ENTRY 10516 20190418 14511051600000001 SUBENT 10516001 20190418 14511051600100001 BIB 17 48 1051600100002 TITLE Mass distributions for thermal-neutron-induced fission 1051600100003 of 255Fm and 251Cf 1051600100004 AUTHOR (K.F.Flynn,J.E.Gindler,R.K.Sjoblom,L.E.Glendenin) 1051600100005 REFERENCE (J,PR/C,11,1676,1975) 1051600100006 #doi:10.1103/PhysRevC.11.1676 1051600100007 #NSR: 1975FL06 1051600100008 (R,ANL-7996,8,1973) The same data for 255Fm and 251Cf 1051600100009 as main ref., data for spontaneous fission of 253Es 1051600100010 included in EXFOR #13340. 1051600100011 #NSR: 1973FLZQ 1051600100012 REL-REF (O,13340001,K.F.Flynn+,J,JIN,38,661,1976) 1051600100013 INSTITUTE (1USAANL) 1051600100014 FACILITY (REAC,1USAANL) Transuranium production facility at CP-51051600100015 INC-SOURCE (REAC) Neutrons from CP-5 reactor 1051600100016 INC-SPECT Reactor spectrum 1051600100017 METHOD (CHSEP) Activation counting of radiochemically 1051600100018 separated fission products. A source of einsteinium 1051600100019 containing masses 253, 254 and 255 was obtained from 1051600100020 the Transuranium Element Production Program at Oak 1051600100021 Ridge National Laboratory. 255Fm is in secular 1051600100022 equilibrium with 255Es was separated from parent 1051600100023 einsteinium isotope. After removal it was deposited 1051600100024 on platinum disks for irradiations. The 252Cf sources 1051600100025 were formed from the alpha-decay of 255Fm. 1051600100026 DETECTOR (PROPC) Low background beta proportional counter 1051600100027 (GELI) Germanium-lithium detector for cobalt monitor 1051600100028 MONITOR (27-CO-59(N,G)27-CO-60,,SIG) 1051600100029 Final mass yield curves normalized to 200%. 1051600100030 DECAY-MON (27-CO-60-G,5.26YR) 1051600100031 CORRECTION Data have been corrected for chemical yield, counter 1051600100032 efficiency, decay, genetic relationships, and 1051600100033 relative degree of saturation. 1051600100034 ERR-ANALYS (DATA-ERR) Errors given evaluated on basis of number 1051600100035 of measurements, uncertainties in applied correction 1051600100036 factors and statistical errors. 1051600100037 DECAY-DATA (100-FM-255,20.1HR) 1051600100038 (99-ES-255,39.8D) 1051600100039 STATUS (APRVD) Approved by K.F.Flynn 1978/3/1. 1051600100040 HISTORY (19750523C) 1051600100041 (19801027A) BIB corrections. 1051600100042 (19810529A) DECAY-MON correction. 1051600100043 (19840426A) BIB correction. 1051600100044 (19900404A) BIB update, incident spectrum changed. 1051600100045 (20040427A) Updated to new date formats, lower case. 1051600100046 (20170816U) BP: added doi, updated status and 1051600100047 experimental information. 1051600100048 (20190418U) OG. 2nd reference was added 1051600100049 #NSR was added 1051600100050 ENDBIB 48 0 1051600100051 COMMON 2 3 1051600100052 EN-DUMMY MONIT 1051600100053 EV B 1051600100054 0.0253 37. 1051600100055 ENDCOMMON 3 0 1051600100056 ENDSUBENT 55 0 1051600199999 SUBENT 10516002 20170816 14331051600200001 BIB 3 3 1051600200002 REACTION (98-CF-251(N,F)ELEM/MASS,CUM,FY,,SPA) 1051600200003 STATUS (TABLE) Table I, page 1677. 1051600200004 HISTORY (19801027A) BIB, common corrections. 1051600200005 ENDBIB 3 0 1051600200006 NOCOMMON 0 0 1051600200007 DATA 4 26 1051600200008 ELEMENT MASS DATA DATA-ERR 1051600200009 NO-DIM NO-DIM PC/FIS PC/FIS 1051600200010 38. 91. 0.51 0.04 1051600200011 39. 93. 0.72 0.07 1051600200012 40. 95. 0.99 0.10 1051600200013 40. 97. 1.61 0.12 1051600200014 42. 99. 3.22 0.20 1051600200015 44. 105. 4.79 0.40 1051600200016 46. 109. 5.16 0.40 1051600200017 46. 112. 5.24 0.40 1051600200018 47. 111. 4.93 0.25 1051600200019 47. 113. 3.65 0.37 1051600200020 48. 115. 4.08 0.20 1051600200021 50. 121. 0.46 0.04 1051600200022 50. 125. 0.19 0.02 1051600200023 51. 127. 0.59 0.06 1051600200024 51. 129. 0.90 0.09 1051600200025 52. 132. 4.18 0.42 1051600200026 53. 131. 1.77 0.14 1051600200027 53. 133. 3.78 0.38 1051600200028 53. 135. 4.06 0.41 1051600200029 56. 140. 4.36 0.22 1051600200030 58. 141. 4.79 0.48 1051600200031 58. 143. 4.91 0.30 1051600200032 60. 147. 3.49 0.35 1051600200033 61. 149. 3.00 0.30 1051600200034 61. 151. 1.24 0.18 1051600200035 62. 156. 0.56 0.06 1051600200036 ENDDATA 28 0 1051600200037 ENDSUBENT 36 0 1051600299999 SUBENT 10516003 20170816 14331051600300001 BIB 3 3 1051600300002 REACTION (100-FM-255(N,F)ELEM/MASS,CUM,FY,,SPA) 1051600300003 STATUS (TABLE) Table I, page 1677. 1051600300004 HISTORY (19801027A) BIB, common corrections. 1051600300005 ENDBIB 3 0 1051600300006 NOCOMMON 0 0 1051600300007 DATA 4 22 1051600300008 ELEMENT MASS DATA DATA-ERR 1051600300009 NO-DIM NO-DIM PC/FIS PC/FIS 1051600300010 39. 93. 0.20 0.04 1051600300011 40. 97. 0.70 0.07 1051600300012 42. 99. 1.56 0.16 1051600300013 44. 105. 2.43 0.24 1051600300014 46. 109. 2.60 0.52 1051600300015 46. 112. 3.74 0.74 1051600300016 47. 111. 2.85 0.58 1051600300017 48. 115. 5.13 0.51 1051600300018 50. 121. 3.27 0.33 1051600300019 50. 125. 1.63 0.32 1051600300020 51. 127. 2.39 0.24 1051600300021 51. 129. 2.33 0.23 1051600300022 52. 132. 4.90 0.49 1051600300023 53. 131. 3.35 0.34 1051600300024 53. 133. 5.58 0.56 1051600300025 53. 135. 6.15 0.62 1051600300026 56. 140. 5.03 0.50 1051600300027 58. 143. 3.27 0.33 1051600300028 61. 149. 1.53 0.15 1051600300029 61. 151. 1.34 0.13 1051600300030 62. 153. 1.04 0.10 1051600300031 63. 157. 0.38 0.04 1051600300032 ENDDATA 24 0 1051600300033 ENDSUBENT 32 0 1051600399999 SUBENT 10516004 20170816 14331051600400001 BIB 2 3 1051600400002 REACTION (98-CF-251(N,F)MASS,CHN,FY,,SPA) 1051600400003 STATUS (DEP,10516002) 1051600400004 (TABLE) Table I, page 1677. 1051600400005 ENDBIB 3 0 1051600400006 NOCOMMON 0 0 1051600400007 DATA 3 4 1051600400008 MASS DATA DATA-ERR 1051600400009 NO-DIM PC/FIS PC/FIS 1051600400010 113. 4.93 0.49 1051600400011 115. 4.56 0.23 1051600400012 121. 0.53 0.05 1051600400013 125. 0.40 0.04 1051600400014 ENDDATA 6 0 1051600400015 ENDSUBENT 14 0 1051600499999 SUBENT 10516005 20170816 14331051600500001 BIB 3 4 1051600500002 REACTION (100-FM-255(N,F)MASS,CHN,FY,,SPA) 1051600500003 STATUS (DEP,10516003) 1051600500004 (TABLE) Table I, page 1677. 1051600500005 HISTORY (19900404A) COMMON removed. 1051600500006 ENDBIB 4 0 1051600500007 NOCOMMON 0 0 1051600500008 DATA 3 4 1051600500009 MASS DATA DATA-ERR 1051600500010 NO-DIM PC/FIS PC/FIS 1051600500011 113. 4.63 0.92 1051600500012 115. 5.74 0.57 1051600500013 121. 3.76 0.38 1051600500014 125. 3.42 0.68 1051600500015 ENDDATA 6 0 1051600500016 ENDSUBENT 15 0 1051600599999 SUBENT 10516006 20170816 14331051600600001 BIB 4 7 1051600600002 REACTION (98-CF-251(N,F),,NU,,SPA,DERIV) 1051600600003 ANALYSIS Nubar determined as compound mass minus mean fragment 1051600600004 mass 1051600600005 STATUS (DEP,10516002) 1051600600006 (TABLE) Table II, page 1679. 1051600600007 HISTORY (19801027A) Status added. 1051600600008 (20040427A) Units updated. 1051600600009 ENDBIB 7 0 1051600600010 NOCOMMON 0 0 1051600600011 DATA 2 1 1051600600012 DATA DATA-ERR 1051600600013 PRT/FIS PRT/FIS 1051600600014 4.1 0.5 1051600600015 ENDDATA 3 0 1051600600016 ENDSUBENT 15 0 1051600699999 SUBENT 10516007 20170816 14331051600700001 BIB 4 7 1051600700002 REACTION (100-FM-255(N,F),,NU,,SPA,DERIV) 1051600700003 ANALYSIS Nubar determined as compound mass minus mean fragment 1051600700004 mass 1051600700005 STATUS (DEP,10516003) 1051600700006 (TABLE) Table II, page 1679. 1051600700007 HISTORY (19801027A) Status added. 1051600700008 (20040427A) Units updated. 1051600700009 ENDBIB 7 0 1051600700010 NOCOMMON 0 0 1051600700011 DATA 2 1 1051600700012 DATA DATA-ERR 1051600700013 PRT/FIS PRT/FIS 1051600700014 4.0 0.5 1051600700015 ENDDATA 3 0 1051600700016 ENDSUBENT 15 0 1051600799999 SUBENT 10516008 20170816 14331051600800001 BIB 4 11 1051600800002 REACTION (98-CF-251(N,F),,SIG,,SPA,DERIV) 1051600800003 ANALYSIS Cross section determined from 1051600800004 Sig = A/N*Phi*Y with A=saturation activity (determined 1051600800005 from fission product counting data); N=no. of atoms 1051600800006 (determined by alpha counting); Phi=neutron flux 1051600800007 (determined from cobalt flux monitor); Y=fission 1051600800008 yield (determined from normalization of the mass yield 1051600800009 curve to 200%). 1051600800010 STATUS (DEP,10516002) 1051600800011 (TABLE) page 1680. 1051600800012 HISTORY (19801027A) Added status. 1051600800013 ENDBIB 11 0 1051600800014 NOCOMMON 0 0 1051600800015 DATA 2 1 1051600800016 DATA DATA-ERR 1051600800017 B B 1051600800018 5300. 530. 1051600800019 ENDDATA 3 0 1051600800020 ENDSUBENT 19 0 1051600899999 SUBENT 10516009 20170816 14331051600900001 BIB 4 11 1051600900002 REACTION (100-FM-255(N,F),,SIG,,SPA,DERIV) 1051600900003 ANALYSIS Cross section determined from 1051600900004 Sig = A/N*Phi*Y with A=saturation activity (determined 1051600900005 from fission product counting data); N=no. of atoms 1051600900006 (determined by alpha counting); Phi=neutron flux 1051600900007 (determined from cobalt flux monitor); Y=fission 1051600900008 yield (determined from normalization of the mass yield 1051600900009 curve to 200%). 1051600900010 STATUS (DEP,10516003) 1051600900011 (TABLE) page 1680. 1051600900012 HISTORY (19801027A) Added status. 1051600900013 ENDBIB 11 0 1051600900014 NOCOMMON 0 0 1051600900015 DATA 2 1 1051600900016 DATA DATA-ERR 1051600900017 B B 1051600900018 3200. 320. 1051600900019 ENDDATA 3 0 1051600900020 ENDSUBENT 19 0 1051600999999 ENDENTRY 9 0 1051699999999