ENTRY 30418 20220216 32073041800000001 SUBENT 30418001 20220216 32073041800100001 BIB 8 31 3041800100002 TITLE Determination of fragment isotopic yields in the 3041800100003 fission of 252Cf accompanied by light charged particles3041800100004 AUTHOR (N.N.Ajitanand, R.K.Choudhury, S.S.Kapoor) 3041800100005 INSTITUTE (3INDTRM) 3041800100006 REFERENCE (J,NP/A,246,505,1975) 3041800100007 (P,BARC-768,63,1974) Data superseded 3041800100008 (P,BARC-694,63,1973) Data superseded 3041800100009 (C,73ROCH,2,477,1973) Abstract only 3041800100010 SAMPLE Three 252Cf sources-two with source strengths of about 3041800100011 10E+5 fissions/min for measuring ternary fission events3041800100012 and one weaker source with about 900 fissions/min for 3041800100013 measuring binary fission events. 3041800100014 METHOD Binary fission events were recorded by measuring 3041800100015 fission fragments in coincidence with prompt 3041800100016 gamma-rays emitted from these fragments. 3041800100017 Simultaneously ternary fission events were recorded by 3041800100018 measuring light charged particles (LCP) from fission in3041800100019 coincidence with prompt gamma-rays emitted from lcp 3041800100020 accompanied fragments. 3041800100021 The two strong sources were covered with 7 mg/cm3 thick3041800100022 aluminum foils to stop fission fragments and decay 3041800100023 alphas,so that only lcp reach the detectors. 3041800100024 DETECTOR (GELI) 30 cm3 detector for gamma-rays. 3041800100025 (SOLST) Three semiconductor detectors, one for binary 3041800100026 fission fragments, two for LCP, in coincidence mode 3041800100027 with the Ge(Li) detector. 3041800100028 HISTORY (19771012C) KO. 3041800100029 (19821207A) ML.bib-section and subent 3 revised 3041800100030 (20040311U) SD: corrected 4-dig. year and lower cases. 3041800100031 (20060314A) added one ref.: 73BANGLO,2,186,1973 3041800100032 (20220216A) VT Major revision in 002, 003 3041800100033 ENDBIB 31 0 3041800100034 NOCOMMON 0 0 3041800100035 ENDSUBENT 34 0 3041800199999 SUBENT 30418002 20220216 32073041800200001 BIB 6 20 3041800200002 REACTION (98-CF-252(0,F)ELEM/MASS,PR,SPC) 3041800200003 Total transition intensities per fission. 3041800200004 MONITOR (98-CF-252(0,F)ELEM/MASS,PR,SPC) 3041800200005 MONIT-REF (12691002,E.CHEIFETZ+,J,PR/C,4,1913,1971) 3041800200006 FLAG (1.) 2+ to 0+ ground-state transition. 3041800200007 (2.) 4+ to 2+ transition 3041800200008 (3.) 6+ to 4+ transition 3041800200009 (11.) obtained by assuming the (4+ to 2+)/(2+ to 0+) 3041800200010 intensity ratio to be the same in binary and ternary 3041800200011 fission. 3041800200012 (12.) obtained by subtracting out the (4+ to 2+) 3041800200013 intensity of 148Ce. 3041800200014 (13.) obtained by subtracting out the (4+ to 2+) 3041800200015 intensity of 100Zr and the (4+ to 2+) intensity of 3041800200016 106Mo. 3041800200017 (14.) obtained by subtracting out the (4+ to 2+) 3041800200018 intensity of 146Ba. 3041800200019 STATUS (TABLE) Table 1 of Nucl. Phys. A 2 46 (1975) 505 3041800200020 HISTORY (20040715A) SD: Reaction code and data units corrected 3041800200021 (20220216A) VT REACTION, MONITOR: PAR/IND,FY,G-> PR,SPC3041800200022 ENDBIB 20 0 3041800200023 NOCOMMON 0 0 3041800200024 DATA 7 41 3041800200025 ELEMENT MASS E DATA MONIT FLAG 3041800200026 FLAG 3041800200027 NO-DIM NO-DIM KEV PC/FIS PC/FIS NO-DIM 3041800200028 NO-DIM 3041800200029 40. 98. 1223. 0.2 0.3 1.3041800200030 3041800200031 40. 100. 352.1 1.01 1.26 2.3041800200032 11. 3041800200033 40. 100. 212.7 1.4 1.8 1.3041800200034 3041800200035 40. 102. 151.9 2.6 1.43 1.3041800200036 3041800200037 42. 102. 296.0 0.2 0.46 1.3041800200038 12. 3041800200039 42. 104. 368.7 1.8 2.49 2.3041800200040 3041800200041 42. 104. 192.3 3. 3.37 1.3041800200042 3041800200043 42. 106. 350.8 2.31 2.31 2.3041800200044 11. 3041800200045 42. 106. 171.7 3.37 3.37 1.3041800200046 3041800200047 44. 108. 242.3 0.3 1.94 1.3041800200048 3041800200049 44. 110. 240.8 2. 3.49 1.3041800200050 3041800200051 44. 112. 236.8 0.3 0.97 1.3041800200052 3041800200053 46. 112. 348.8 0.1 0.77 1.3041800200054 13. 3041800200055 46. 114. 332.9 0.5 1.48 1.3041800200056 14. 3041800200057 46. 116. 340.6 0.5 0.87 1.3041800200058 3041800200059 52. 134. 1278. 1.9 1.5 1.3041800200060 3041800200061 52. 134. 297. 1.6 1.3 2.3041800200062 3041800200063 52. 134. 115. 0.3 1.08 3.3041800200064 3041800200065 54. 136. 1313. 0.6 0.75 1.3041800200066 3041800200067 54. 138. 589.5 1.5 2.3 1.3041800200068 3041800200069 54. 138. 482. 1.1 1.63 2.3041800200070 3041800200071 54. 140. 457.9 1.6 1.29 2.3041800200072 3041800200073 54. 140. 376.8 1.9 1.5 1.3041800200074 11. 3041800200075 56. 142. 475.7 0.7 2.28 2.3041800200076 3041800200077 56. 142. 359.7 1. 2.9 1.3041800200078 3041800200079 56. 144. 199.4 3. 3.6 1.3041800200080 3041800200081 56. 146. 333. 0.9 0.69 2.3041800200082 11. 3041800200083 56. 146. 181. 1.24 1.01 1.3041800200084 3041800200085 58. 146. 258.6 0.8 1.04 1.3041800200086 3041800200087 58. 148. 386.5 1.4 1.2 3.3041800200088 3041800200089 58. 148. 295.7 1.6 1.84 2.3041800200090 11. 3041800200091 58. 148. 158.7 1.99 2.31 1.3041800200092 3041800200093 58. 150. 300.7 0.5 0.7 3.3041800200094 3041800200095 58. 150. 97.1 0.9 0.98 1.3041800200096 3041800200097 60. 150. 130.1 0.2 0.15 1.3041800200098 3041800200099 60. 152. 247.3 0.1 0.35 3.3041800200100 3041800200101 60. 152. 164.7 0.6 0.51 2.3041800200102 3041800200103 60. 152. 75.9 1. 0.6 1.3041800200104 3041800200105 60. 154. 243.7 0.3 0.24 3.3041800200106 3041800200107 60. 154. 162.4 0.5 0.39 2.3041800200108 3041800200109 60. 154. 72.8 0.5 0.4 1.3041800200110 3041800200111 ENDDATA 86 0 3041800200112 ENDSUBENT 111 0 3041800299999 SUBENT 30418003 20220216 32073041800300001 BIB 9 28 3041800300002 REACTION 1(98-CF-252(0,F)ELEM,TER,AP) 3041800300003 2(98-CF-252(0,F)ELEM,CHG/TER,FY,,MSC) 3041800300004 total element yield both for post-neutron emission 3041800300005 derived from fits to isotopic independent yield 3041800300006 distributions 3041800300007 ANALYSIS Ternary fission independent yields were calculated from3041800300008 the corresponding known binary fission yields (taken 3041800300009 from 'monit-ref') and the measured ternary/binary 3041800300010 ratios of gamma-rays (subentry 2). 3041800300011 The isotopic ternary yield distributions (i.e. with 3041800300012 z=const) obtained were fitted using gaussians. The 3041800300013 parameters derived from the fit are (for each element) 3041800300014 - the width of the distribution 3041800300015 1 - the position of the maximum, which is the most 3041800300016 probable mass 3041800300017 2 - the integral over the distribution, which is the 3041800300018 total yield of a given fission product element 3041800300019 MONITOR (98-CF-252(0,F)ELEM,CHG,FY) 3041800300020 elemental yield, given as fraction per binary fission 3041800300021 MONIT-REF (12691002,E.Cheifetz+,J,PR/C,4,1913,1971) 3041800300022 MISC-COL (MISC1) Width of the gaussian isotopic distribution 3041800300023 COMMENT 2 The yield is given as fraction per ternary fission 3041800300024 ERR-ANALYS (DATA-ERR) No information on source of uncertainties. 3041800300025 STATUS (TABLE) Table 2 of Nucl. Phys. A 246 (1975) 505 3041800300026 HISTORY (20040715A) SD. Units and values of 2nd reaction 3041800300027 modified according to publication 3041800300028 (20220216A) VT RECTION 2: SF8->MSC, PC/FIS->ARB-UNITS 3041800300029 for DATA and DATA-ERR 3041800300030 ENDBIB 28 0 3041800300031 NOCOMMON 0 0 3041800300032 DATA 9 8 3041800300033 ELEMENT DATA 1DATA-ERR 1MISC1 MISC1-ERR DATA 23041800300034 DATA-ERR 2MONIT MONIT-ERR 3041800300035 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM ARB-UNITS 3041800300036 ARB-UNITS PC/FIS PC/FIS 3041800300037 40. 101.5 0.5 1.3 0.4 9.13041800300038 2.2 7.38 0.52 3041800300039 42. 105.1 0.1 1.2 0.2 13.83041800300040 1.2 15.36 1.3 3041800300041 44. 110. 0.3 1.0 0.2 5.23041800300042 0.8 11.86 0.85 3041800300043 46. 115.1 0.8 1.7 0.6 2.53041800300044 0.9 6.83 0.73 3041800300045 54. 139.9 0.6 2.6 0.6 12.53041800300046 2.4 9.63 0.7 3041800300047 56. 144.1 0.3 1.4 0.4 10.73041800300048 1.7 16.23 0.7 3041800300049 58. 148.1 0.3 1.5 0.3 7.73041800300050 1.3 9.2 0.68 3041800300051 60. 152.4 0.4 1.2 0.4 2.43041800300052 0.7 2.4 0.26 3041800300053 ENDDATA 20 0 3041800300054 ENDSUBENT 53 0 3041800399999 ENDENTRY 3 0 3041899999999