.01)*1.E-3 atoms/b. 2021300800008 .Scattering sample at right angle to neutron beam 2021300800009 (diameter 2 cm), surrounded by BF(3) counters (length 2021300800010 50 cm). 2021300800011 METHOD .Measured total cross-section and scattering 2021300800012 cross-section with identical experimental conditions. 2021300800013 ANALYSIS .Deduced ratio of neutron width to total width = 2021300800014 (elastic scattering cross-section - potential scatt.)/2021300800015 (Total cross-section) at resonance. 2021300800016 COMMENT .Net counting rate obtained from difference between 2021300800017 sample in and sample out counting rates. 2021300800018 CORRECTION .Corrections for self-screening and absorption of 2021300800019 scattered neutrons in the sample. 2021300800020 ERR-ANALYS (ERR-S) Statistical error derived from observed 2021300800021 variance of a series of measurements. 2021300800022 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021300800023 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021300800024 ENDBIB 22 0 2021300800025 NOCOMMON 0 0 2021300800026 DATA 3 1 2021300800027 EN-RES DATA ERR-S 2021300800028 EV NO-DIM NO-DIM 2021300800029 24.1 0.11 0.014 2021300800030 ENDDATA 3 0 2021300800031 ENDSUBENT 30 0 2021300899999 SUBENT 20213009 20170425 22612021300900001 BIB 10 28 2021300900002 REACTION (73-TA-181(N,0),,J) 2021300900003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021300900004 Be(222). 2021300900005 SAMPLE .Natural tantalum metal, 2021300900006 thickness (1.03+-0.01)*1.E-3 atoms/b. 2021300900007 .Scattering sample at right angle to neutron beam 2021300900008 (diameter 2 cm), surrounded by bf(3) counters (length 2021300900009 50 cm). 2021300900010 METHOD .Measured total cross-section and scattering 2021300900011 cross-section with identical experimental conditions. 2021300900012 ANALYSIS .Deduced ratio of neutron width to total width = 2021300900013 (elastic scattering cross-section - potential scatt.)/2021300900014 (Total cross-section) at resonance. 2021300900015 .The statistical weight factor G and So the resonance 2021300900016 spin are obtained from the determined ratio of 2021300900017 neutron width to total width and from the parameters 2021300900018 (weight factor)*(neutron width) and total width 2021300900019 taken from Phys. Rev. 120, 2214 (1960) 2021300900020 COMMENT .Net counting rate obtained from difference between 2021300900021 sample in and sample out counting rates. 2021300900022 CORRECTION .Corrections for self-screening and absorption of 2021300900023 scattered neutrons in the sample. 2021300900024 REL-REF (R,12178005,H.H.London,J,PR,100,1414,1955) 2021300900025 (R,,D.J.Huges+,R,BNL-325,1957) Supplement Number 1. 2021300900026 (R,11922008,H.H.Bolotin+,J,NP,42,676,1963) 2021300900027 (R,11948008,J.S.Desjardins+,J,PR,120,2214,1960) 2021300900028 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021300900029 HISTORY (20170425A) SD: ERR-ANALYS deleted. REL-REF added. 2021300900030 ENDBIB 28 0 2021300900031 NOCOMMON 0 0 2021300900032 DATA 2 1 2021300900033 EN-RES DATA 2021300900034 EV NO-DIM 2021300900035 24.1 3. 2021300900036 ENDDATA 3 0 2021300900037 ENDSUBENT 36 0 2021300999999 SUBENT 20213010 20170425 22612021301000001 BIB 9 24 2021301000002 REACTION ((75-RE-185(N,EL),,WID)/ 2021301000003 (75-RE-185(N,TOT),,WID)) 2021301000004 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301000005 Be(121) planes. 2021301000006 SAMPLE .Natural rhenium metal, 2021301000007 thickness (2.21+-0.03)*1.E-4 atoms/b. 2021301000008 .Scattering sample at right angle to neutron beam 2021301000009 (diameter 2 cm), surrounded by BF(3) counters (length 2021301000010 50 cm). 2021301000011 METHOD .Measured total cross-section and scattering 2021301000012 cross-section with identical experimental 2021301000013 conditions. 2021301000014 ANALYSIS .The ratio of neutron width to total width is obtained 2021301000015 from the experimental ratios elastic scattering 2021301000016 cross-section to total cross-section at different 2021301000017 energies (resonance energy +- small energies). 2021301000018 .a nonresonant scattering cross-section = 10+-2.5 barns2021301000019 has been taken into account. 2021301000020 CORRECTION .Corrections for self-screening and absorption of 2021301000021 scattered neutrons in the sample. 2021301000022 ERR-ANALYS (ERR-S) Statistical error derived from observed 2021301000023 variance of a series of measurements. 2021301000024 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021301000025 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021301000026 ENDBIB 24 0 2021301000027 NOCOMMON 0 0 2021301000028 DATA 3 1 2021301000029 EN-RES DATA ERR-S 2021301000030 EV NO-DIM NO-DIM 2021301000031 2.156 0.046 0.004 2021301000032 ENDDATA 3 0 2021301000033 ENDSUBENT 32 0 2021301099999 SUBENT 20213011 20170425 22612021301100001 BIB 9 26 2021301100002 REACTION (75-RE-185(N,0),,J) 2021301100003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301100004 Be(121) planes. 2021301100005 SAMPLE .Natural rhenium metal, 2021301100006 thickness (2.21+-0.03)*1.E-4 atoms/b. 2021301100007 .Scattering sample at right angle to neutron beam 2021301100008 (diameter 2 cm), surrounded by BF(3) counters (length 2021301100009 50 cm). 2021301100010 METHOD .Measured total cross-section and scattering 2021301100011 cross-section with identical experimental 2021301100012 conditions. 2021301100013 ANALYSIS .The ratio of neutron width to total width is obtained 2021301100014 from the experimental ratios elastic scattering 2021301100015 cross-section to total cross-section at different 2021301100016 energies (resonance energy +- small energies). 2021301100017 .a nonresonant scattering cross-section = 10+-2.5 barns2021301100018 has been taken into account. 2021301100019 .The statistical weight factor G and So the resonance 2021301100020 spin are obtained from the determined ratio of 2021301100021 neutron width to total width and from the parameters 2021301100022 given in Phys. Rev. 100, 1338 (1955). 2021301100023 REL-REF (R,12178005,H.H.London,J,PR,100,1414,1955) 2021301100024 CORRECTION .Corrections for self-screening and absorption of 2021301100025 scattered neutrons in the sample. 2021301100026 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021301100027 HISTORY (20170425A) SD: ERR-ANALYS deleted. REL-REF added. 2021301100028 ENDBIB 26 0 2021301100029 NOCOMMON 0 0 2021301100030 DATA 2 1 2021301100031 EN-RES DATA 2021301100032 EV NO-DIM 2021301100033 2.156 3. 2021301100034 ENDDATA 3 0 2021301100035 ENDSUBENT 34 0 2021301199999 SUBENT 20213012 20170425 22612021301200001 BIB 9 24 2021301200002 REACTION ((77-IR-191(N,EL),,WID)/ 2021301200003 (77-IR-191(N,TOT),,WID)) 2021301200004 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301200005 Be(101) planes for 0.654 eV neutrons, 2021301200006 Be(121) planes for 5.36 eV neutrons, 2021301200007 Be(222) planes for 9.07 eV neutrons. 2021301200008 SAMPLE .Natural metal, 2021301200009 thickness = (4.31+-0.03)*1.E-4 atoms/b. 2021301200010 .Scattering sample at right angle to neutron beam 2021301200011 (diameter 2 cm), surrounded by BF(3) counters (length 2021301200012 50 cm). 2021301200013 METHOD .Measured total cross-section and scattering 2021301200014 cross-section with identical experimental 2021301200015 conditions. 2021301200016 ANALYSIS .The ratio of neutron width to total width is obtained 2021301200017 from the experimental ratios elastic scattering 2021301200018 cross-section to total cross-section at different 2021301200019 energies (resonance energy +- small energies). 2021301200020 CORRECTION .Corrections for self-screening and absorption of 2021301200021 scattered neutrons in the sample. 2021301200022 ERR-ANALYS (ERR-S) Statistical error derived from observed 2021301200023 variance of a series of measurements. 2021301200024 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021301200025 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021301200026 ENDBIB 24 0 2021301200027 NOCOMMON 0 0 2021301200028 DATA 3 3 2021301200029 EN-RES DATA ERR-S 2021301200030 EV NO-DIM NO-DIM 2021301200031 0.654 0.0062 0.0009 2021301200032 5.36 0.05 0.006 2021301200033 9.07 0.039 0.007 2021301200034 ENDDATA 5 0 2021301200035 ENDSUBENT 34 0 2021301299999 SUBENT 20213013 20170425 22612021301300001 BIB 10 23 2021301300002 REACTION (77-IR-191(N,TOT),,WID) 2021301300003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301300004 Be(101) planes for 0.654 eV neutrons. 2021301300005 SAMPLE .Natural, laminated metal, 2021301300006 thickness = (4.29 +- 0.02)*1.E-4 atoms/b. 2021301300007 .Distance sample and detector 3 meter 2021301300008 METHOD .Transmission measurement with steps of 0.005 eV. 2021301300009 ANALYSIS .The experimental width was determined graphically. 2021301300010 COMMENT .This measurements confirm the result of Landon, 2021301300011 Phys. Rev. 100, 1414(1955). His analysis was done 2021301300012 more precisely. 2021301300013 CORRECTION .For higher order contribution of neutron beam=.8%. 2021301300014 .No correction for resolution broadening applied, 2021301300015 resolution(FWHM) = 0.012 eV. 2021301300016 .Experimental width (FWHM) and peak total cross-section2021301300017 are corrected for Doppler broadening. 2021301300018 ERR-ANALYS (ERR-S,,1.) Statistical error derived from observed 2021301300019 variance of a series of measurements. 2021301300020 A precision of the order of half an energy 2021301300021 channel (=2milli-eV) was reached. 2021301300022 STATUS (TABLE) Table 3 of Nucl.Phys.A97(1967)657 2021301300023 HISTORY (20170425A) SD: DATA-ERR -> ERR-S as it is given in the2021301300024 text of the article. 2021301300025 ENDBIB 23 0 2021301300026 NOCOMMON 0 0 2021301300027 DATA 2 1 2021301300028 EN-RES DATA 2021301300029 EV MILLI-EV 2021301300030 0.654 73. 2021301300031 ENDDATA 3 0 2021301300032 ENDSUBENT 31 0 2021301399999 SUBENT 20213014 20170425 22612021301400001 BIB 10 20 2021301400002 REACTION (77-IR-191(N,TOT),,SIG,,RES) 2021301400003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301400004 Be(101) planes for 0.654 eV neutrons. 2021301400005 SAMPLE .Natural, laminated metal, 2021301400006 thickness = (4.29 +- 0.02)*1.E4 atoms/b. 2021301400007 .Distance sample and detector 3 meter 2021301400008 METHOD .Transmission measurement with steps of 0.005 eV. 2021301400009 ANALYSIS .The peak cross-section was determined graphically. 2021301400010 COMMENT .This measurements confirm the result of Landon, 2021301400011 Phys. Rev. 100, 1414(1955). His analysis was done 2021301400012 more precisely. 2021301400013 CORRECTION .For higher order contribution of neutron beam=.8% 2021301400014 .No correction for resolution broadening applied, 2021301400015 resolution(FWHM) = 0.012 eV. 2021301400016 .Experimental width (FWHM) and peak total cross-section2021301400017 are corrected for Doppler broadening. 2021301400018 ERR-ANALYS (ERR-S,,1.) Statistical error derived from observed 2021301400019 variance of a series of measurements. 2021301400020 STATUS (TABLE) Tbl.3 from NP/A,97,657,1967 2021301400021 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021301400022 ENDBIB 20 0 2021301400023 NOCOMMON 0 0 2021301400024 DATA 2 1 2021301400025 EN-RES DATA 2021301400026 EV B 2021301400027 0.654 5190. 2021301400028 ENDDATA 3 0 2021301400029 ENDSUBENT 28 0 2021301499999 SUBENT 20213015 20170425 22612021301500001 BIB 10 32 2021301500002 REACTION (77-IR-191(N,0),,J) 2021301500003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301500004 Be(101) planes for 0.654 eV neutrons, 2021301500005 Be(121) planes for 5.36 eV neutrons, 2021301500006 Be(222) planes for 9.07 eV neutrons. 2021301500007 SAMPLE .Natural metal, 2021301500008 thickness = (4.31+-0.03)*1.E-4 atoms/b. 2021301500009 .Scattering sample at right angle to neutron beam 2021301500010 (diameter 2 cm), surrounded by bf(3) counters (length 2021301500011 50 cm). 2021301500012 METHOD .Measured total cross-section and scattering 2021301500013 cross-section with identical experimental 2021301500014 conditions. 2021301500015 ANALYSIS .The ratio of neutron width to total width is obtained 2021301500016 from the experimental ratios elastic scattering 2021301500017 cross-section to total cross-section at different 2021301500018 energies (resonance energy +- small energies). 2021301500019 .the statistical weight factor G and So the resonance 2021301500020 spin are obtained from the determined ratio of 2021301500021 neutron width to total width and from the parameters 2021301500022 (weight factor)*(neutron width) and total width taken 2021301500023 from Phys.Rev.100,1414(1955) For .654 eV resonance, 2021301500024 from Nucl.Phys.42,676(1965) For 5.36 eV resonance, 2021301500025 from BNL-325, 1-st suppl. For 9.07 eV resonance. 2021301500026 FLAG (1.) Tentative spin assignment. 2021301500027 CORRECTION .Corrections for self-screening and absorption of 2021301500028 scattered neutrons in the sample. 2021301500029 REL-REF (R,12178005,H.H.London,J,PR,100,1414,1955) 2021301500030 (R,,D.J.Huges+,R,BNL-325,1957) Supplement Number 1. 2021301500031 (R,11922008,H.H.Bolotin+,J,NP,42,676,1963) 2021301500032 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021301500033 HISTORY (20170425A) SD: ERR-ANALYS deleted. REL-REF added. 2021301500034 ENDBIB 32 0 2021301500035 NOCOMMON 0 0 2021301500036 DATA 3 3 2021301500037 EN-RES DATA FLAG 2021301500038 EV NO-DIM NO-DIM 2021301500039 0.654 2. 2021301500040 5.36 2. 2021301500041 9.07 2. 1. 2021301500042 ENDDATA 5 0 2021301500043 ENDSUBENT 42 0 2021301599999 SUBENT 20213016 20170425 22612021301600001 BIB 9 23 2021301600002 REACTION ((77-IR-193(N,EL),,WID)/ 2021301600003 (77-IR-193(N,TOT),,WID)) 2021301600004 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301600005 Be(101) planes for 1.303 eV neutrons, 2021301600006 Be(222) planes for 9.07 eV neutrons. 2021301600007 SAMPLE .Natural metal, 2021301600008 thickness = (4.31+-0.03)*1.E-4 atoms/b. 2021301600009 .Scattering sample at right angle to neutron beam 2021301600010 (diameter 2 cm), surrounded by BF(3) counters (length 2021301600011 50 cm). 2021301600012 METHOD .Measured total cross-section and scattering 2021301600013 cross-section with identical experimental 2021301600014 conditions. 2021301600015 ANALYSIS .The ratio of neutron width to total width is obtained 2021301600016 from the experimental ratios elastic scattering 2021301600017 cross-section to total cross-section at different 2021301600018 energies (resonance energy +- small energies). 2021301600019 CORRECTION .Corrections for self-screening and absorption of 2021301600020 scattered neutrons in the sample. 2021301600021 ERR-ANALYS (ERR-S) Statistical error derived from observed 2021301600022 variance of a series of measurements. 2021301600023 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021301600024 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021301600025 ENDBIB 23 0 2021301600026 NOCOMMON 0 0 2021301600027 DATA 3 2 2021301600028 EN-RES DATA ERR-S 2021301600029 EV NO-DIM NO-DIM 2021301600030 1.303 0.0066 0.0015 2021301600031 9.07 0.039 0.007 2021301600032 ENDDATA 4 0 2021301600033 ENDSUBENT 32 0 2021301699999 SUBENT 20213017 20170425 22612021301700001 BIB 9 21 2021301700002 REACTION (77-IR-193(N,TOT),,WID) 2021301700003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301700004 Be(101) planes for 1.303 eV neutrons. 2021301700005 SAMPLE .Natural, laminated metal, 2021301700006 thickness = (4.29 +- 0.02)*1.E-4 atoms/b. 2021301700007 .Distance sample and detector 3 meter 2021301700008 METHOD .Transmission measurement with steps of 0.01 eV. 2021301700009 ANALYSIS .The experimental width was determined graphically. 2021301700010 COMMENT .This measurements confirm the result of Landon, 2021301700011 Phys. Rev. 100, 1414(1955). His analysis was done 2021301700012 more precisely. 2021301700013 CORRECTION .For higher order contribution of neutron beam=1 perc. 2021301700014 .No correction for resolution broadening applied, 2021301700015 resolution(FWHM) = 0.036 eV. 2021301700016 .Experimental width (FWHM) and peak total cross-section2021301700017 are corrected for Doppler broadening. 2021301700018 ERR-ANALYS (ERR-S,,1.) Statistical error derived from observed 2021301700019 variance of a series of measurements. 2021301700020 A precision of the order of half an energy 2021301700021 channel (=2milli-eV) was reached. 2021301700022 STATUS (TABLE) Tbl.3 from NP/A,97,657,1967 2021301700023 ENDBIB 21 0 2021301700024 NOCOMMON 0 0 2021301700025 DATA 2 1 2021301700026 EN-RES DATA 2021301700027 EV MILLI-EV 2021301700028 1.303 91. 2021301700029 ENDDATA 3 0 2021301700030 ENDSUBENT 29 0 2021301799999 SUBENT 20213018 20170425 22612021301800001 BIB 10 20 2021301800002 REACTION (77-IR-193(N,TOT),,SIG,,RES) 2021301800003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301800004 Be(101) planes. 2021301800005 SAMPLE .Natural, laminated metal, 2021301800006 thickness = (4.29 +- 0.02)*1.E-4 atoms/b. 2021301800007 .Distance sample and detector 3 meter 2021301800008 METHOD .Transmission measurement with steps of 0.01 eV. 2021301800009 ANALYSIS .The peak cross-section was determined graphically. 2021301800010 COMMENT .This measurements confirm the result of Landon, 2021301800011 Phys. Rev. 100, 1414(1955). His analysis was done 2021301800012 more precisely. 2021301800013 CORRECTION .Higher order contribution of neutron beam = 1%. 2021301800014 .No correction for resolution broadening applied, 2021301800015 resolution(FWHM) = 0.036 eV. 2021301800016 .Experimental width (FWHM) and peak total cross-section2021301800017 are corrected for Doppler broadening. 2021301800018 ERR-ANALYS (ERR-S,,1.) Statistical error derived from observed 2021301800019 variance of a series of measurements. 2021301800020 STATUS (TABLE) Tbl.3 from NP/A,97,657,1967 2021301800021 HISTORY (20170425A) SD: DATA-ERR -> ERR-S. 2021301800022 ENDBIB 20 0 2021301800023 NOCOMMON 0 0 2021301800024 DATA 2 1 2021301800025 EN-RES DATA 2021301800026 EV B 2021301800027 1.303 6000. 2021301800028 ENDDATA 3 0 2021301800029 ENDSUBENT 28 0 2021301899999 SUBENT 20213019 20170425 22612021301900001 BIB 10 29 2021301900002 REACTION (77-IR-193(N,0),,J) 2021301900003 INC-SPECT .Monochromatic beam obtained from Bragg reflection on 2021301900004 Be(101) planes for 1.303 eV neutrons, 2021301900005 Be(222) planes for 9.07 eV neutrons. 2021301900006 SAMPLE .Natural metal, 2021301900007 thickness = (4.31+-0.03)*1.E-4 atoms/b. 2021301900008 .Scattering sample at right angle to neutron beam 2021301900009 (diam. 2 cm), surrounded by BF(3) counters (length 2021301900010 50 cm). 2021301900011 METHOD .Measured total cross-section and scattering 2021301900012 cross-section with identical experimental 2021301900013 conditions. 2021301900014 ANALYSIS .The ratio of neutron width to total width is obtained 2021301900015 from the experimental ratios elastic scattering 2021301900016 cross-section to total cross-section at different 2021301900017 energies (resonance energy +- small energies). 2021301900018 .The statistical weight factor G and So the resonance 2021301900019 spin are obtained from the determined ratio of 2021301900020 neutron width to total width and from the parameters 2021301900021 (weight factor)*(neutron width) and total width taken 2021301900022 from Phys.Rev.100,1414(1955) For 1.303 eV resonance, 2021301900023 from BNL 325, 1-st Suppl. For 9.07 eV resonance. 2021301900024 REL-REF (R,12178005,H.H.London,J,PR,100,1414,1955) 2021301900025 (R,,D.J.Huges+,R,BNL-325,1957) Supplement Number 1. 2021301900026 FLAG (1.) Tentative spin assignment. 2021301900027 CORRECTION .Corrections for self-screening and absorption of 2021301900028 scattered neutrons in the sample. 2021301900029 STATUS (TABLE) Tbl.2 from NP/A,97,657,1967 2021301900030 HISTORY (20170425A) SD: ERR-ANALYS deleted. REL-REF added. 2021301900031 ENDBIB 29 0 2021301900032 NOCOMMON 0 0 2021301900033 DATA 3 2 2021301900034 EN-RES DATA FLAG 2021301900035 EV NO-DIM NO-DIM 2021301900036 1.303 2. 2021301900037 9.07 2. 1. 2021301900038 ENDDATA 4 0 2021301900039 ENDSUBENT 38 0 2021301999999 ENDENTRY 19 0 2021399999999