ENTRY 21906 20161102 22552190600000001 SUBENT 21906001 20161102 22552190600100001 BIB 17 84 2190600100002 INSTITUTE (1USALRL) 2190600100003 (2GERKFK) 2190600100004 REFERENCE (J,AJ,286,810,1984) 2190600100005 ((P,NEANDC(E)-242U,7,198306)= 2190600100006 (P,INDC(GER)-25/L,7,1983)) 2190600100007 Prelim. MACS for Nd-142,143,144 AT kT=30keV in Table .2190600100008 AUTHOR (G.J.Mathews,F.Kaeppeler) 2190600100009 TITLE Neutron-capture nucleosynthesis of neodymium isotopes 2190600100010 and the s-process from A=130 to 150. 2190600100011 REL-REF (I,21808001,J.Almeida,R,KFK-3347,1982) 2190600100012 (M,21808001,J.Almeida+,J,AJ,265,417,1983) 2190600100013 (M,21831001,F.Kaeppeler+,J,NSE,84,234,1983) 2190600100014 Details of measurement 2190600100015 FACILITY (VDG,2GERKFK) Pulsed 3.75 MV Van de Graaff 2190600100016 INC-SOURCE (P-LI7) Pulsed proton beam. 2190600100017 Proton energies,keV 2025 1950 1925 2190600100018 Neutron spectrum,keV 4-250 4-160 4-125 2190600100019 Repetition rate,MHz 0.5 0.5 1.0 2190600100020 Beam intensity,microA 4 4 7.5 2190600100021 Pulse width ~700 ps 2190600100022 Flight path 0.60.7+-0.2 m 2190600100023 Total time resolution about 1.2 nano-sec. 2190600100024 Neutron energy resolution 300eV at 30keV 2190600100025 Metallic Li target ~2mg/cm2 on 0.3 mm tantalum 2190600100026 backing water cooled . 2190600100027 INC-SPECT The neutron flux was determined by integration of the 2190600100028 neutron monitor spectrum for each sample separately. 2190600100029 SAMPLE Nd(2)O(3), isotopically separated. 2190600100030 All samples of 25mm diameter. 2190600100031 - Au-197 metal, natural, 4460.0 mg, in plastic bag of 2190600100032 36.1 mg mass, 0.48 mm thickness, 2.805 nucl./mb ; 2190600100033 Au sample was used for normalization. 2190600100034 - Carbon as graphite, natural, 817.1 mg, in plastic 2190600100035 bag of 39.3 mg, 0.97 mm thickness, 8.355 nucl/mb; 2190600100036 carbon samples was used to measure the background due 2190600100037 to secondary scattering in the sample. 2190600100038 DETECTOR (SCIN) Two cylindrical C6D6 detectors, each containing 2190600100039 1 liter of NE230 - to detect the capture gamma-rays. 2190600100040 Located 2.5cm from the center of the sample at 90 deg 2190600100041 to the beam direction. 2190600100042 (GLASD) Li-6 glass detector to monitor neutron beam. 2190600100043 METHOD (TOF) 2190600100044 (PHD) 2190600100045 Pulse height and time-of-flight for both detectors 2190600100046 were stored in 16 x 1024-channel data arrays. 2190600100047 (COINC) Coincidence between two detectors - to 2190600100048 eliminate the uncertainty due to pileup. 2190600100049 Cyclic measurements during 4 weeks : 2190600100050 Run I Run II Run III Ru2190600100051 Number of cycles 54 92 126 512190600100052 Measuring time per sample,hr 11 13 22 7 2190600100053 Repetition rate, MHz 0.5 0.5 0.5 1.2190600100054 Neutron spectrum,keV 4-250 4-250 4-160 4-2190600100055 Nd samples : 2190600100056 Run I - 144Nd, 143Nd(1), 142Nd 2190600100057 Run II - 144Nd, 143Nd(1), 142Nd 2190600100058 Run III - 144Nd, 143Nd(2), 142Nd 2190600100059 Run IV - 144Nd, 143Nd(2), 142Nd 2190600100060 Au sample, carbon sample, empty polyethylene bag were 2190600100061 used in all runs. 2190600100062 ANALYSIS One-dimensional TOF spectra were obtained by applying 2190600100063 the weighting function determined by Hensley to the 2190600100064 pulse-height spectra of the C6D6 scintillators. 2190600100065 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2190600100066 Normalization to Au ENDF/B-V cross section smoothed 2190600100067 with roughly the same energy resolution as the data. 2190600100068 MONIT-REF (,,3,ENDF/B-V,,1979) 2190600100069 CORRECTION For backgrounds. 2190600100070 For isotopic impurities 2190600100071 For pile-up events. 2190600100072 For neutron multiple scattering and self-shielding. 2190600100073 For gamma-ray attenuation. 2190600100074 ADD-RES Recommended values of MACS are given in Table 6 of 2190600100075 J,AJ,286,810,1984 : 2190600100076 ND-142 - 49.+-4. mb, ND-143 - 259.+-11. mb, 2190600100077 ND-144 - 119.+-6. mb, ND-145 - 512.+-112. mb, 2190600100078 ND-146 - 128.+-20. mb, ND-148 - 208.+-25. mb, 2190600100079 ND-150 - 240.+-150. mb . 2190600100080 HISTORY (19840703C)BL 2190600100081 (19840710E) 2190600100082 (20161102A) M.M. Ref. J,AJ,286,810,1984 was added. 2190600100083 BIB information was updated. 2190600100084 Upper -> lower case correction. 2190600100085 Dates were corrected for 4-digits year. 2190600100086 ENDBIB 84 0 2190600100087 NOCOMMON 0 0 2190600100088 ENDSUBENT 87 0 2190600199999 SUBENT 21906002 20161102 22552190600200001 BIB 6 35 2190600200002 REACTION 1(60-ND-142(N,G)60-ND-143,,SIG,,MXW) 2190600200003 2(60-ND-142(N,G)60-ND-143,,SIG,,MXW) 2190600200004 SAMPLE 5326.1 mg mass, in plastic bag of 40.4 mg, 2190600200005 thickness 2.39 mm, 3.935 nucl./mb . 2190600200006 Isotopic composition (%) : 2190600200007 Nd-142 - 97.55, Nd-143 - 1.20, Nd-144 - 0.88, 2190600200008 Nd-145 - 0.17, Nd-146 - 0.23, Nd-148 -0.05, 2190600200009 Nd-150 - 0.04. 2190600200010 Other rare earths < 0.562%, 2190600200011 all other elements <1.17% . 2190600200012 ANALYSIS 1 MACS were derived from the measured at 30-keV point 2190600200013 capture cross section SIG(30keV) as: 2190600200014 SIG(30keV*(2/sqrt(PI)*G*(2-b), where 2190600200015 G - gamma function, 2190600200016 b = 0.664+-0.036, derive assuming 2190600200017 SIG(E)=SIG(30keV)* (E/30)**-b . 2190600200018 2 Cross section averaged only over the measured energy 2190600200019 interval 6-200 keV. 2190600200020 ERR-ANALYS (ERR-T) Total uncertainty 8 %. 2190600200021 Sources of uncertainty: 2190600200022 (ERR-1) Background subtraction ( including effect of 2190600200023 hydrogenation) 2190600200024 (ERR-2) Isotopic impurities 2190600200025 (ERR-3) Pile-up events 2190600200026 (ERR-4) Weighting method 2190600200027 (ERR-5) Neutron multiple scattering and self-shielding 2190600200028 (ERR-6) Gamma-ray attenuation 2190600200029 (ERR-7) Normalization to Au cross section 2190600200030 STATUS (TABLE) Table 5 of J,AJ,286,810,1984. 2190600200031 In P,NEANDC(E)-242U,7,1983 - 62.5+-5.3 mb. 2190600200032 (DEP,21906005) Directly measured capture cross section 2190600200033 HISTORY (19840703C) 2190600200034 (19840710E) 2190600200035 (20161102A) M.M . Data values corrected as given in 2190600200036 newer publication 2190600200037 ENDBIB 35 0 2190600200038 COMMON 8 6 2190600200039 ERR-T ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 2190600200040 ERR-6 ERR-7 2190600200041 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2190600200042 PER-CENT PER-CENT 2190600200043 8.0 7.1 1.0 1.0 2.0 1.0 2190600200044 1.0 2.5 2190600200045 ENDCOMMON 6 0 2190600200046 DATA 5 1 2190600200047 KT DATA 1ERR-T 1DATA 2ERR-T 2 2190600200048 KEV MB MB MB MB 2190600200049 30. 49. 4. 51. 4. 2190600200050 ENDDATA 3 0 2190600200051 ENDSUBENT 50 0 2190600299999 SUBENT 21906003 20161102 22552190600300001 BIB 6 37 2190600300002 REACTION 1(60-ND-143(N,G)60-ND-144,,SIG,,MXW) 2190600300003 2(60-ND-143(N,G)60-ND-144,,SIG,,MXW) 2190600300004 SAMPLE - 3823.1 mg mass, in plastic bag of 40.0 mg, 2190600300005 thickness 1.45 mm, 2.807 nucl./mb 2190600300006 - 4298.4 mg mass, in plastic bag of 59.0 mg, 2190600300007 thickness 1.69 mm, 3.156 nucl./mb 2190600300008 Isotopic composition (%) : 2190600300009 Nd-142 - 2.41, Nd-143 - 91.06, Nd-144 - 4.43, 2190600300010 Nd-145 - 0.39, Nd-146 - 1.50, Nd-148 -0.14, 2190600300011 Nd-150 - 0.09. 2190600300012 Other rare earths < 0.562%, 2190600300013 all other elements <1.17% . 2190600300014 ANALYSIS 1 MACS were derived from the measured at 30-keV point 2190600300015 capture cross section SIG(30keV) as: 2190600300016 SIG(30keV*(2/sqrt(PI)*G*(2-b), where 2190600300017 G - gamma function, 2190600300018 b = 0.675+-0.009, derive assuming 2190600300019 SIG(E)=SIG(30keV)* (E/30)**-b . 2190600300020 2 Cross section averaged only over the measured energy 2190600300021 interval 6-200 keV. 2190600300022 ERR-ANALYS (ERR-T) Total uncertainty 4.4% . 2190600300023 Sources of uncertainty: 2190600300024 (ERR-1) Background subtraction ( including effect of 2190600300025 hydrogenation) 2190600300026 (ERR-2) Isotopic impurities 2190600300027 (ERR-3) Pile-up events 2190600300028 (ERR-4) Weighting method 2190600300029 (ERR-5) Neutron multiple scattering and self-shielding 2190600300030 (ERR-6) Gamma-ray attenuation 2190600300031 (ERR-7) Normalization to Au cross section 2190600300032 STATUS (TABLE) Table 5 of J,AJ,286,810,1984. 2190600300033 In P,NEANDC(E)-242U,7,1983 - 298.+-29. mb. 2190600300034 (DEP,21906006) Directly measured capture cross section 2190600300035 HISTORY (19840703C) 2190600300036 (19840710E) 2190600300037 (20161102A) M.M . Data values corrected as given in 2190600300038 newer publication 2190600300039 ENDBIB 37 0 2190600300040 COMMON 8 6 2190600300041 ERR-T ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 2190600300042 ERR-6 ERR-7 2190600300043 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2190600300044 PER-CENT PER-CENT 2190600300045 4.4 1.5 0.4 2.0 2.0 1.0 2190600300046 1.0 2.5 2190600300047 ENDCOMMON 6 0 2190600300048 DATA 5 1 2190600300049 KT DATA 1ERR-T 1DATA 2ERR-T 2 2190600300050 KEV MB MB MB MB 2190600300051 30. 259. 11. 258. 11. 2190600300052 ENDDATA 3 0 2190600300053 ENDSUBENT 52 0 2190600399999 SUBENT 21906004 20161102 22552190600400001 BIB 6 35 2190600400002 REACTION 1(60-ND-144(N,G)60-ND-145,,SIG,,MXW) 2190600400003 2(60-ND-144(N,G)60-ND-145,,SIG,,MXW) 2190600400004 SAMPLE - 5323.3 mg mass, in plastic bag of 58.4 mg, 2190600400005 thickness 2.35 mm, 3.888 nucl./mb 2190600400006 Isotopic composition (%) : 2190600400007 Nd-142 - 0.46, Nd-143 - 0.66, Nd-144 - 97.51, 2190600400008 Nd-145 - 0.85, Nd-146 - 0.39, Nd-148 -0.08, 2190600400009 Nd-150 - 0.05. 2190600400010 Other rare earths < 0.562%, 2190600400011 all other elements <1.17% . 2190600400012 ANALYSIS 1 MACS were derived from the measured at 30-keV point 2190600400013 capture cross section SIG(30keV) as: 2190600400014 SIG(30keV*(2/sqrt(PI)*G*(2-b), where 2190600400015 G - gamma function, 2190600400016 b = 0.694+-0.019, derive assuming 2190600400017 SIG(E)=SIG(30keV)* (E/30)**-b . 2190600400018 2 Cross section averaged only over the measured energy 2190600400019 interval 6-200 keV. 2190600400020 ERR-ANALYS (ERR-T) Total uncertainty 4.8% . 2190600400021 Sources of uncertainty: 2190600400022 (ERR-1) Background subtraction ( including effect of 2190600400023 hydrogenation) 2190600400024 (ERR-2) Isotopic impurities 2190600400025 (ERR-3) Pile-up events 2190600400026 (ERR-4) Weighting method 2190600400027 (ERR-5) Neutron multiple scattering and self-shielding 2190600400028 (ERR-6) Gamma-ray attenuation 2190600400029 (ERR-7) Normalization to Au cross section 2190600400030 STATUS (TABLE) Table 5 of J,AJ,286,810,1984. 2190600400031 In P,NEANDC(E)-242U,7,1983 - 154.+-7. mb. 2190600400032 (DEP,21906007) Directly measured capture cross section 2190600400033 HISTORY (19840703C) 2190600400034 (19840710E) 2190600400035 (20161102A) M.M . Data values corrected as given in 2190600400036 newer publication 2190600400037 ENDBIB 35 0 2190600400038 COMMON 8 6 2190600400039 ERR-T ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 2190600400040 ERR-6 ERR-7 2190600400041 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2190600400042 PER-CENT PER-CENT 2190600400043 4.8 2.9 1.2 1.0 2.0 1.0 2190600400044 1.0 2.5 2190600400045 ENDCOMMON 6 0 2190600400046 DATA 5 1 2190600400047 KT DATA 1ERR-T 1DATA 2ERR-T 2 2190600400048 KEV MB MB MB MB 2190600400049 30. 116. 6. 123. 6. 2190600400050 ENDDATA 3 0 2190600400051 ENDSUBENT 50 0 2190600499999 SUBENT 21906005 20161102 22552190600500001 BIB 4 13 2190600500002 REACTION (60-ND-142(N,G)60-ND-143,,SIG) 2190600500003 SAMPLE 5326.1 mg mass, in plastic bag of 40.4 mg, 2190600500004 thickness 2.39 mm, 3.935 nucl./mb . 2190600500005 Isotopic composition (%) : 2190600500006 Nd-142 - 97.55, Nd-143 - 1.20, Nd-144 - 0.88, 2190600500007 Nd-145 - 0.17, Nd-146 - 0.23, Nd-148 -0.05, 2190600500008 Nd-150 - 0.04. 2190600500009 Other rare earths < 0.562%, 2190600500010 all other elements <1.17% . 2190600500011 STATUS (UNOBT) Fig.3 of Astrophys.J.286(1984)810 2190600500012 (SPSDD,22388008) by Franz Kaeppeler (2017-01-25) via 2190600500013 Naohiko Otsuka 2190600500014 HISTORY (20161102C) M.M . Subent was added. 2190600500015 ENDBIB 13 0 2190600500016 NOCOMMON 0 0 2190600500017 NODATA 0 0 2190600500018 ENDSUBENT 17 0 2190600599999 SUBENT 21906006 20161102 22552190600600001 BIB 4 15 2190600600002 REACTION (60-ND-143(N,G)60-ND-144,,SIG) 2190600600003 SAMPLE - 3823.1 mg mass, in plastic bag of 40.0 mg, 2190600600004 thickness 1.45 mm, 2.807 nucl./mb 2190600600005 - 4298.4 mg mass, in plastic bag of 59.0 mg, 2190600600006 thickness 1.69 mm, 3.156 nucl./mb 2190600600007 Isotopic composition (%) : 2190600600008 Nd-142 - 2.41, Nd-143 - 91.06, Nd-144 - 4.43, 2190600600009 Nd-145 - 0.39, Nd-146 - 1.50, Nd-148 -0.14, 2190600600010 Nd-150 - 0.09. 2190600600011 Other rare earths < 0.562%, 2190600600012 all other elements <1.17% . 2190600600013 STATUS (UNOBT) Fig.3 of Astrophys.J.286(1984)810 2190600600014 (SPSDD,22388009) by Franz Kaeppeler (2017-01-25) via 2190600600015 Naohiko Otsuka 2190600600016 HISTORY (20161102C) M.M. Subent was added. 2190600600017 ENDBIB 15 0 2190600600018 NOCOMMON 0 0 2190600600019 NODATA 0 0 2190600600020 ENDSUBENT 19 0 2190600699999 SUBENT 21906007 20161102 22552190600700001 BIB 4 13 2190600700002 REACTION (60-ND-144(N,G)60-ND-145,,SIG) 2190600700003 SAMPLE - 5323.3 mg mass, in plastic bag of 58.4 mg, 2190600700004 thickness 2.35 mm, 3.888 nucl./mb 2190600700005 Isotopic composition (%) : 2190600700006 Nd-142 - 0.46, Nd-143 - 0.66, Nd-144 - 97.51, 2190600700007 Nd-145 - 0.85, Nd-146 - 0.39, Nd-148 -0.08, 2190600700008 Nd-150 - 0.05. 2190600700009 Other rare earths < 0.562%, 2190600700010 all other elements <1.17% . 2190600700011 STATUS (UNOBT) Fig.3 of Astrophys.J.286(1984)810 2190600700012 (SPSDD,22388010) by Franz Kaeppeler (2017-01-25) via 2190600700013 Naohiko Otsuka 2190600700014 HISTORY (20161102C) M.M. Subent was added. 2190600700015 ENDBIB 13 0 2190600700016 NOCOMMON 0 0 2190600700017 NODATA 0 0 2190600700018 ENDSUBENT 17 0 2190600799999 ENDENTRY 7 0 2190699999999