ENTRY 30221 20081203 31323022100000001 SUBENT 30221001 20081203 31323022100100001 BIB 13 19 3022100100002 INSTITUTE (3CHLSAN) 3022100100003 REFERENCE (J,NP,24,340,196104) 3022100100004 AUTHOR (J.J.Van Loef) 3022100100005 TITLE Activation cross sections for (n,p) reactions in some 3022100100006 medium weight nuclei with d+d neutrons. 3022100100007 FACILITY (CCW) 800-keV cascade generator 3022100100008 INC-SOURCE (D-D) H-2(d,n)He-3 reaction 3022100100009 SAMPLE Natural isotopic composition 3022100100010 METHOD (ACTIV) Activation 3022100100011 DETECTOR (NAICR) NaI(Tl) scintillation spectrometer 3022100100012 (LONGC) Long counter for monitoring 3022100100013 COMMENT The neutron energy spread is due to target thickness 3022100100014 and angular spread. 3022100100015 STATUS (TABLE) Data from Table 2 of NP 24,340 (1961) 3022100100016 HISTORY (19721206C) compiled PW 3022100100017 (20080211A) BIB section updated 3022100100018 ERR-ANALYS (DATA-ERR) Standard deviations are relative, including 3022100100019 all uncertainties, except the normalization to the 3022100100020 cross sections used as standards. 3022100100021 ENDBIB 19 0 3022100100022 NOCOMMON 0 0 3022100100023 ENDSUBENT 22 0 3022100199999 SUBENT 30221002 20081203 31323022100200001 BIB 6 8 3022100200002 REACTION (28-NI-58(N,P)27-CO-58,,SIG) 3022100200003 MONITOR (28-NI-58(N,P)27-CO-58,,SIG) 3022100200004 MONIT-REF (30220002,Rapaport+,J,PR,114,565,195904) 3022100200005 PART-DET (DG) 810 keV gamma ray, 99 % branching 3022100200006 COMMENT Simultaneous irradiation of samples placed at various 3022100200007 positions around the target in order to obtain 3022100200008 neutron energies of 3.3 and 3.6 MeV. 3022100200009 HISTORY (20080430S) Dataset was restored. 3022100200010 ENDBIB 8 0 3022100200011 COMMON 3 3 3022100200012 EN-NRM MONIT MONIT-ERR 3022100200013 MEV MB MB 3022100200014 3.55 195. 30. 3022100200015 ENDCOMMON 3 0 3022100200016 DATA 4 1 3022100200017 EN EN-ERR DATA DATA-ERR 3022100200018 MEV MEV MB MB 3022100200019 3.3 0.1 170. 20. 3022100200020 ENDDATA 3 0 3022100200021 ENDSUBENT 20 0 3022100299999 SUBENT 30221003 20081203 31323022100300001 BIB 7 14 3022100300002 REACTION (28-NI-61(N,P)27-CO-61,,SIG) 3022100300003 MONITOR (28-NI-58(N,P)27-CO-58,,SIG) 3022100300004 MONIT-REF (30220002,Rapaport+,J,PR,114,565,195904) 3022100300005 PART-DET (DG) 71 keV gamma ray, branching 100 % 3022100300006 measured activity compared with the Co-58 activity 3022100300007 present in the same sample. 3022100300008 CORRECTION For isotopic abundance, growth factor, counting 3022100300009 efficiency, gamma ray self-absorption and for the x-ray3022100300010 escape peak yields a ratio of (n,p) cross sections 3022100300011 in Ni-58 and Ni-61 of about 60 to 1 . 3022100300012 ERR-ANALYS The major source of error in the Co-51 activity came 3022100300013 from the determination of the gamma ray self absorption3022100300014 factor in nickel. 3022100300015 HISTORY (20080430S) Dataset was restored. 3022100300016 ENDBIB 14 0 3022100300017 COMMON 3 3 3022100300018 EN-NRM MONIT MONIT-ERR 3022100300019 MEV MB MB 3022100300020 3.55 195. 30. 3022100300021 ENDCOMMON 3 0 3022100300022 DATA 4 1 3022100300023 EN EN-ERR DATA DATA-ERR 3022100300024 MEV MEV MB MB 3022100300025 3.3 0.2 3. 1.5 3022100300026 ENDDATA 3 0 3022100300027 ENDSUBENT 26 0 3022100399999 SUBENT 30221004 20081203 31323022100400001 BIB 5 8 3022100400002 REACTION (30-ZN-64(N,P)29-CU-64,,SIG) 3022100400003 MONITOR (30-ZN-64(N,P)29-CU-64,,SIG) 3022100400004 PART-DET (B+) annihilation quants of beta-decay, 3022100400005 19 % branching assumed 3022100400006 COMMENT Simultaneous irradiation of samples placed at various 3022100400007 positions around the target in order to obtain 3022100400008 neutron energies of 3.3 and 3.6 MeV. 3022100400009 HISTORY (20080430S) Dataset was restored. 3022100400010 ENDBIB 8 0 3022100400011 COMMON 3 3 3022100400012 EN-NRM MONIT MONIT-ERR 3022100400013 MEV MB MB 3022100400014 3.55 56.5 9. 3022100400015 ENDCOMMON 3 0 3022100400016 DATA 4 1 3022100400017 EN EN-ERR DATA DATA-ERR 3022100400018 MEV MEV MB MB 3022100400019 3.3 0.1 51.5 5.0 3022100400020 ENDDATA 3 0 3022100400021 ENDSUBENT 20 0 3022100499999 SUBENT 30221005 20081203 31323022100500001 BIB 5 14 3022100500002 REACTION (30-ZN-67(N,P)29-CU-67,,SIG) 3022100500003 ANALYSIS 184 keV gamma masked by the backscattering peak at 3022100500004 175 keV due to the annihilation radiation of Cu-64 3022100500005 with 12.8 Hours half-life. Both from the decay constant3022100500006 of the broad maximum at 175 keV and the shape of the 3022100500007 pulse-height distribution measured at different time 3022100500008 intervals after the end of the irradiation, an estimate3022100500009 was made of the Cu-67 activity. From this result, an 3022100500010 upper limit of 10 % was assigned to the ratio of 3022100500011 cross sections of (n,p) reactions in Zn-67 and Zn-64, 3022100500012 respectively. 3022100500013 MONITOR (30-ZN-64(N,P)29-CU-64,,SIG) 3022100500014 PART-DET (DG) 184 keV gamma, 43 % branching 3022100500015 HISTORY (20080430S) Dataset was restored. 3022100500016 ENDBIB 14 0 3022100500017 COMMON 3 3 3022100500018 EN-NRM MONIT MONIT-ERR 3022100500019 MEV MB MB 3022100500020 3.55 56.5 9. 3022100500021 ENDCOMMON 3 0 3022100500022 DATA 3 1 3022100500023 EN EN-ERR DATA-MAX 3022100500024 MEV MEV MB 3022100500025 3.3 0.2 5. 3022100500026 ENDDATA 3 0 3022100500027 ENDSUBENT 26 0 3022100599999 SUBENT 30221006 20081203 31323022100600001 BIB 7 21 3022100600002 REACTION (26-FE-54(N,P)25-MN-54,,SIG) 3022100600003 ANALYSIS As the 840 keV gamma ray from the Mn-54 decay 3022100600004 has about the same energy as the 810 keV gamma ray 3022100600005 in Co-58 decay, a comparison was made between the 3022100600006 induced radioactivities in iron and nickel. 3022100600007 From the intensity ratio of the photopeaks of the Mn-543022100600008 and Co-58 gamma rays of about 1 to 50, the ratio of 3022100600009 integrated neutron flux, the difference in number of 3022100600010 target nuclei and growth factor, the cross sections 3022100600011 of (n,p) reactions in Fe-54 and Ni-58 were found to Be 3022100600012 the same within 10 %. 3022100600013 MONITOR (28-NI-58(N,P)27-CO-58,,SIG) 3022100600014 MONIT-REF (30220002,Rapaport+,J,PR,114,565,195904) 3022100600015 PART-DET (DG) 840 keV gamma, branching 100 % 3022100600016 COMMENT A gamma ray of 845 keV with a decay time of 2.6 hours 3022100600017 was attributed to Mn-56 from neutron capture by 3022100600018 manganese, which in a small quantity was present. Thus 3022100600019 the measurement of the Mn-54 activity was started two 3022100600020 days after the end of the irradiation so that Mn-56 3022100600021 had decayed completely. 3022100600022 HISTORY (20080430S) Dataset was restored. 3022100600023 ENDBIB 21 0 3022100600024 COMMON 3 3 3022100600025 EN-NRM MONIT MONIT-ERR 3022100600026 MEV MB MB 3022100600027 3.55 195. 30. 3022100600028 ENDCOMMON 3 0 3022100600029 DATA 4 3 3022100600030 EN EN-ERR DATA DATA-ERR 3022100600031 MEV MEV MB MB 3022100600032 2.6 0.2 150. 20. 3022100600033 3.3 0.1 190. 20. 3022100600034 3.6 0.1 210. 15. 3022100600035 ENDDATA 5 0 3022100600036 ENDSUBENT 35 0 3022100699999 ENDENTRY 6 0 3022199999999