ENTRY O0564 19991117 0000O056400000001 SUBENT O0564001 19991117 0000O056400100001 BIB 13 63 O056400100002 TITLE Independent Yields of Rb and Cs Isotopes from the O056400100003 Fission of Natural Uranium Induced by Protons of EnergyO056400100004 80 and 100 MeV. O056400100005 AUTHOR (J.K.P.LEE, G.PILAR, B.L.TRACY, L.YAFEE) O056400100006 INSTITUTE (1CANMCG) O056400100007 REFERENCE (J,JIN,37,2035,1975) O056400100008 HISTORY (19990827C) O056400100009 (19990830U) Last checking has been done. O056400100010 (19991117A) DATE is corrected O056400100011 SAMPLE Natural U(3)O(8) Was Deposited to a Thickness of 1.5 O056400100012 mg/cm**2 on to Strips of Graphite, Each Measuring 0.07O056400100013 Mm Thick and 15*4.3 mm*2 in Area. The Entire Target O056400100014 Consisted of 20 Such Strips Enclosed in a Tantalum O056400100015 Oven. O056400100016 FACILITY (SYNCY,1CANMCG) O056400100017 METHOD (EXTB) O056400100018 (OLMS) O056400100019 (EDEG) Protons of 80 MeV Energy were Obtained by O056400100020 Placing 1.75 cm of Berilium Degrader After the Exit of O056400100021 The Cyclotron. O056400100022 REL-REF (R,O0338001,J.H.DAVIES+,J,CJP,41,762,1963).At 80 MeV. O056400100023 (R,C0375001,G.FRIEDLANDER+,J,PR,129,1809,1963).At 100 O056400100024 MeV. O056400100025 ERR-ANALYS (ERR-T) The Error Quoted For Each Measurements O056400100026 Indicates Only the Precision Relative to the O056400100027 Measurements of the Yields of Other Isotopes of the O056400100028 Same Element and at the Same Bombarding Energy. O056400100029 (ERR-1) The Absolute Error or Error of Normalization isO056400100030 Indicated Separately For Each Isotopic Distribution. O056400100031 The Large Normalization Errors For Rubidium Cross O056400100032 Sections Result from the Difficulty in Obtaining an O056400100033 Accurate Absolute Cross Section of 18- Day Rb-86. O056400100034 Normalization Errors For Cesium are Taken from the O056400100035 Weighted Means of Individual Normalization Values. O056400100036 STATUS (TABLE) O056400100037 CORRECTION - Authors' Text - It was Necessary to Correct the O056400100038 Yields of Isotopes with Half-Lives of a Few Seconds orO056400100039 Less For Partial Decay Inside the Target. For this O056400100040 Purpose the Diffusion Rates of the Relatively O056400100041 Long-Lived Isotopes 90-Rb and 132-Cs were Measured by O056400100042 Following Their Counting Rates As Function of Time O056400100043 After Bombardment. It was Then Assumed That All O056400100044 Isotopes of the Same Element Diffuse Out of Graphite atO056400100045 The Same Rate. Correction Factors were Then CalculatedO056400100046 On the Basis of the Measured Diffusion Rates of the O056400100047 Long-Lived Isotopes and the Known Half-Lives of the O056400100048 Short-Lived Isotopes. O056400100049 The Experimental Yields were Also Corrected For a O056400100050 Slight Degree of Mass Discrimination in Favor of O056400100051 Lighter Masses. From the Measurement of the Count RatesO056400100052 Of Stable Isotopes of Known Abundances, this O056400100053 Discrimination was Found to be -1.0+-0.5% For 1% MassO056400100054 Difference O056400100055 COMMENT /by Authors/.The Mass Spectrometric Measurements Gave O056400100056 Only the Relative Isotopic Yields, Absolute Yields wereO056400100057 Obtained by Normalization to the Radiochemical O056400100058 Measurements of the Absolute Cross Sections of Rb-86 O056400100059 And Cs-130,131,132,134,136,138. See Rel-Ref. O056400100060 - By Compiler - The Authors Does not Report About O056400100061 Corrections For Rb and Cs Production Due to RadioactiveO056400100062 Decay of Short-Lived Pregnitors. The Effect Must be O056400100063 Observed For Rb-93 Production from Kr-93 (T1/2=1.29 O056400100064 SEC). O056400100065 ENDBIB 63 0 O056400100066 NOCOMMON 0 0 O056400100067 ENDSUBENT 66 0 O056400199999 SUBENT O0564002 19991117 0000O056400200001 BIB 1 1 O056400200002 REACTION (92-U-0(P,F)37-RB-86,IND,SIG) O056400200003 ENDBIB 1 0 O056400200004 COMMON 1 3 O056400200005 ERR-1 O056400200006 PER-CENT O056400200007 30. O056400200008 ENDCOMMON 3 0 O056400200009 DATA 3 2 O056400200010 EN DATA ERR-T O056400200011 MEV MB MB O056400200012 80. 0.7 0.07 O056400200013 100. 1. 0.04 O056400200014 ENDDATA 4 0 O056400200015 ENDSUBENT 14 0 O056400299999 SUBENT O0564003 19991117 0000O056400300001 BIB 1 1 O056400300002 REACTION (92-U-0(P,F)37-RB-87,IND,SIG) O056400300003 ENDBIB 1 0 O056400300004 COMMON 1 3 O056400300005 ERR-1 O056400300006 PER-CENT O056400300007 30. O056400300008 ENDCOMMON 3 0 O056400300009 DATA 3 2 O056400300010 EN DATA ERR-T O056400300011 MEV MB MB O056400300012 80. 3.3 0.2 O056400300013 100. 3.12 0.11 O056400300014 ENDDATA 4 0 O056400300015 ENDSUBENT 14 0 O056400399999 SUBENT O0564004 19991117 0000O056400400001 BIB 1 1 O056400400002 REACTION (92-U-0(P,F)37-RB-88,IND,SIG) O056400400003 ENDBIB 1 0 O056400400004 COMMON 1 3 O056400400005 ERR-1 O056400400006 PER-CENT O056400400007 30. O056400400008 ENDCOMMON 3 0 O056400400009 DATA 3 2 O056400400010 EN DATA ERR-T O056400400011 MEV MB MB O056400400012 80. 6.1 0.3 O056400400013 100. 6.15 0.16 O056400400014 ENDDATA 4 0 O056400400015 ENDSUBENT 14 0 O056400499999 SUBENT O0564005 19991117 0000O056400500001 BIB 1 1 O056400500002 REACTION (92-U-0(P,F)37-RB-89,IND,SIG) O056400500003 ENDBIB 1 0 O056400500004 COMMON 1 3 O056400500005 ERR-1 O056400500006 PER-CENT O056400500007 30. O056400500008 ENDCOMMON 3 0 O056400500009 DATA 3 2 O056400500010 EN DATA ERR-T O056400500011 MEV MB MB O056400500012 80. 13.1 0.4 O056400500013 100. 10.36 0.17 O056400500014 ENDDATA 4 0 O056400500015 ENDSUBENT 14 0 O056400599999 SUBENT O0564006 19991117 0000O056400600001 BIB 1 1 O056400600002 REACTION (92-U-0(P,F)37-RB-90,IND,SIG) O056400600003 ENDBIB 1 0 O056400600004 COMMON 1 3 O056400600005 ERR-1 O056400600006 PER-CENT O056400600007 30. O056400600008 ENDCOMMON 3 0 O056400600009 DATA 3 2 O056400600010 EN DATA ERR-T O056400600011 MEV MB MB O056400600012 80. 19.6 0.4 O056400600013 100. 14.9 0.5 O056400600014 ENDDATA 4 0 O056400600015 ENDSUBENT 14 0 O056400699999 SUBENT O0564007 19991117 0000O056400700001 BIB 1 1 O056400700002 REACTION (92-U-0(P,F)37-RB-91,IND,SIG) O056400700003 ENDBIB 1 0 O056400700004 COMMON 1 3 O056400700005 ERR-1 O056400700006 PER-CENT O056400700007 30. O056400700008 ENDCOMMON 3 0 O056400700009 DATA 3 2 O056400700010 EN DATA ERR-T O056400700011 MEV MB MB O056400700012 80. 20.9 1. O056400700013 100. 17.1 0.5 O056400700014 ENDDATA 4 0 O056400700015 ENDSUBENT 14 0 O056400799999 SUBENT O0564008 19991117 0000O056400800001 BIB 1 1 O056400800002 REACTION (92-U-0(P,F)37-RB-92,IND,SIG) O056400800003 ENDBIB 1 0 O056400800004 COMMON 1 3 O056400800005 ERR-1 O056400800006 PER-CENT O056400800007 30. O056400800008 ENDCOMMON 3 0 O056400800009 DATA 3 2 O056400800010 EN DATA ERR-T O056400800011 MEV MB MB O056400800012 80. 21. 0.9 O056400800013 100. 16.49 0.1 O056400800014 ENDDATA 4 0 O056400800015 ENDSUBENT 14 0 O056400899999 SUBENT O0564009 19991117 0000O056400900001 BIB 1 1 O056400900002 REACTION (92-U-0(P,F)37-RB-93,IND,SIG) O056400900003 ENDBIB 1 0 O056400900004 COMMON 1 3 O056400900005 ERR-1 O056400900006 PER-CENT O056400900007 30. O056400900008 ENDCOMMON 3 0 O056400900009 DATA 3 2 O056400900010 EN DATA ERR-T O056400900011 MEV MB MB O056400900012 80. 14. 0.6 O056400900013 100. 11.7 0.09 O056400900014 ENDDATA 4 0 O056400900015 ENDSUBENT 14 0 O056400999999 SUBENT O0564010 19991117 0000O056401000001 BIB 1 1 O056401000002 REACTION (92-U-0(P,F)37-RB-94,IND,SIG) O056401000003 ENDBIB 1 0 O056401000004 COMMON 1 3 O056401000005 ERR-1 O056401000006 PER-CENT O056401000007 30. O056401000008 ENDCOMMON 3 0 O056401000009 DATA 3 2 O056401000010 EN DATA ERR-T O056401000011 MEV MB MB O056401000012 80. 7.4 0.4 O056401000013 100. 5.82 0.08 O056401000014 ENDDATA 4 0 O056401000015 ENDSUBENT 14 0 O056401099999 SUBENT O0564011 19991117 0000O056401100001 BIB 1 1 O056401100002 REACTION (92-U-0(P,F)37-RB-95,IND,SIG) O056401100003 ENDBIB 1 0 O056401100004 COMMON 1 3 O056401100005 ERR-1 O056401100006 PER-CENT O056401100007 30. O056401100008 ENDCOMMON 3 0 O056401100009 DATA 3 2 O056401100010 EN DATA ERR-T O056401100011 MEV MB MB O056401100012 80. 4.3 0.3 O056401100013 100. 3.94 0.07 O056401100014 ENDDATA 4 0 O056401100015 ENDSUBENT 14 0 O056401199999 SUBENT O0564012 19991117 0000O056401200001 BIB 1 1 O056401200002 REACTION (92-U-0(P,F)37-RB-96,IND,SIG) O056401200003 ENDBIB 1 0 O056401200004 COMMON 1 3 O056401200005 ERR-1 O056401200006 PER-CENT O056401200007 30. O056401200008 ENDCOMMON 3 0 O056401200009 DATA 3 2 O056401200010 EN DATA ERR-T O056401200011 MEV MB MB O056401200012 80. 1.5 0.2 O056401200013 100. 1.22 0.04 O056401200014 ENDDATA 4 0 O056401200015 ENDSUBENT 14 0 O056401299999 SUBENT O0564013 19991117 0000O056401300001 BIB 1 1 O056401300002 REACTION (92-U-0(P,F)37-RB-97,IND,SIG) O056401300003 ENDBIB 1 0 O056401300004 NOCOMMON 0 0 O056401300005 DATA 4 1 O056401300006 EN DATA ERR-T ERR-1 O056401300007 MEV MB MB PER-CENT O056401300008 100. 0.43 0.02 30. O056401300009 ENDDATA 3 0 O056401300010 ENDSUBENT 9 0 O056401399999 SUBENT O0564014 19991117 0000O056401400001 BIB 1 1 O056401400002 REACTION (92-U-0(P,F)55-CS-129,IND,SIG) O056401400003 ENDBIB 1 0 O056401400004 NOCOMMON 0 0 O056401400005 DATA 4 1 O056401400006 EN DATA ERR-T ERR-1 O056401400007 MEV MB MB PER-CENT O056401400008 100. 0.09 0.03 7. O056401400009 ENDDATA 3 0 O056401400010 ENDSUBENT 9 0 O056401499999 SUBENT O0564015 19991117 0000O056401500001 BIB 1 1 O056401500002 REACTION (92-U-0(P,F)55-CS-130,IND,SIG) O056401500003 ENDBIB 1 0 O056401500004 NOCOMMON 0 0 O056401500005 DATA 4 1 O056401500006 EN DATA ERR-T ERR-1 O056401500007 MEV MB MB PER-CENT O056401500008 100. 0.49 0.04 7. O056401500009 ENDDATA 3 0 O056401500010 ENDSUBENT 9 0 O056401599999 SUBENT O0564016 19991117 0000O056401600001 BIB 1 1 O056401600002 REACTION (92-U-0(P,F)55-CS-131,IND,SIG) O056401600003 ENDBIB 1 0 O056401600004 NOCOMMON 0 0 O056401600005 DATA 4 2 O056401600006 EN DATA ERR-T ERR-1 O056401600007 MEV MB MB PER-CENT O056401600008 80. 0.61 0.08 3. O056401600009 100. 1.54 0.08 7. O056401600010 ENDDATA 4 0 O056401600011 ENDSUBENT 10 0 O056401699999 SUBENT O0564017 19991117 0000O056401700001 BIB 1 1 O056401700002 REACTION (92-U-0(P,F)55-CS-132,IND,SIG) O056401700003 ENDBIB 1 0 O056401700004 NOCOMMON 0 0 O056401700005 DATA 4 2 O056401700006 EN DATA ERR-T ERR-1 O056401700007 MEV MB MB PER-CENT O056401700008 80. 2.33 0.19 3. O056401700009 100. 3.81 0.15 7. O056401700010 ENDDATA 4 0 O056401700011 ENDSUBENT 10 0 O056401799999 SUBENT O0564018 19991117 0000O056401800001 BIB 1 1 O056401800002 REACTION (92-U-0(P,F)55-CS-133,IND,SIG) O056401800003 ENDBIB 1 0 O056401800004 NOCOMMON 0 0 O056401800005 DATA 4 2 O056401800006 EN DATA ERR-T ERR-1 O056401800007 MEV MB MB PER-CENT O056401800008 80. 6.5 0.5 3. O056401800009 100. 8.2 0.3 7. O056401800010 ENDDATA 4 0 O056401800011 ENDSUBENT 10 0 O056401899999 SUBENT O0564019 19991117 0000O056401900001 BIB 1 1 O056401900002 REACTION (92-U-0(P,F)55-CS-134,IND,SIG) O056401900003 ENDBIB 1 0 O056401900004 NOCOMMON 0 0 O056401900005 DATA 4 2 O056401900006 EN DATA ERR-T ERR-1 O056401900007 MEV MB MB PER-CENT O056401900008 80. 13.2 0.6 3. O056401900009 100. 11. 0.3 7. O056401900010 ENDDATA 4 0 O056401900011 ENDSUBENT 10 0 O056401999999 SUBENT O0564020 19991117 0000O056402000001 BIB 1 1 O056402000002 REACTION (92-U-0(P,F)55-CS-135,IND,SIG) O056402000003 ENDBIB 1 0 O056402000004 NOCOMMON 0 0 O056402000005 DATA 4 2 O056402000006 EN DATA ERR-T ERR-1 O056402000007 MEV MB MB PER-CENT O056402000008 80. 17.6 1. 3. O056402000009 100. 13.8 0.4 7. O056402000010 ENDDATA 4 0 O056402000011 ENDSUBENT 10 0 O056402099999 SUBENT O0564021 19991117 0000O056402100001 BIB 1 1 O056402100002 REACTION (92-U-0(P,F)55-CS-136,IND,SIG) O056402100003 ENDBIB 1 0 O056402100004 NOCOMMON 0 0 O056402100005 DATA 4 2 O056402100006 EN DATA ERR-T ERR-1 O056402100007 MEV MB MB PER-CENT O056402100008 80. 21.3 1. 3. O056402100009 100. 15.2 0.4 7. O056402100010 ENDDATA 4 0 O056402100011 ENDSUBENT 10 0 O056402199999 SUBENT O0564022 19991117 0000O056402200001 BIB 1 1 O056402200002 REACTION (92-U-0(P,F)55-CS-137,IND,SIG) O056402200003 ENDBIB 1 0 O056402200004 NOCOMMON 0 0 O056402200005 DATA 4 2 O056402200006 EN DATA ERR-T ERR-1 O056402200007 MEV MB MB PER-CENT O056402200008 80. 23.5 1.3 3. O056402200009 100. 15.9 0.6 7. O056402200010 ENDDATA 4 0 O056402200011 ENDSUBENT 10 0 O056402299999 SUBENT O0564023 19991117 0000O056402300001 BIB 1 1 O056402300002 REACTION (92-U-0(P,F)55-CS-138,IND,SIG) O056402300003 ENDBIB 1 0 O056402300004 NOCOMMON 0 0 O056402300005 DATA 4 2 O056402300006 EN DATA ERR-T ERR-1 O056402300007 MEV MB MB PER-CENT O056402300008 80. 18. 2.7 3. O056402300009 100. 18.4 2. 7. O056402300010 ENDDATA 4 0 O056402300011 ENDSUBENT 10 0 O056402399999 SUBENT O0564024 19991117 0000O056402400001 BIB 1 1 O056402400002 REACTION (92-U-0(P,F)55-CS-139,IND,SIG) O056402400003 ENDBIB 1 0 O056402400004 NOCOMMON 0 0 O056402400005 DATA 4 2 O056402400006 EN DATA ERR-T ERR-1 O056402400007 MEV MB MB PER-CENT O056402400008 80. 15.6 1. 3. O056402400009 100. 12.1 0.3 7. O056402400010 ENDDATA 4 0 O056402400011 ENDSUBENT 10 0 O056402499999 SUBENT O0564025 19991117 0000O056402500001 BIB 1 1 O056402500002 REACTION (92-U-0(P,F)55-CS-140,IND,SIG) O056402500003 ENDBIB 1 0 O056402500004 NOCOMMON 0 0 O056402500005 DATA 4 2 O056402500006 EN DATA ERR-T ERR-1 O056402500007 MEV MB MB PER-CENT O056402500008 80. 11.9 1.3 3. O056402500009 100. 8.8 0.4 7. O056402500010 ENDDATA 4 0 O056402500011 ENDSUBENT 10 0 O056402599999 SUBENT O0564026 19991117 0000O056402600001 BIB 1 1 O056402600002 REACTION (92-U-0(P,F)55-CS-141,IND,SIG) O056402600003 ENDBIB 1 0 O056402600004 NOCOMMON 0 0 O056402600005 DATA 4 2 O056402600006 EN DATA ERR-T ERR-1 O056402600007 MEV MB MB PER-CENT O056402600008 80. 7.7 1. 3. O056402600009 100. 7.2 0.4 7. O056402600010 ENDDATA 4 0 O056402600011 ENDSUBENT 10 0 O056402699999 SUBENT O0564027 19991117 0000O056402700001 BIB 1 1 O056402700002 REACTION (92-U-0(P,F)55-CS-142,IND,SIG) O056402700003 ENDBIB 1 0 O056402700004 NOCOMMON 0 0 O056402700005 DATA 4 2 O056402700006 EN DATA ERR-T ERR-1 O056402700007 MEV MB MB PER-CENT O056402700008 80. 6.3 0.7 3. O056402700009 100. 6.3 0.6 7. O056402700010 ENDDATA 4 0 O056402700011 ENDSUBENT 10 0 O056402799999 SUBENT O0564028 19991117 0000O056402800001 BIB 1 1 O056402800002 REACTION (92-U-0(P,F)55-CS-143,IND,SIG) O056402800003 ENDBIB 1 0 O056402800004 NOCOMMON 0 0 O056402800005 DATA 4 2 O056402800006 EN DATA ERR-T ERR-1 O056402800007 MEV MB MB PER-CENT O056402800008 80. 3. 0.5 3. O056402800009 100. 3. 0.3 7. O056402800010 ENDDATA 4 0 O056402800011 ENDSUBENT 10 0 O056402899999 SUBENT O0564029 19991117 0000O056402900001 BIB 1 1 O056402900002 REACTION (92-U-0(P,F)55-CS-144,IND,SIG) O056402900003 ENDBIB 1 0 O056402900004 NOCOMMON 0 0 O056402900005 DATA 4 2 O056402900006 EN DATA ERR-T ERR-1 O056402900007 MEV MB MB PER-CENT O056402900008 80. 1.6 0.3 3. O056402900009 100. 0.97 0.11 7. O056402900010 ENDDATA 4 0 O056402900011 ENDSUBENT 10 0 O056402999999 ENDENTRY 29 0 O056499999999