ENTRY 23349 20171030 22682334900000001 SUBENT 23349001 20171030 22682334900100001 BIB 11 22 2334900100002 REFERENCE (J,JIN,30,1649,1968) 2334900100003 AUTHOR (L.Tomlinson, M.H.Hurdus) 2334900100004 TITLE Delayed neutron precursors-II: Antimony and arsenic 2334900100005 precursors separated chemically 2334900100006 INSTITUTE (2UK HAR) Chemistry Division,AERE,Harwell,Didcot, 2334900100007 Berks hire . 2334900100008 REL-REF (M,,L.Tomlinson,J,JIN,28,287,1966) 2334900100009 (M,23351001,L.Tomlinson+,J,JIN,30,1125,1968) 2334900100010 Irradiation procedure, counting technique,neutron 2334900100011 flux measurement. 2334900100012 FACILITY (REAC,2UK HAR) 2334900100013 INC-SOURCE (REAC) 2334900100014 INC-SPECT Thermal neutron flux was measured by: 2334900100015 - separating fission product Ba-140 to be 2334900100016 (4.62+-0.22)*10**10 n/cm2/sec.; 2334900100017 - average flux outside - 16 % higher. 2334900100018 METHOD (CHSEP) high-speed chemical technique . 2334900100019 Hydrides were formed by Zn+H(2)SO(4) 2334900100020 Total time for chemical operations 5.4sec. 2334900100021 DETECTOR Neutron detector re-calibrated. 2334900100022 Efficiency 1.18+-0.05 % for delayed neutrons. 2334900100023 HISTORY (20171030C) M.M. 2334900100024 ENDBIB 22 0 2334900100025 NOCOMMON 0 0 2334900100026 ENDSUBENT 25 0 2334900199999 SUBENT 23349002 20171030 22682334900200001 BIB 9 19 2334900200002 REACTION (92-U-235(N,F)ELEM/MASS,DL/IND,NU,,SPA) 2334900200003 Measured by chemical separation 2334900200004 It's uncertain CUM or IND . 2334900200005 MONITOR (92-U-235(N,F)56-BA-140,CUM,FY) For neutron flux 2334900200006 MONIT-REF (23351002,L.Tomlinson+,J,JIN,30,1125,1968) 2334900200007 REL-REF (R,23351002,L.Tomlinson+,J,JIN,30,1125,1968) 2334900200008 Data of electrolytic measurement 2334900200009 DECAY-DATA (51-SB-135,1.696SEC) 1.696+-0.021 sec measured 2334900200010 (51-SB-134,11.3SEC) 11.3+-0.3 sec measured 2334900200011 (33-AS-85,2.0283SEC) 2.028+-0.012 sec measured . 2334900200012 As-85 or As-86 . 2334900200013 FLAG (1.) Data are given for As-85,86. 2334900200014 ERR-ANALYS (DATA-ERR) Standard deviation . 2334900200015 ADD-RES Weighted mean of this experiment and electrolytic 2334900200016 measurement ( see REL-REF), pc/fis 2334900200017 Element Mass 2334900200018 33. 85. 9.7E-2 +- 0.8E-2 2334900200019 51. 135. 3.5E-2 +- 0.3E-2 2334900200020 STATUS (TABLE) Table 7 of J.Inorg.Nucl.Chem.,30,1649,1968 2334900200021 ENDBIB 19 0 2334900200022 COMMON 2 3 2334900200023 EN-DUMMY MONIT 2334900200024 EV PC/FIS 2334900200025 0.0253 6.35 2334900200026 ENDCOMMON 3 0 2334900200027 DATA 5 3 2334900200028 ELEMENT MASS DATA DATA-ERR FLAG 2334900200029 NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM 2334900200030 33. 85. 9.8E-2 1.0E-2 1. 2334900200031 51. 134. 0.028E-2 0.004E-2 2334900200032 51. 135. 3.5E-2 0.5E-2 2334900200033 ENDDATA 5 0 2334900200034 ENDSUBENT 33 0 2334900299999 SUBENT 23349003 20171030 22682334900300001 BIB 7 15 2334900300002 REACTION (33-AS-85(0,B-)34-SE-85,,PN,,,DERIV) 2334900300003 DECAY-DATA (33-AS-85,2.0283SEC) 2.028+-0.012 sec measured . 2334900300004 As-85 (or As-86) and measured delayed neutron yield .2334900300005 ANALYSIS Pn value was calculated as measured delayed neutron 2334900300006 yield ( weighted avarage of electrolitical on chemical 2334900300007 methods) divided by the independent fission yield 2334900300008 0.44 %for As-85 from rel.ref. 2334900300009 ASSUMED (ASSUM,92-U-235(N,F)33-AS-85,IND,FY) 2334900300010 REL-REF (R,,L.E.Weaver+,R,USNRDL-TR-633,1963) 2334900300011 Ref. for ASSUM 2334900300012 ERR-ANALYS (DATA-ERR,25.) Errors can not estimated because of 2334900300013 uncertainties of independent yields, but must be at 2334900300014 least 25.% 2334900300015 STATUS (TABLE) Text,p. 1660 of J.Inorg.Nucl.Chem.,30,1649,19682334900300016 (DEP,23349002) Delayed neutron yield. 2334900300017 ENDBIB 15 0 2334900300018 NOCOMMON 0 0 2334900300019 DATA 2 1 2334900300020 DATA ASSUM 2334900300021 NO-DIM PC/FIS 2334900300022 0.22 0.44 2334900300023 ENDDATA 3 0 2334900300024 ENDSUBENT 23 0 2334900399999 SUBENT 23349004 20171030 22682334900400001 BIB 6 15 2334900400002 REACTION (51-SB-134(0,B-)52-TE-134,,PN,,,DERIV) 2334900400003 DECAY-DATA (51-SB-134,11.3SEC) 11.3+-0.3 sec measured 2334900400004 ANALYSIS Pn value was calculated as measured delayed neutron 2334900400005 yield ( weighted avarage of electrolitical on chemical2334900400006 methods) divided by the independent fission yield 2334900400007 0.34 % for Sb-134 from rel.ref. 2334900400008 ASSUMED (ASSUM,92-U-235(N,F)51-SB-134,IND,FY) 2334900400009 Calculated from an exp. charge distribution curve for 2334900400010 134 mass chain in : 2334900400011 P.O.Strom,A.A.Delucchi,A.E.Greendale, to be published.2334900400012 ERR-ANALYS (DATA-ERR,25.) Errors can not estimated because of 2334900400013 uncertainties of independent yields, but must be at 2334900400014 least 25.% 2334900400015 STATUS (TABLE) Text,p.1660 of J.Inorg.Nucl.Chem.,30,1649,1968 2334900400016 (DEP,23349002) Delayed neutron yield. 2334900400017 ENDBIB 15 0 2334900400018 NOCOMMON 0 0 2334900400019 DATA 2 1 2334900400020 DATA ASSUM 2334900400021 NO-DIM PC/FIS 2334900400022 0.0008 0.34 2334900400023 ENDDATA 3 0 2334900400024 ENDSUBENT 23 0 2334900499999 SUBENT 23349005 20171030 22682334900500001 BIB 7 14 2334900500002 REACTION (51-SB-135(0,B-)52-TE-135,,PN,,,DERIV) 2334900500003 DECAY-DATA (51-SB-135,1.696SEC) 1.696+-0.021 sec measured 2334900500004 ANALYSIS Pn value was calculated as measured delayed neutron 2334900500005 yield ( weighted avarage of electrolitical on chemical 2334900500006 methods) divided by the independent fission yield 2334900500007 0.44 % for Sb-135 from rel.ref. 2334900500008 ASSUMED (ASSUM,92-U-235(N,F)51-SB-135,IND,FY) 2334900500009 REL-REF (R,,L.E.Weaver+,R,USNRDL-TR-633,1963) 2334900500010 Ref. for ASSUM 2334900500011 ERR-ANALYS (DATA-ERR,25.) Errors can not estimated because of 2334900500012 uncertainties of independent yields, but must be at 2334900500013 least 25.% 2334900500014 STATUS (TABLE) Text,p.1660 of J.Inorg.Nucl.Chem.,30,1649,1968 2334900500015 (DEP,23349002) Delayed neutron yield. 2334900500016 ENDBIB 14 0 2334900500017 NOCOMMON 0 0 2334900500018 DATA 2 1 2334900500019 DATA ASSUM 2334900500020 NO-DIM PC/FIS 2334900500021 0.08 0.44 2334900500022 ENDDATA 3 0 2334900500023 ENDSUBENT 22 0 2334900599999 ENDENTRY 5 0 2334999999999