ENTRY 12691 20191114 14611269100000001 SUBENT 12691001 20191114 14611269100100001 BIB 10 23 1269100100002 TITLE Determination of the charge and mass distribution in 1269100100003 the fission of 252Cf 1269100100004 AUTHOR (E.Cheifetz,J.B.Wilhelmy,R.C.Jared,S.G.Thompson) 1269100100005 REFERENCE (J,PR/C,4,1913,1971) 1269100100006 #doi:10.1103/PhysRevC.4.1913 1269100100007 REL-REF (M,,J.B.Wilhelmy+,J,PRL,25,1122,1970) 1269100100008 (M,,E.Cheifetz+,J,PRL,25,38,1970) 1269100100009 INSTITUTE (1USABRK) 1269100100010 DETECTOR (SOLST) 1269100100011 METHOD (COINC) The measurement of gamma-rays from 2+1->0+1 1269100100012 transitions in coincidence with fission fragment 1269100100013 pulses proportional to their kinetic energy enables 1269100100014 to extract independent fission yields. About 5% of 1269100100015 the ground state yield is expected to by-pass the 1269100100016 lowest 2+1 state. 1269100100017 CORRECTION Corrected for electron conversion and delayed emission 1269100100018 components 1269100100019 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. 1269100100020 HISTORY (19890828C) VM 1269100100021 (20191114A) BP: Updated to new date formats,lower 1269100100022 case. Corrections according last EXFOR rules and 1269100100023 Dict. Added doi, updated method, corrected subentry 2 1269100100024 and added subentries 3-4. 1269100100025 ENDBIB 23 0 1269100100026 NOCOMMON 0 0 1269100100027 ENDSUBENT 26 0 1269100199999 SUBENT 12691002 20191114 14611269100200001 BIB 3 8 1269100200002 REACTION (98-CF-252(0,F)ELEM/MASS,PR,SPC) 1269100200003 STATUS (TABLE) Table I page 1916-1917. Uncertainties come 1269100200004 from the 71CHE1 Rider compilation. 1269100200005 HISTORY (19900326A) Gamma-ray energies added, reaction 1269100200006 corrected, data units corrected. 1269100200007 (19900605A) Isomer field removed. 1269100200008 (20191114A) REACTION modified, corrected 118Pd data 1269100200009 to 118Cd 1269100200010 ENDBIB 8 0 1269100200011 NOCOMMON 0 0 1269100200012 DATA 6 38 1269100200013 ELEMENT MASS E DATA DATA-ERR DATA-MAX 1269100200014 NO-DIM NO-DIM KEV PC/FIS PC/FIS PC/FIS 1269100200015 38. 94. 837.4 0.51 0.08 1269100200016 38. 96. 815.5 0.34 0.05 1269100200017 40. 98. 1233. 0.30 0.05 1269100200018 40. 100. 212.7 1.80 0.27 1269100200019 40. 102. 151.9 1.43 0.22 1269100200020 42. 102. 296.0 0.46 0.07 1269100200021 42. 104. 192.3 3.37 0.51 1269100200022 42. 106. 171.7 3.37 0.51 1269100200023 44. 106. 269. 0.16 0.03 1269100200024 44. 108. 242.2 1.94 0.29 1269100200025 44. 110. 240.8 3.49 0.59 1269100200026 44. 112. 236.8 0.97 0.15 1269100200027 46. 112. 348.8 0.77 0.12 1269100200028 46. 114. 332.9 1.48 0.23 1269100200029 46. 116. 340.6 0.87 0.13 1269100200030 48. 118. 488.0 0.32 0.05 1269100200031 48. 120. 505.5 0.30 0.10 1269100200032 52. 132. 974. 0.20 0.10 1269100200033 52. 134. 1278. 1.50 0.23 1269100200034 52. 136. 688. 0.81 0.20 1269100200035 52. 136. 1134. 0.68 0.20 1269100200036 54. 136. 1313. 0.75 0.30 1269100200037 54. 138. 589.5 2.30 0.35 1269100200038 54. 140. 376.8 1.50 0.23 1269100200039 56. 140. 602.2 0.52 0.08 1269100200040 56. 142. 359.7 2.90 0.44 1269100200041 56. 144. 199.4 3.60 0.54 1269100200042 56. 146. 181.0 1.01 0.15 1269100200043 58. 144. 397.5 0.20 0.05 1269100200044 58. 146. 258.6 1.04 0.16 1269100200045 58. 148. 158.7 2.31 0.32 1269100200046 58. 150. 97.1 0.98 1269100200047 60. 150. 130.1 0.15 0.03 1269100200048 60. 152. 75.9 0.6 1269100200049 60. 154. 72.8 0.4 1269100200050 62. 154. 82.0 0.04 0.02 1269100200051 62. 156. 76. 0.10 1269100200052 62. 158. 72.8 0.15 1269100200053 ENDDATA 40 0 1269100200054 ENDSUBENT 53 0 1269100299999 SUBENT 12691003 20191114 14611269100300001 BIB 4 9 1269100300002 REACTION (98-CF-252(0,F)MASS,SEC,ZP) 1269100300003 ANALYSIS Mass chain yields depends on ZP and sigma Z. Since 1269100300004 distributions are very arrow and independent yields 1269100300005 are only known for even-even nuclei, therefore there 1269100300006 are no mass chains that have more than two nuclei. 1269100300007 This allowed to solve the equation analytically for 1269100300008 A = 102, 106, 112, 136, 140, 144, 146, 154. 1269100300009 HISTORY (20191114C) BP 1269100300010 STATUS (TABLE) Table II, page 1920. 1269100300011 ENDBIB 9 0 1269100300012 NOCOMMON 0 0 1269100300013 DATA 3 8 1269100300014 MASS DATA DATA-ERR 1269100300015 NO-DIM NO-DIM NO-DIM 1269100300016 102.0 40.72 0.06 1269100300017 106.0 42.24 0.31 1269100300018 112.0 44.91 0.11 1269100300019 136.0 53.00 0.06 1269100300020 140.0 54.84 0.04 1269100300021 144.0 56.27 0.09 1269100300022 146.0 57.01 0.03 1269100300023 154.0 60.66 0.06 1269100300024 ENDDATA 10 0 1269100300025 ENDSUBENT 24 0 1269100399999 SUBENT 12691004 20191114 14611269100400001 BIB 4 6 1269100400002 REACTION (98-CF-252(0,F)ELEM,SEC,AP) 1269100400003 ANALYSIS Mass chain yields depends on AP and sigma A. They 1269100400004 were determined by the least squares fitting of 1269100400005 measured independent yields. 1269100400006 HISTORY (20191114C) BP 1269100400007 STATUS (TABLE) Table III, page 1921. 1269100400008 ENDBIB 6 0 1269100400009 NOCOMMON 0 0 1269100400010 DATA 3 12 1269100400011 ELEMENT DATA DATA-ERR 1269100400012 NO-DIM NO-DIM NO-DIM 1269100400013 38.0 94.60 0.24 1269100400014 40.0 100.77 0.12 1269100400015 42.0 105.00 0.16 1269100400016 44.0 109.77 0.09 1269100400017 46.0 114.10 0.21 1269100400018 48.0 118.89 0.43 1269100400019 52.0 134.50 0.11 1269100400020 54.0 138.45 0.13 1269100400021 56.0 143.29 0.08 1269100400022 58.0 147.95 0.14 1269100400023 60.0 152.55 0.19 1269100400024 62.0 158.59 2.92 1269100400025 ENDDATA 14 0 1269100400026 ENDSUBENT 25 0 1269100499999 ENDENTRY 4 0 1269199999999