ENTRY 30296 20010417 00003029600000001 SUBENT 30296001 20010417 00003029600100001 BIB 16 50 3029600100002 INSTITUTE (3INDBOS) 3029600100003 REFERENCE (J,BOS,40,(3),81,1977) Partly revised data 3029600100004 (J,IJP,44,204,197003) Data except V,Mn, Cu(n2n) 3029600100005 (C,74CALCUT,57,197412) Short, data except Mn, Cu(n,2n) 3029600100006 AUTHOR (MANJUSHREE MAJUMDER, B.MITRA) 3029600100007 TITLE Capture cross section of 14 MeV neutrons. 3029600100008 FACILITY (CCW) Cockcroft-Walton accelerator, H.T. was stabilized3029600100009 and voltage variation was within +-0.1 % over 150KV 3029600100010 INC-SOURCE (D-T) Deuteron-tritium, 3029600100011 to minimize scattering material nearby, liquid coolant 3029600100012 in the target was dispensed with and forced air cooling3029600100013 was used. And no extra backing was used for the thin 3029600100014 copper disc of the Ti-T target foil. 3029600100015 INC-SPECT Neutron energy of 14.8 +- 0.08 MeV and the flux was 3029600100016 constant to a deviation of +- 5 %. 3029600100017 SAMPLE Except iodine, samples were oxide or carbonate powder. 3029600100018 Sample holders made from pressed graphite, were in the 3029600100019 form of a circular pot of diam. 2.5cm, in which samples3029600100020 were pressed to form tablets of max. thickness of 2 mm.3029600100021 METHOD (ACTIV) Activation. 3029600100022 .Reference for the cited half-life is not given. 3029600100023 (Compiler) 3029600100024 DETECTOR End window G-M counter of 2.4 mg/cm2 window thickness. 3029600100025 .Heavily biased plastic scintillator detector monitored3029600100026 neutron flux 3029600100027 PART-DET (B-) Decay beta-. 3029600100028 CORRECTION Correction for thick-sample beta-counting, including 3029600100029 self-absorption and self-scattering in the sample. 3029600100030 ===Compiler's Note=== 3029600100031 No correction for the influence of lower 3029600100032 energy neutrons (from scattering inside the sample 3029600100033 and accelerator target) on the cross section is 3029600100034 mentioned. This effect could possibly account for 3029600100035 the discrepancy e.g. in the I-127 cross section 3029600100036 (this work 2.74 mb, several other authors about 1.1 3029600100037 mb). See e.g. Phys.Lett.39B,1972,625, Nuovo Cim.Lett.3029600100038 10,1974,1, Nucl.Phys.A264,1976,105. (1978/02/24) 3029600100039 ERR-ANALYS Statistical error only is given. But 3029600100040 systematic error in detail was discussed in text. 3029600100041 COMMENT Data obtained are very much larger than those predicted3029600100042 by the compound nucleus theory. 3029600100043 STATUS Data from Trans. Bose Res. Inst. 40, 81, 1977 3029600100044 HISTORY (19750628C) KO 3029600100045 (19760513U) KO. -Cosmetic change in subentry .004.- 3029600100046 (19780224A) OS. Subentry .007 added, subentry .001 3029600100047 accordingly updated, compiler's note added. 3029600100048 (19900129A) VOF.-Obsolete key-words updated.reference 3029600100049 added. 3029600100050 (20010417A) Subentries 8,9 added, num.values in 3029600100051 subentries 2,5,6,7 updated, BIB updates. OS 3029600100052 ENDBIB 50 0 3029600100053 NOCOMMON 0 0 3029600100054 ENDSUBENT 53 0 3029600199999 SUBENT 30296002 20010417 00003029600200001 BIB 5 7 3029600200002 REACTION (31-GA-71(N,G)31-GA-72,,SIG) 3029600200003 SAMPLE Specpure Ga(2)-O(3), white powder. 3029600200004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3029600200005 Al in the form of specpure foil, 10 mg/cm2 thickness. 3029600200006 HALF-LIFE (HL,31-GA-72) 3029600200007 HISTORY (20010417A) Value revised from 1.29 to 1.31 mb 3029600200008 according to Trans.Bose Res.Inst.40,81,1977 3029600200009 ENDBIB 7 0 3029600200010 NOCOMMON 0 0 3029600200011 DATA 7 1 3029600200012 EN EN-RSL HL DATA DATA-ERR MONIT 3029600200013 MONIT-ERR 3029600200014 MEV MEV HR MB PER-CENT MB 3029600200015 MB 3029600200016 14.8 0.08 14.3 1.31 15. 116. 3029600200017 8. 3029600200018 ENDDATA 6 0 3029600200019 ENDSUBENT 18 0 3029600299999 SUBENT 30296003 20010417 00003029600300001 BIB 5 6 3029600300002 REACTION (33-AS-75(N,G)33-AS-76,,SIG) 3029600300003 SAMPLE Specpure As(2)-O(3) of 99.5 percent purity. 3029600300004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3029600300005 Al in the form of specpure foil, 10 mg/cm2 thickness. 3029600300006 HALF-LIFE (HL,33-AS-76) 3029600300007 HISTORY (20010417U) Changed to lower case 3029600300008 ENDBIB 6 0 3029600300009 NOCOMMON 0 0 3029600300010 DATA 7 1 3029600300011 EN EN-RSL HL DATA DATA-ERR MONIT 3029600300012 MONIT-ERR 3029600300013 MEV MEV HR MB PER-CENT MB 3029600300014 MB 3029600300015 14.8 0.08 26.5 1.39 12. 116. 3029600300016 8. 3029600300017 ENDDATA 6 0 3029600300018 ENDSUBENT 17 0 3029600399999 SUBENT 30296004 20010417 00003029600400001 BIB 6 14 3029600400002 REACTION (53-I-127(N,G)53-I-128,,SIG) 3029600400003 SAMPLE Iodine metal flakes, pasted in the form of cakes. 3029600400004 .During counting, the sample in a weighed perspex pot 3029600400005 was housed in the ice-box in order to avoid the loss 3029600400006 by sublimation or not to deposit itself on the counter 3029600400007 window. 3029600400008 MONITOR (29-CU-63(N,2N)29-CU-62,,SIG) .Mitra and Ghosh, 3029600400009 Nucl.Phys.,83(1966)157.(Evaluated value) 3029600400010 HALF-LIFE (HL,53-I-128) 3029600400011 COMMENT From the decay curve, a new activity of 2.6 hr was 3029600400012 recognized. This was due to the meta-stable state 3029600400013 of I-126 as (n,2n) product. Table of Isotopes,(1967), 3029600400014 refer only 13 days half-life as ground state. 3029600400015 HISTORY (20010417U) Changed to lower case 3029600400016 ENDBIB 14 0 3029600400017 NOCOMMON 0 0 3029600400018 DATA 7 1 3029600400019 EN EN-RSL HL DATA DATA-ERR MONIT 3029600400020 MONIT-ERR 3029600400021 MEV MEV HR MB PER-CENT MB 3029600400022 MB 3029600400023 14.8 0.08 24.9 2.74 7. 530. 3029600400024 25. 3029600400025 ENDDATA 6 0 3029600400026 ENDSUBENT 25 0 3029600499999 SUBENT 30296005 20010417 00003029600500001 BIB 5 7 3029600500002 REACTION (56-BA-138(N,G)56-BA-139,,SIG) 3029600500003 SAMPLE Ba-CO(3). 3029600500004 MONITOR (29-CU-63(N,2N)29-CU-62,,SIG) .Mitra and Ghosh, 3029600500005 Nucl.Phys.,83(1966)157.(Evaluated value) 3029600500006 HALF-LIFE (HL,56-BA-139) 3029600500007 HISTORY (20010417A) Value revised from 1.12 to 1.72 mb 3029600500008 according to Trans.Bose Res.Inst.40,81,1977 3029600500009 ENDBIB 7 0 3029600500010 NOCOMMON 0 0 3029600500011 DATA 7 1 3029600500012 EN EN-RSL HL DATA DATA-ERR MONIT 3029600500013 MONIT-ERR 3029600500014 MEV MEV MIN MB PER-CENT MB 3029600500015 MB 3029600500016 14.8 0.08 84. 1.72 20. 530. 3029600500017 25. 3029600500018 ENDDATA 6 0 3029600500019 ENDSUBENT 18 0 3029600599999 SUBENT 30296006 20010417 00003029600600001 BIB 5 8 3029600600002 REACTION (59-PR-141(N,G)59-PR-142,,SIG) 3029600600003 SAMPLE Specpure Pr(2)-O(3) black oxide powder. 3029600600004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3029600600005 Al in the form of specpure foil, 10 mg/cm2 thickness. 3029600600006 HALF-LIFE (HL,59-PR-142-G) 3029600600007 HISTORY (19900129A) VOF.-Reaction corrected. 3029600600008 (20010417A) Value revised from 2.19 to 3.09 mb 3029600600009 according to Trans.Bose Res.Inst.40,81,1977 3029600600010 ENDBIB 8 0 3029600600011 NOCOMMON 0 0 3029600600012 DATA 7 1 3029600600013 EN EN-RSL HL DATA DATA-ERR MONIT 3029600600014 MONIT-ERR 3029600600015 MEV MEV HR MB PER-CENT MB 3029600600016 MB 3029600600017 14.8 0.08 19.2 3.09 14. 116. 3029600600018 8. 3029600600019 ENDDATA 6 0 3029600600020 ENDSUBENT 19 0 3029600699999 SUBENT 30296007 20010417 00003029600700001 BIB 3 4 3029600700002 REACTION (23-V-51(N,G)23-V-52,,SIG) 3029600700003 MONITOR (29-CU-63(N,2N)29-CU-62,,SIG) 3029600700004 HISTORY (20010417A) Value revised from 0.49 to 0.07 mb 3029600700005 according to Trans.Bose Res.Inst.40,81,1977 3029600700006 ENDBIB 4 0 3029600700007 NOCOMMON 0 0 3029600700008 DATA 4 1 3029600700009 EN MONIT DATA DATA-ERR 3029600700010 MEV MB MB PER-CENT 3029600700011 14.8 530. 0.07 10. 3029600700012 ENDDATA 3 0 3029600700013 ENDSUBENT 12 0 3029600799999 SUBENT 30296008 20010417 00003029600800001 BIB 3 3 3029600800002 REACTION (25-MN-55(N,G)25-MN-56,,SIG) 3029600800003 MONITOR (29-CU-63(N,2N)29-CU-62,,SIG) 3029600800004 HISTORY (20010417C) OS. 3029600800005 ENDBIB 3 0 3029600800006 NOCOMMON 0 0 3029600800007 DATA 4 1 3029600800008 EN MONIT DATA DATA-ERR 3029600800009 MEV MB MB PER-CENT 3029600800010 14.8 530. 3.06 10. 3029600800011 ENDDATA 3 0 3029600800012 ENDSUBENT 11 0 3029600899999 SUBENT 30296009 20010417 00003029600900001 BIB 4 4 3029600900002 REACTION (29-CU-63(N,2N)29-CU-62,,SIG) 3029600900003 MONITOR Abolute determination 3029600900004 STATUS Data from Trans.Bose Res.Inst.40,81,1977, p.85 3029600900005 HISTORY (20010417C) Moved from entry 78012 3029600900006 ENDBIB 4 0 3029600900007 NOCOMMON 0 0 3029600900008 DATA 4 1 3029600900009 EN EN-ERR DATA DATA-ERR 3029600900010 MEV MEV MB PER-CENT 3029600900011 14.8 0.01 530. 10. 3029600900012 ENDDATA 3 0 3029600900013 ENDSUBENT 12 0 3029600999999 ENDENTRY 9 0 3029699999999