ENTRY 41731 20210125 41924173100000001 SUBENT 41731001 20210125 41924173100100001 BIB 11 18 4173100100002 TITLE Experimental determination of delayed neutron group 4173100100003 yields from thermal fission of 233U and 235U 4173100100004 AUTHOR (A.N.Gudkov,V.M.Zhivun,V.V.Kovalenko,A.B.Koldobsky, 4173100100005 S.V.Krivasheev) 4173100100006 REFERENCE ((J,YK,,(2),56,1986)= 4173100100007 (R,INDC(CCP)-260,56,1986)) In Russian 4173100100008 INSTITUTE (4RUSMIF) 4173100100009 SAMPLE Samples of ~1 microgram in polyethylene containers 4173100100010 FACILITY (REAC,4RUSMIF) IRT-2000 reactor 4173100100011 INC-SOURCE (REAC) 4173100100012 INC-SPECT Thermal neutron flux 4.10**13 n/(cm2*sec) 4173100100013 METHOD (ACTIV,GSPEC) 16 cycles of irradiation and counting for4173100100014 each sample. Cycle time 640 sec, measurement time not 4173100100015 less than 580 sec. 4173100100016 DETECTOR (PROPC) 14 SNM-11 counters for delayed neutron 4173100100017 detection. Radiometer efficiency 7.01+-0.64 %. 4173100100018 (GELI) For counting of fission events. 4173100100019 HISTORY (20210125C) M.M. 4173100100020 ENDBIB 18 0 4173100100021 COMMON 1 3 4173100100022 EN-DUMMY 4173100100023 EV 4173100100024 0.0253 4173100100025 ENDCOMMON 3 0 4173100100026 ENDSUBENT 25 0 4173100199999 SUBENT 41731002 20210125 41924173100200001 BIB 5 12 4173100200002 REACTION (92-U-235(N,F),DL/GRP,NU,,SPA) 4173100200003 MONITOR (92-U-235(N,F),DL,NU) For absolute efficiency of 4173100200004 delayed neutron radiometer. 4173100200005 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 4173100200006 article. 4173100200007 REL-REF (A,,V.M.Sluchevskaya+,J,YK,,(3/38),29,1980) = 4173100200008 (A,,V.M.Sluchevskaya+,R,INDC(CCP)-156,29,1980) 4173100200009 Review of experiments and recom. data. 4173100200010 STATUS (TABLE) Table 1 of INDC(CCP)-260,56,1986 4173100200011 (COREL,41730002) In 41730.002 U-235 sample of 4173100200012 2.08+-0.01 microgram was measured for normalization 4173100200013 purpose, together with Th-229 sample. 4173100200014 ENDBIB 12 0 4173100200015 COMMON 2 3 4173100200016 MONIT MONIT-ERR 4173100200017 PC/FIS PC/FIS 4173100200018 1.65 0.08 4173100200019 ENDCOMMON 3 0 4173100200020 DATA 5 6 4173100200021 GRP-NUM DCNST DCNST-ERR DATA DATA-ERR 4173100200022 NO-DIM 1/SEC 1/SEC PC/FIS PC/FIS 4173100200023 1. 0.0120 0.0008 0.033 0.006 4173100200024 2. 0.0307 0.0004 0.299 0.020 4173100200025 3. 0.107 0.005 0.312 0.022 4173100200026 4. 0.306 0.014 0.605 0.045 4173100200027 5. 1.17 0.43 0.26 0.09 4173100200028 6. 3.0 2.0 0.14 0.11 4173100200029 ENDDATA 8 0 4173100200030 ENDSUBENT 29 0 4173100299999 SUBENT 41731003 20210125 41924173100300001 BIB 4 9 4173100300002 REACTION (92-U-233(N,F),DL/GRP,NU,,SPA) 4173100300003 ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 4173100300004 article. 4173100300005 REL-REF (A,,V.M.Sluchevskaya+,J,YK,,(3/38),29,1980) = 4173100300006 (A,,V.M.Sluchevskaya+,R,INDC(CCP)-156,29,1980) 4173100300007 Review of experiments and recom. data. 4173100300008 STATUS (TABLE) Table 1 of INDC(CCP)-260,56,1986 4173100300009 (DEP,41731002) U-235 delayed neutron groups measured 4173100300010 for normalization purpose. 4173100300011 ENDBIB 9 0 4173100300012 COMMON 1 3 4173100300013 MONIT 4173100300014 PC/FIS 4173100300015 1.65 4173100300016 ENDCOMMON 3 0 4173100300017 DATA 5 5 4173100300018 GRP-NUM DCNST DCNST-ERR DATA DATA-ERR 4173100300019 NO-DIM 1/SEC 1/SEC PC/FIS PC/FIS 4173100300020 1. 0.0123 0.0004 0.042 0.005 4173100300021 2. 0.0338 0.0002 0.222 0.025 4173100300022 3. 0.142 0.004 0.158 0.021 4173100300023 4. 0.305 0.017 0.175 0.029 4173100300024 5. 1.24 0.49 0.03 0.02 4173100300025 ENDDATA 7 0 4173100300026 ENDSUBENT 25 0 4173100399999 ENDENTRY 3 0 4173199999999