ENTRY C2502 20200426 C195C250200000001 SUBENT C2502001 20200426 C195C250200100001 BIB 8 31 C250200100002 TITLE Helium ion-induced fission of 204Pb at 65, 41, 37 and C250200100003 25 MeV C250200100004 AUTHOR (W.K.Hensley,E.F.Neuzil) C250200100005 REFERENCE (J,JIN,32,1761,1970) C250200100006 #doi:10.1016/0022-1902(70)80580-2 C250200100007 #NSR: 1970HE16 C250200100008 INSTITUTE (1USABRK) C250200100009 FACILITY (CYCLO,1USABRK) Bombardments with 65 MeV helium ions C250200100010 were made in the 88 in. cyclotron at the Lawrence C250200100011 Radiation Laboratory, Berkeley, California. C250200100012 (CYCLO,1USAWAU) Bombardments at and below 41 MeV took C250200100013 place in the 60in. cyclotron at the University of C250200100014 Washington, Seattle, Washington. C250200100015 SAMPLE Enriched isotopes of 204Pb were obtained in the form ofC250200100016 Pb(NO3)2 crystals. Targets were prepared by using the C250200100017 lead nitrate crystals as received or in a few cases by C250200100018 using lead powder which was electrochemically reduced C250200100019 from an aqueous solution of the nitrate. C250200100020 The amount of lead in the prepared target usually C250200100021 ranged between 0.5 and 3.0 rag, C250200100022 (82-PB-204,ENR=0.733) The first type of samples C250200100023 (82-PB-206,ENR=0.1203) C250200100024 (82-PB-207,ENR=0.059) C250200100025 (82-PB-208,ENR=0.0877) C250200100026 (82-PB-204,ENR=0.8924) The second type of samples C250200100027 (82-PB-206,ENR=0.0494) C250200100028 (82-PB-207,ENR=0.0234) C250200100029 (82-PB-208,ENR=0.0348) C250200100030 METHOD (CHSEP) The fission fragments were separated and C250200100031 purified by the standard radiochemical techniques. C250200100032 HISTORY (20200424C) OG. C250200100033 ENDBIB 31 0 C250200100034 NOCOMMON 0 0 C250200100035 ENDSUBENT 34 0 C250200199999 SUBENT C2502002 20200426 C195C250200200001 BIB 4 7 C250200200002 REACTION (82-PB-204(A,F)ELEM/MASS,(CUM),SIG) C250200200003 ERR-ANALYS (DATA-ERR) No information on source of uncertainty. C250200200004 In the text: These values have a probable error C250200200005 of +-20% or less unless otherwise noted. C250200200006 FLAG (2.) The second value presented by authors without C250200200007 explanation C250200200008 STATUS (TABLE) Tab.2 (p.1763) in Inorg.Nucl.Chem.32,1761,1970.C250200200009 ENDBIB 7 0 C250200200010 NOCOMMON 0 0 C250200200011 DATA 7 38 C250200200012 EN ELEMENT MASS DATA DATA-ERR DATA-ERR C250200200013 FLAG C250200200014 MEV NO-DIM NO-DIM MICRO-B MICRO-B PER-CENT C250200200015 NO-DIM C250200200016 25.3 38. 92. 0.24 0.15 C250200200017 C250200200018 25.3 38. 92. 0.31 0.15 C250200200019 2. C250200200020 25.3 39. 93. 1.0 20. C250200200021 C250200200022 25.3 40. 97. 1.1 20. C250200200023 C250200200024 25.3 42. 99. 0.34 0.15 C250200200025 C250200200026 25.3 46. 109. 0.082 0.015 C250200200027 C250200200028 25.3 46. 112. 0.030 0.015 C250200200029 C250200200030 25.3 47. 111. 0.075 0.015 C250200200031 C250200200032 25.3 47. 111. 0.055 0.015 C250200200033 2. C250200200034 36.7 38. 92. 1.33 20. C250200200035 C250200200036 36.7 38. 92. 3.31 20. C250200200037 2. C250200200038 36.7 39. 93. 7.21 20. C250200200039 C250200200040 36.7 40. 97. 16.2 20. C250200200041 C250200200042 36.7 42. 99. 7.1 0.3 C250200200043 C250200200044 36.7 46. 109. 15.4 20. C250200200045 C250200200046 36.7 46. 112. 3.22 20. C250200200047 C250200200048 36.7 47. 111. 9.05 20. C250200200049 C250200200050 36.7 47. 111. 2.48 20. C250200200051 2. C250200200052 41.1 32. 77. 11.6 20. C250200200053 C250200200054 41.1 38. 92. 45.1 20. C250200200055 C250200200056 41.1 38. 92. 31.8 20. C250200200057 2. C250200200058 41.1 39. 93. 61.1 1.0 C250200200059 C250200200060 41.1 40. 97. 87.0 20. C250200200061 C250200200062 41.1 42. 99. 92.0 5. C250200200063 C250200200064 41.1 44. 105. 17.4 20. C250200200065 C250200200066 41.1 46. 109. 113. 20. C250200200067 C250200200068 41.1 46. 112. 44.6 20. C250200200069 C250200200070 41.1 47. 111. 65.0 20. C250200200071 C250200200072 41.1 47. 111. 47.5 20. C250200200073 2. C250200200074 65. 38. 92. 1.05 20. C250200200075 C250200200076 65. 38. 92. 1.45 20. C250200200077 2. C250200200078 65. 39. 93. 2.05 20. C250200200079 C250200200080 65. 40. 97. 0.815 20. C250200200081 C250200200082 65. 42. 99. 2.18 20. C250200200083 C250200200084 65. 46. 109. 2.10 20. C250200200085 C250200200086 65. 46. 112. 0.696 20. C250200200087 C250200200088 65. 47. 111. 2.99 20. C250200200089 C250200200090 65. 47. 111. 0.210 20. C250200200091 2. C250200200092 ENDDATA 80 0 C250200200093 ENDSUBENT 92 0 C250200299999 SUBENT C2502003 20200426 C195C250200300001 BIB 4 6 C250200300002 REACTION (82-PB-204(A,F),,SIG,,,DERIV) C250200300003 ANALYSIS The total fission cross section was determined from theC250200300004 resolved mass distribution curves. C250200300005 ERR-ANALYS No information on uncertainty. C250200300006 STATUS (TABLE) Tab.3 (p.1766) in Inorg.Nucl.Chem.32,1761,1970.C250200300007 (DEP,C2502002) C250200300008 ENDBIB 6 0 C250200300009 NOCOMMON 0 0 C250200300010 DATA 2 4 C250200300011 EN DATA C250200300012 MEV MICRO-B C250200300013 25.3 18. C250200300014 36.7 320. C250200300015 41.1 1824. C250200300016 65. 47000. C250200300017 ENDDATA 6 0 C250200300018 ENDSUBENT 17 0 C250200399999 ENDENTRY 3 0 C250299999999