ENTRY 41730 20210118 41924173000000001 SUBENT 41730001 20210118 41924173000100001 BIB 11 18 4173000100002 TITLE Delayed neutron yields for thermal neutron-induced 4173000100003 fission of 229Th 4173000100004 AUTHOR (A.N.Gudkov,A.B.Koldobsky,S.V.Krivasheev,N.A.Lebedev, 4173000100005 V.A.Pchelin) 4173000100006 REFERENCE (J,YF,49,1551,1989) Issue 6. 4173000100007 (J,SNP,49,960,1989) Engl.translation 4173000100008 INSTITUTE (4RUSMIF) 4173000100009 FACILITY (REAC,4RUSMIF) IRT reactor 4173000100010 INC-SOURCE (REAC) 4173000100011 INC-SPECT Thermal neutron flux ~2.10**13 n/(cm2*sec) at the 4173000100012 sample position. 4173000100013 METHOD (ACTIV,GSPEC) Ten cycles of irradiation and counting. 4173000100014 REL-REF (M,41731001,A.N.Gudkov+,J,YK,,(2),56,1986) = 4173000100015 (M,41731001,A.N.Gudkov+,R,INDC(CCP)-260,56,1986) 4173000100016 Method details. Decay constant values for U-235 groups.4173000100017 DETECTOR (PROPC) 14 SNM-11 counters for delayed neutron 4173000100018 detection. 4173000100019 HISTORY (20210122C) M.M. 4173000100020 ENDBIB 18 0 4173000100021 COMMON 1 3 4173000100022 EN-DUMMY 4173000100023 EV 4173000100024 0.0253 4173000100025 ENDCOMMON 3 0 4173000100026 ENDSUBENT 25 0 4173000199999 SUBENT 41730002 20210118 41924173000200001 BIB 7 17 4173000200002 REACTION (92-U-235(N,F),DL/GRP,NU,,SPA) 4173000200003 SAMPLE U-235 2.08+-0.01 microgram. 4173000200004 MONITOR (92-U-235(N,F),DL,NU) Delayed neutron yield without 4173000200005 contribution of 6th group. Total (1.65+-0.08) DN yield 4173000200006 from REL-REF of V.M.Sluchevskaya+. 4173000200007 ERR-ANALYS (DATA-ERR) Correlations of delayed neutron decay curves4173000200008 parameters were taken into account. 4173000200009 COMMENT Of compiler M.M. Decay constant values are not given in4173000200010 the article, were added by compiler from REL-REF of 4173000200011 A.N.Gudkov+,J.Yad.Konst.,is.2,p.56,1986(=INDC(CCP)-260)4173000200012 REL-REF (A,,V.M.Sluchevskaya+,J,YK,,(3/38),29,1980) = 4173000200013 (A,,V.M.Sluchevskaya+,R,INDC(CCP)-156,29,1980) 4173000200014 Review of experiments and recom. data. 4173000200015 STATUS (TABLE) Table 2 of Yad.Fiz.,v.49,is.6,p.1551,1989 4173000200016 (COREL,41731002) In 41731.002 U-235 sample of 4173000200017 ~1 microgram was measured for normalization purpose, 4173000200018 together with U-233 sample. 4173000200019 ENDBIB 17 0 4173000200020 COMMON 1 3 4173000200021 MONIT 4173000200022 PC/FIS 4173000200023 1.58 4173000200024 ENDCOMMON 3 0 4173000200025 DATA 3 5 4173000200026 DCNST DATA DATA-ERR 4173000200027 1/SEC PC/FIS PC/FIS 4173000200028 0.0120 0.057 0.004 4173000200029 0.0307 0.377 0.020 4173000200030 0.107 0.321 0.016 4173000200031 0.306 0.644 0.036 4173000200032 1.17 0.180 0.029 4173000200033 ENDDATA 7 0 4173000200034 ENDSUBENT 33 0 4173000299999 SUBENT 41730003 20210118 41924173000300001 BIB 7 14 4173000300002 REACTION (90-TH-229(N,F),DL/GRP,NU,,SPA) 4173000300003 SAMPLE Th-229 50.2+-0.7 microgram in a quartz glass ampule, 4173000300004 determined by gamma-spectrometry. 4173000300005 MONITOR (90-TH-229(N,F),DL,NU) Delayed neutron yield without 4173000300006 contribution of 6th group. Total (1.81+-0.58) DN 4173000300007 yield from REL-REF of T.R.England+ 4173000300008 REL-REF (R,,T.R.England+,R,LA-UR-83-3531,1983) 4173000300009 ERR-ANALYS (DATA-ERR) Correlations of delayed neutron decay curves4173000300010 parameters were taken into account. 4173000300011 COMMENT Of compiler M.M. Decay constant values are not given in4173000300012 the article. 4173000300013 STATUS (TABLE) Table 3 of Yad.Fiz.,v.49,is.6,p.1551,1989 4173000300014 (DEP,41730002) U-235 delayed neutron yields measured 4173000300015 for normalization purpose. 4173000300016 ENDBIB 14 0 4173000300017 COMMON 2 3 4173000300018 MONIT MONIT-ERR 4173000300019 PC/FIS PC/FIS 4173000300020 1.73 0.13 4173000300021 ENDCOMMON 3 0 4173000300022 DATA 3 5 4173000300023 GRP-NUM DATA DATA-ERR 4173000300024 NO-DIM PC/FIS PC/FIS 4173000300025 1. 0.198 0.016 4173000300026 2. 0.591 0.045 4173000300027 3. 0.410 0.031 4173000300028 4. 0.430 0.034 4173000300029 5. 0.102 0.025 4173000300030 ENDDATA 7 0 4173000300031 ENDSUBENT 30 0 4173000399999 ENDENTRY 3 0 4173099999999