ENTRY 41617 20171030 41774161700000001 SUBENT 41617001 20171030 41774161700100001 BIB 10 24 4161700100002 REFERENCE (J,SJA,16,447,1964) Engl.translation of 4161700100003 (J,AE,16,(4),368,1964) 4161700100004 AUTHOR (P.M.Aron,O.I.Kostochkin,K.A.Petrzhak,V.I.Shpakov) 4161700100005 TITLE Probability of delayed neutron emission from halogens. 4161700100006 INSTITUTE (4RUSRUS) 4161700100007 METHOD (CHSEP) Br and I precursors were separated chemically 4161700100008 from fission products of U-238 and Th-232 irradiated 4161700100009 by 14-MeV neutrons. 4161700100010 (COINC) Beta and neutron was measured simultaneously. 4161700100011 PART-DET (N,B) 4161700100012 ANALYSIS Neutron and beta decay curves were analyzed to 4161700100013 determine the activity of isotopes. Probability of 4161700100014 delayed neutrons was defined as ratio of the neutron 4161700100015 activity to the beta-activity of the same amount of 4161700100016 the investigated isotope. 4161700100017 DETECTOR (BF3) Neutron detector consists of six boron counters 4161700100018 in paraffin block. Total efficiency 3.0+-0.2 % 4161700100019 determined by calibrated neutron sources with neutron 4161700100020 energies 50-800 keV. 4161700100021 (SCIN) Beta detectors were two 4PI scintillators 4161700100022 of 15cm3 volume, each equipped by two photomultipliers,4161700100023 placed in front and behind absorber. 4161700100024 ERR-ANALYS (DATA-ERR) Not explained clear in the article. 4161700100025 HISTORY (20171030A) M.M. 4161700100026 ENDBIB 24 0 4161700100027 NOCOMMON 0 0 4161700100028 ENDSUBENT 27 0 4161700199999 SUBENT 41617002 20171030 41774161700200001 BIB 6 12 4161700200002 REACTION (35-BR-87(0,B-)36-KR-87,,PN) 4161700200003 DECAY-DATA (35-BR-87,56.SEC) 4161700200004 METHOD Irradiation time 1 min. Counting time - several hours.4161700200005 Neutron decay curve - only HL 56 sec. 4161700200006 Beta-decay curve HLs: 4161700200007 56 sec (Br87 or Br-86), 3min (Br-85), 31min (Br-84), 4161700200008 75min (daughter Kr-87), 6.3min (br078), 20min (Br-80). 4161700200009 FLAG (1.) Precursor from U-238 fission products 4161700200010 (2.) Precursor from Th-232 fission products 4161700200011 REL-REF (D,,G.P.Kipin,J,AE,4,250,1958) 4161700200012 0.02 calculated from this ref. 4161700200013 STATUS (TABLE) Table of J,SJA,16,447,1964 4161700200014 ENDBIB 12 0 4161700200015 NOCOMMON 0 0 4161700200016 DATA 3 2 4161700200017 DATA DATA-ERR FLAG 4161700200018 NO-DIM NO-DIM NO-DIM 4161700200019 0.031 0.006 1. 4161700200020 0.031 0.006 2. 4161700200021 ENDDATA 4 0 4161700200022 ENDSUBENT 21 0 4161700299999 SUBENT 41617003 20171030 41774161700300001 BIB 7 13 4161700300002 REACTION (35-BR-88(0,B-)36-KR-88,,PN) 4161700300003 DECAY-DATA (35-BR-88,16.SEC) 4161700300004 MONITOR (35-BR-87(0,B-)36-KR-87,,PN) 4161700300005 From this work, see Subent 005 4161700300006 MONIT-REF (41617002,P.M.Aron+,J,SJA,16,447,1964) 4161700300007 FLAG (1.) Precursor from U-238 fission products 4161700300008 (2.) Precursor from Th-232 fission products 4161700300009 REL-REF (D,,G.P.Kipin,J,AE,4,250,1958) 4161700300010 0.19 calculated from this ref. 4161700300011 (A,,A.K.Pappas,C,58GENEVA,2,306,1958) 4161700300012 Moscow Atomizdat, 1959 . 4161700300013 0.05 calculated from this ref. 4161700300014 STATUS (TABLE) Table of J,SJA,16,447,1964 4161700300015 ENDBIB 13 0 4161700300016 NOCOMMON 0 0 4161700300017 DATA 3 2 4161700300018 DATA DATA-ERR FLAG 4161700300019 NO-DIM NO-DIM NO-DIM 4161700300020 0.06 0.016 1. 4161700300021 0.06 0.016 2. 4161700300022 ENDDATA 4 0 4161700300023 ENDSUBENT 22 0 4161700399999 SUBENT 41617004 20171030 41774161700400001 BIB 7 13 4161700400002 REACTION (35-BR-89(0,B-)36-KR-89,,PN) 4161700400003 DECAY-DATA (35-BR-89,4.3SEC) 4161700400004 MONITOR (35-BR-87(0,B-)36-KR-87,,PN) 4161700400005 From this work, see Subent 005 4161700400006 MONIT-REF (41617002,P.M.Aron+,J,SJA,16,447,1964) 4161700400007 FLAG (1.) Precursor from U-238 fission products 4161700400008 (2.) Precursor from Th-232 fission products 4161700400009 REL-REF (D,,G.P.Kipin,J,AE,4,250,1958) 4161700400010 0.22 calculated from this ref. 4161700400011 (A,,A.K.Pappas,C,58GENEVA,2,306,1958) 4161700400012 Moscow Atomizdat, 1959 . 4161700400013 0.04 calculated from this ref. 4161700400014 STATUS (TABLE) Table of J,SJA,16,447,1964 4161700400015 ENDBIB 13 0 4161700400016 NOCOMMON 0 0 4161700400017 DATA 3 2 4161700400018 DATA DATA-ERR FLAG 4161700400019 NO-DIM NO-DIM NO-DIM 4161700400020 0.07 0.02 1. 4161700400021 0.07 0.02 2. 4161700400022 ENDDATA 4 0 4161700400023 ENDSUBENT 22 0 4161700499999 SUBENT 41617005 20171030 41774161700500001 BIB 6 14 4161700500002 REACTION (53-I-137(0,B-)54-XE-137,,PN) 4161700500003 DECAY-DATA (53-I-137,24.SEC) 4161700500004 METHOD Irradiation time 30sec. Counting time several hours. 4161700500005 Neutron activity curve - only HL 24 sec. 4161700500006 Beta-decay curve HLs: 4161700500007 24sec (I-137), 86sec (I-136), 3.8min (daughter Xe-137).4161700500008 FLAG (1.) Precursor from U-238 fission products 4161700500009 (2.) Precursor from Th-232 fission products 4161700500010 REL-REF (D,,G.P.Kipin,J,AE,4,250,1958) 4161700500011 0.13 calculated from this ref. 4161700500012 (A,,A.K.Pappas,C,58GENEVA,2,306,1958) 4161700500013 Moscow Atomizdat, 1959 . 4161700500014 0.02 calculated from this ref. 4161700500015 STATUS (TABLE) Table of J,SJA,16,447,1964 4161700500016 ENDBIB 14 0 4161700500017 NOCOMMON 0 0 4161700500018 DATA 3 2 4161700500019 DATA DATA-ERR FLAG 4161700500020 NO-DIM NO-DIM NO-DIM 4161700500021 0.030 0.005 1. 4161700500022 0.030 0.005 2. 4161700500023 ENDDATA 4 0 4161700500024 ENDSUBENT 23 0 4161700599999 SUBENT 41617006 20171030 41774161700600001 BIB 7 13 4161700600002 REACTION (53-I-138(0,B-)54-XE-138,,PN) 4161700600003 DECAY-DATA (53-I-138,6.3SEC) 4161700600004 MONITOR (53-I-137(0,B-)54-XE-137,,PN) 4161700600005 From this work, see Subent 005 4161700600006 MONIT-REF (41617005,P.M.Aron+,J,SJA,16,447,1964) 4161700600007 FLAG (1.) Precursor from U-238 fission products 4161700600008 (2.) Precursor from Th-232 fission products 4161700600009 REL-REF (D,,G.P.Kipin,J,AE,4,250,1958) 4161700600010 0.20 calculated from this ref. 4161700600011 (A,,A.K.Pappas,C,58GENEVA,2,306,1958) 4161700600012 Moscow Atomizdat, 1959 . 4161700600013 0.01 calculated from this ref. 4161700600014 STATUS (TABLE) Table of J,SJA,16,447,1964 4161700600015 ENDBIB 13 0 4161700600016 NOCOMMON 0 0 4161700600017 DATA 3 2 4161700600018 DATA DATA-ERR FLAG 4161700600019 NO-DIM NO-DIM NO-DIM 4161700600020 0.019 0.005 1. 4161700600021 0.021 0.005 2. 4161700600022 ENDDATA 4 0 4161700600023 ENDSUBENT 22 0 4161700699999 ENDENTRY 6 0 4161799999999