ENTRY 20452 20180821 22702045200000001 SUBENT 20452001 20180821 22702045200100001 BIB 15 69 2045200100002 INSTITUTE (2UK ALD) 2045200100003 REFERENCE (R,AWRE-O-41/71,1971) 2045200100004 AUTHOR (R.E.Coles) 2045200100005 TITLE (n,n+gamma) reactions in natural chromium 2045200100006 FACILITY (VDG,2UK ALD) AWRE 6 MV Van de Graaff accelerator. 2045200100007 INC-SOURCE (P-T) T(p,n)-reaction, using a 2.5 cm long gas cell 2045200100008 target with a 3.5 mg/cm2 Mo entrance foil filled 2045200100009 to 760 torr. 2045200100010 INC-SPECT (EN-RSL) The energy spread of neutrons at the scatterer2045200100011 was approximately 70 keV at 0.55 MeV, 50 keV at 2045200100012 1.0 MeV and 40 keV at 3.85 MeV, largely due to proton 2045200100013 energy loss, in the gas cell. 2045200100014 METHOD (TOF) Time of flight. Ring geometry. 2045200100015 Two series of measurement have been performed. 2045200100016 The excitation functions 2045200100017 of the 1434 keV gamma-rays were used to put the two 2045200100018 series on the same scale for all gamma-ray energies. 2045200100019 The gamma-ray energies are averages of values deduced 2045200100020 from 3 series I and 3 series II runs where each run 2045200100021 has been individually calibrated by reference to 2045200100022 standard impurity peaks such as the beta+ annihilation2045200100023 peak(2223.3 keV) present in all spectra. 2045200100024 Individual gamma-ray energy error is estimated 2045200100025 as +-1 keV. 2045200100026 The net count in each gamma-ray peak was found by 2045200100027 subtraction of a background estimated by averaging 2045200100028 the background levels on either side of the peak. 2045200100029 SAMPLE * In series I of experiments Cr powder in thin-walled 2045200100030 Al torus of rectangular cross-section was used. 2045200100031 The actual Cr scatterer was 14.8 cm outer diam., 2045200100032 10.5 cm inner diam., 3.5 cm long and of mass 1128 g. 2045200100033 * In series II of experiments sintered chromium ring 2045200100034 of 13.2 cm outer diam., 10.2 cm inner diam., 2045200100035 length 1.5 cm and mass 476 g. 2045200100036 Better than 99.5% purity in both cases. 2045200100037 DETECTOR (GELI) Two Ge(Li) detectors. 2045200100038 * In I series of experiments detector was of the 2045200100039 planar drifted type with ~2.5 cm3 sensitive volume. 2045200100040 * In II series of experiments detector was 2045200100041 coaxially drifted, of ~20. cm3 sensitive volume. 2045200100042 A mean relative angle of 100 deg. is taken as emission2045200100043 angle of gamma rays between 80. and 120. degr. 2045200100044 relative to the mean incident neutron direction. 2045200100045 (LONGC) Long counter for the neutron monitor at 90.degr2045200100046 PART-DET (G) Gammas. 2045200100047 CORRECTION Corrected for multiple inelastic scattering. 2045200100048 ERR-ANALYS (ERR-T) The errors quoted for cross sections are one 2045200100049 standard deviation and are a combination in quadrature 2045200100050 of the following contributions: 2045200100051 * Statistical errors 2045200100052 (ERR-1) Uncertainty due to PHA dead-time correction 2045200100053 (ERR-2) Uncertainty due to Ge(Li) counter efficiency 2045200100054 at one energy relative to another 2045200100055 (ERR-3) Uncertainty due to scatterer self-absorption 2045200100056 correction 2045200100057 (ERR-4) Uncertainty in long counter efficiency 2045200100058 (ERR-5) Uncertainty in ratio of T(p,n) differential 2045200100059 cross sections at 10. and 90. degr. 2045200100060 COMMENT From authors: Since no absolute cross section 2045200100061 measurements were available from the neutron 2045200100062 time-af-flight spectrometer in this laboratory with 2045200100063 which to compare our results we present only relative 2045200100064 excitation cross sections, at a mean scattering angle 2045200100065 of 100. degr. 2045200100066 HISTORY (19711011C) 2045200100067 (20180821A) SD:Updated to new date formats,lower case. 2045200100068 DETECTOR, ERR-ANALYS were updated. COS -> ANG in common2045200100069 Part of information from COMMENT moved to METHOD. 2045200100070 Major corrections in all Subents. Subent 008 was added.2045200100071 ENDBIB 69 0 2045200100072 COMMON 6 3 2045200100073 ANG ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 2045200100074 ADEG PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2045200100075 100. 1. 5. 3. 2. 3. 2045200100076 ENDCOMMON 3 0 2045200100077 ENDSUBENT 76 0 2045200199999 SUBENT 20452002 20180821 22702045200200001 BIB 4 8 2045200200002 REACTION (24-CR-50(N,INL)24-CR-50,PAR,DA,G,REL) 2045200200003 Relative values (see COMMENT in Subent 001). 2045200200004 COMMENT Values from series I of experiments 2045200200005 STATUS (TABLE) Table 1 on p.9 of AWRE-O-41/71,1971 2045200200006 HISTORY (20180821A) SD: MONITOR deleted. PART-DET, SAMPLE 2045200200007 moved to Subent 001. EN-RSL added. Data missed 2045200200008 in the Subent were added. E-LVL-INI -> E. 2045200200009 E-LVL-FIN -> LVL-FIN. DATA-ERR -> ERR-T. 2045200200010 ENDBIB 8 0 2045200200011 COMMON 2 3 2045200200012 E LVL-FIN 2045200200013 MEV MEV 2045200200014 0.781 0.0 2045200200015 ENDCOMMON 3 0 2045200200016 DATA 4 13 2045200200017 EN EN-RSL DATA ERR-T 2045200200018 MEV MEV ARB-UNITS ARB-UNITS 2045200200019 1.35 0.95 0.24 2045200200020 1.57 1.79 0.31 2045200200021 1.78 1.25 0.23 2045200200022 2.00 1.47 0.22 2045200200023 2.21 1.41 0.22 2045200200024 2.42 1.96 0.29 2045200200025 2.63 2.23 0.33 2045200200026 2.83 1.76 0.29 2045200200027 3.04 1.98 0.35 2045200200028 3.24 2.06 0.34 2045200200029 3.45 1.94 0.38 2045200200030 3.65 2.22 0.41 2045200200031 3.85 0.040 2.09 0.41 2045200200032 ENDDATA 15 0 2045200200033 ENDSUBENT 32 0 2045200299999 SUBENT 20452003 20180821 22702045200300001 BIB 4 7 2045200300002 REACTION (24-CR-52(N,INL)24-CR-52,PAR,DA,G,REL) 2045200300003 Relative values (see COMMENT in Subent 001). 2045200300004 COMMENT Values from series I of experiments 2045200300005 STATUS (TABLE) Table 1 on p.9 of AWRE-O-41/71,1971 2045200300006 HISTORY (20180821A) SD: MONITOR deleted. PART-DET, SAMPLE moved2045200300007 to Subent 001. E-LVL-INI -> E; E-LVL-FIN -> LVL-FIN. 2045200300008 DATA-ERR -> ERR-T. 2045200300009 ENDBIB 7 0 2045200300010 NOCOMMON 0 0 2045200300011 DATA 5 39 2045200300012 EN E DATA ERR-T LVL-FIN 2045200300013 MEV MEV ARB-UNITS ARB-UNITS MEV 2045200300014 1.57 1.434 13.9 1.1 0. 2045200300015 1.78 1.434 16.6 1.3 0. 2045200300016 2.00 1.434 20.4 1.5 0. 2045200300017 2.21 1.434 24.6 1.8 0. 2045200300018 2.42 1.434 23.7 1.7 0. 2045200300019 2.63 0.935 0.98 0.30 1.434 2045200300020 2.63 1.434 27.1 2.0 0. 2045200300021 2.83 0.935 1.75 0.37 1.434 2045200300022 2.83 1.207 1.67 0.77 1.434 2045200300023 2.83 1.434 37.7 2.7 0. 2045200300024 3.04 0.935 1.84 0.44 1.434 2045200300025 3.04 1.207 1.91 0.95 1.434 2045200300026 3.04 1.333 0.63 0.33 1.434 2045200300027 3.04 1.434 34.1 2.5 0. 2045200300028 3.04 1.531 0.82 0.30 1.434 2045200300029 3.24 0.935 2.63 0.42 1.434 2045200300030 3.24 1.207 3.27 0.95 1.434 2045200300031 3.24 1.333 0.88 0.34 1.434 2045200300032 3.24 1.434 35.1 2.5 0. 2045200300033 3.24 1.531 4.46 0.54 1.434 2045200300034 3.24 1.718 0.57 0.57 1.434 2045200300035 3.45 0.935 3.51 0.46 1.434 2045200300036 3.45 1.207 3.76 0.94 1.434 2045200300037 3.45 1.333 2.32 0.41 1.434 2045200300038 3.45 1.434 37.5 2.7 0. 2045200300039 3.45 1.531 7.64 0.70 1.434 2045200300040 3.45 1.718 6.57 0.84 1.434 2045200300041 3.65 0.935 3.45 0.55 1.434 2045200300042 3.65 1.207 4.38 1.05 1.434 2045200300043 3.65 1.333 2.98 0.47 1.434 2045200300044 3.65 1.434 42.7 3.1 0. 2045200300045 3.65 1.531 7.39 0.72 1.434 2045200300046 3.65 1.718 5.61 0.85 1.434 2045200300047 3.85 0.935 3.89 0.47 1.434 2045200300048 3.85 1.207 3.39 1.08 1.434 2045200300049 3.85 1.333 4.58 0.60 1.434 2045200300050 3.85 1.434 38.7 2.8 0. 2045200300051 3.85 1.531 6.61 0.69 1.434 2045200300052 3.85 1.718 5.70 0.88 1.434 2045200300053 ENDDATA 41 0 2045200300054 ENDSUBENT 53 0 2045200399999 SUBENT 20452004 20180821 22702045200400001 BIB 4 7 2045200400002 REACTION (24-CR-52(N,INL)24-CR-52,PAR,DA,G,REL) 2045200400003 Relative values (see COMMENT in Subent 001). 2045200400004 COMMENT Values from series II of experiments 2045200400005 STATUS (TABLE) Table 2 on p.9 of AWRE-O-41/71,1971 2045200400006 HISTORY (20180821A) SD: MONITOR deleted. PART-DET, SAMPLE moved2045200400007 to Subent 001. E-LVL-INI -> E; E-LVL-FIN -> LVL-FIN. 2045200400008 DATA-ERR -> ERR-T. 2045200400009 ENDBIB 7 0 2045200400010 NOCOMMON 0 0 2045200400011 DATA 5 16 2045200400012 EN E DATA ERR-T LVL-FIN 2045200400013 MEV MEV ARB-UNITS ARB-UNITS MEV 2045200400014 1.53 1.434 7.49 0.57 0.0 2045200400015 1.73 1.434 17.10 1.20 0.0 2045200400016 1.93 1.434 19.20 1.40 0.0 2045200400017 2.13 1.434 20.80 1.50 0.0 2045200400018 2.29 1.434 25.40 1.80 0.0 2045200400019 2.52 0.935 1.08 0.32 1.434 2045200400020 2.52 1.434 27.50 2.00 0.0 2045200400021 2.72 0.935 1.67 0.40 1.434 2045200400022 2.72 1.434 36.50 2.60 0.0 2045200400023 2.91 0.935 2.03 0.34 1.434 2045200400024 2.91 1.333 0.32 0.30 1.434 2045200400025 2.91 1.434 36.20 2.60 0.0 2045200400026 3.11 0.935 2.17 0.26 1.434 2045200400027 3.11 1.333 0.70 0.23 1.434 2045200400028 3.11 1.434 30.40 2.20 0.0 2045200400029 3.11 1.531 4.30 0.35 1.434 2045200400030 ENDDATA 18 0 2045200400031 ENDSUBENT 30 0 2045200499999 SUBENT 20452005 20180821 22702045200500001 BIB 4 7 2045200500002 REACTION (24-CR-53(N,INL)24-CR-53,PAR,DA,G,REL) 2045200500003 Relative values (see COMMENT in Subent 001). 2045200500004 COMMENT Values from series I of experiments 2045200500005 STATUS (TABLE) Table 1 on p.9 of AWRE-O-41/71,1971 2045200500006 HISTORY (20180821A) SD: MONITOR deleted. PART-DET, SAMPLE moved2045200500007 to Subent 001. EN-RSL added. E-LVL-INI -> E; 2045200500008 E-LVL-FIN -> LVL-FIN. DATA-ERR -> ERR-T. 2045200500009 ENDBIB 7 0 2045200500010 COMMON 1 3 2045200500011 LVL-FIN 2045200500012 MEV 2045200500013 0.0 2045200500014 ENDCOMMON 3 0 2045200500015 DATA 5 37 2045200500016 EN E EN-RSL DATA ERR-T 2045200500017 MEV MEV MEV ARB-UNITS ARB-UNITS 2045200500018 1.35 1.010 2.00 0.42 2045200500019 1.35 1.291 0.18 0.18 2045200500020 1.57 0.557 1.31 0.20 2045200500021 1.57 1.010 2.35 0.66 2045200500022 1.57 1.291 0.91 0.42 2045200500023 1.78 0.557 1.22 0.19 2045200500024 1.78 1.010 2.56 0.61 2045200500025 1.78 1.291 1.32 0.37 2045200500026 2.00 0.557 1.05 0.16 2045200500027 2.00 1.010 2.60 0.55 2045200500028 2.00 1.291 1.52 0.29 2045200500029 2.21 0.557 0.97 0.16 2045200500030 2.21 1.010 2.69 0.46 2045200500031 2.21 1.291 1.93 0.29 2045200500032 2.42 0.557 0.92 0.15 2045200500033 2.42 1.010 2.56 0.61 2045200500034 2.42 1.291 1.33 0.37 2045200500035 2.63 0.557 0.93 0.16 2045200500036 2.63 1.010 1.93 0.48 2045200500037 2.63 1.291 1.54 0.39 2045200500038 2.83 0.557 0.81 0.16 2045200500039 2.83 1.010 2.59 0.54 2045200500040 2.83 1.291 2.08 0.40 2045200500041 3.04 0.557 1.09 0.20 2045200500042 3.04 1.010 2.44 0.76 2045200500043 3.04 1.291 2.16 0.43 2045200500044 3.24 1.010 2.92 0.58 2045200500045 3.24 1.291 1.50 0.48 2045200500046 3.45 0.557 0.71 0.22 2045200500047 3.45 1.010 1.77 0.80 2045200500048 3.45 1.291 2.47 0.49 2045200500049 3.65 0.557 0.95 0.23 2045200500050 3.65 1.010 2.36 0.64 2045200500051 3.65 1.291 2.72 0.57 2045200500052 3.85 0.557 0.040 0.74 0.24 2045200500053 3.85 1.010 0.040 2.65 0.66 2045200500054 3.85 1.291 0.040 2.39 0.55 2045200500055 ENDDATA 39 0 2045200500056 ENDSUBENT 55 0 2045200599999 SUBENT 20452006 20180821 22702045200600001 BIB 4 7 2045200600002 REACTION (24-CR-53(N,INL)24-CR-53,PAR,DA,G,REL) 2045200600003 Relative values (see COMMENT in Subent 001). 2045200600004 COMMENT Values from series II of experiments 2045200600005 STATUS (TABLE) Table 2 on p.9 of AWRE-O-41/71,1971 2045200600006 HISTORY (20180821A) SD: MONITOR deleted. PART-DET, SAMPLE 2045200600007 moved to Subent 001. EN-RSL added. E-LVL-INI -> E; 2045200600008 E-LVL-FIN -> LVL-FIN. DATA-ERR -> ERR-T. 2045200600009 ENDBIB 7 0 2045200600010 COMMON 1 3 2045200600011 LVL-FIN 2045200600012 MEV 2045200600013 0.0 2045200600014 ENDCOMMON 3 0 2045200600015 DATA 5 33 2045200600016 EN E EN-RSL DATA ERR-T 2045200600017 MEV MEV MEV ARB-UNITS ARB-UNITS 2045200600018 0.55 0.557 0.070 -0.15 0.16 2045200600019 0.73 0.557 0.78 0.17 2045200600020 0.93 0.557 0.66 0.23 2045200600021 1.12 0.557 0.90 0.21 2045200600022 1.12 1.010 1.04 0.16 2045200600023 1.33 0.557 0.93 0.22 2045200600024 1.33 1.010 1.97 0.26 2045200600025 1.53 0.557 1.46 0.22 2045200600026 1.53 1.010 1.68 0.24 2045200600027 1.73 0.557 1.78 0.30 2045200600028 1.73 1.010 2.63 0.37 2045200600029 1.73 1.291 1.60 0.21 2045200600030 1.93 0.557 1.11 0.30 2045200600031 1.93 1.010 2.48 0.37 2045200600032 1.93 1.291 1.90 0.25 2045200600033 2.13 0.557 1.84 0.33 2045200600034 2.13 1.010 2.25 0.39 2045200600035 2.13 1.291 2.15 0.28 2045200600036 2.29 0.557 0.87 0.23 2045200600037 2.29 1.010 1.72 0.27 2045200600038 2.29 1.291 2.50 0.30 2045200600039 2.52 0.557 1.69 0.49 2045200600040 2.52 1.010 1.94 0.52 2045200600041 2.52 1.291 1.60 0.27 2045200600042 2.72 0.557 1.16 0.53 2045200600043 2.72 1.010 2.22 0.58 2045200600044 2.72 1.291 2.10 0.38 2045200600045 2.91 0.557 0.52 0.34 2045200600046 2.91 1.010 1.64 0.39 2045200600047 3.11 0.557 1.42 0.24 2045200600048 3.11 1.010 1.28 0.31 2045200600049 3.11 1.291 1.62 0.26 2045200600050 3.11 2.321 0.24 0.16 2045200600051 ENDDATA 35 0 2045200600052 ENDSUBENT 51 0 2045200699999 SUBENT 20452007 20180821 22702045200700001 BIB 4 7 2045200700002 REACTION (24-CR-54(N,INL)24-CR-54,PAR,DA,G,REL) 2045200700003 Relative values (see COMMENT in Subent 001). 2045200700004 COMMENT Data measured only in series I of experiments. 2045200700005 STATUS (TABLE) Table 1 on p.9 of AWRE-O-41/71,1971 2045200700006 HISTORY (20180821A) SD: MONITOR deleted. PART-DET, SAMPLE moved2045200700007 to Subent 001. E-LVL-INI -> E; E-LVL-FIN -> LVL-FIN. 2045200700008 DATA-ERR -> ERR-T. 2045200700009 ENDBIB 7 0 2045200700010 COMMON 2 3 2045200700011 E LVL-FIN 2045200700012 MEV MEV 2045200700013 0.835 0.0 2045200700014 ENDCOMMON 3 0 2045200700015 DATA 3 8 2045200700016 EN DATA ERR-T 2045200700017 MEV ARB-UNITS ARB-UNITS 2045200700018 1.78 0.70 0.32 2045200700019 2.00 1.49 0.33 2045200700020 2.21 1.17 0.32 2045200700021 2.42 1.61 0.34 2045200700022 3.04 1.67 0.40 2045200700023 3.24 1.42 0.43 2045200700024 3.45 1.73 0.31 2045200700025 3.65 2.06 0.54 2045200700026 ENDDATA 10 0 2045200700027 ENDSUBENT 26 0 2045200799999 SUBENT 20452008 20180821 22702045200800001 BIB 4 5 2045200800002 REACTION (24-CR-50(N,INL)24-CR-50,PAR,DA,G,REL) 2045200800003 Relative values (see COMMENT in Subent 001). 2045200800004 COMMENT Values from series II of experiments 2045200800005 STATUS (TABLE) Table 2 on p.9 of AWRE-O-41/71,1971 2045200800006 HISTORY (20180821C) SD 2045200800007 ENDBIB 5 0 2045200800008 COMMON 2 3 2045200800009 E LVL-FIN 2045200800010 MEV MEV 2045200800011 0.781 0.0 2045200800012 ENDCOMMON 3 0 2045200800013 DATA 3 12 2045200800014 EN DATA ERR-T 2045200800015 MEV ARB-UNITS ARB-UNITS 2045200800016 0.93 0.84 0.15 2045200800017 1.12 1.14 0.14 2045200800018 1.33 1.29 0.15 2045200800019 1.53 1.61 0.17 2045200800020 1.73 1.90 0.21 2045200800021 1.93 1.35 0.20 2045200800022 2.13 1.94 0.23 2045200800023 2.29 2.13 0.22 2045200800024 2.52 2.80 0.37 2045200800025 2.72 2.85 0.47 2045200800026 2.91 2.53 0.33 2045200800027 3.11 2.53 0.28 2045200800028 ENDDATA 14 0 2045200800029 ENDSUBENT 28 0 2045200899999 ENDENTRY 8 0 2045299999999