ENTRY 41300 20240724 42184130000000001 SUBENT 41300001 20240724 42184130000100001 BIB 12 48 4130000100002 TITLE Measurements of the energy dependence of the relative 4130000100003 delayed neutron yields related to individual 4130000100004 precursors from neutron-induced fission of 237Np 4130000100005 AUTHOR (S.G.Isaev,V.M.Piksaykin,L.E.Kazakov,M.Z.Tarasko) 4130000100006 INSTITUTE (4RUSFEI) 4130000100007 REFERENCE (J,YK,,(1),17,1998) Main reference,data are given. 4130000100008 In English. 4130000100009 FACILITY (VDG,4RUSFEI) Electrostatic accelerator KG-2.5 4130000100010 DETECTOR (D4PI) Boron counter SNM-11 as assemblage of 4130000100011 30 counters distributed in polyethylene moderator - 4130000100012 for neutron detection. Energy dependence of detector 4130000100013 efficiency is calculated by Monte-Carlo method 4130000100014 (SOLST) Semiconductor surface-barrier detector for 4130000100015 Cf-252 fission events detection 4130000100016 (FISCH) Fission chamber for Np-237 fission events 4130000100017 detection 4130000100018 (PROPC) He-3 counter for neutron flux monitoring 4130000100019 INC-SOURCE (P-T) 4130000100020 (D-D) 4130000100021 MONITOR (98-CF-252(0,F),PR,NU) 4130000100022 (92-U-235(N,F),DL,NU) 4130000100023 METHOD (ACTIV) Cyclic irradiation and measurement 4130000100024 ERR-ANALYS (ERR-T) Total error 4130000100025 (ERR-S) Error due to fission counting statistics of 4130000100026 Np-237 4130000100027 (ERR-1) Error due to fission chamber deposit mass of 4130000100028 Np-237 4130000100029 (ERR-2) Error due to extrapolation to zero bias for 4130000100030 Np-237 4130000100031 (ERR-3) Error due to sample mass of Np-237 4130000100032 (ERR-4) Error due to delayed neutron counting 4130000100033 statistical error for Np 4130000100034 (ERR-5) Error due to background (two chamber geometry 4130000100035 for Np-237 4130000100036 (ERR-6) Statistical error caused by delayed neutrons 4130000100037 counts to fission fragments counts ratio 4130000100038 COMMENT This work was made under RFBR research grant 4130000100039 #96-02-17439. 4130000100040 HISTORY (19980925C) + + Compiled at the CJD + + 4130000100041 (19990319A) * * Corrected at CJD. 4130000100042 4-digit dates introduced 4130000100043 (20140721A) M.M. Upper -> lower case correction. 4130000100044 BIB information was updated. 4130000100045 Correction according to memo CP-D/777. 4130000100046 (20191112U) Ref. YK was corrected. 4130000100047 (20210414A) REACTION in Subent 002 was corrected 4130000100048 (20240724A) Subent 002 was corrected. 4130000100049 STATUS was updated for new rules. 4130000100050 ENDBIB 48 0 4130000100051 COMMON 8 6 4130000100052 E-LVL ERR-S ERR-1 ERR-2 ERR-3 ERR-4 4130000100053 ERR-5 ERR-6 4130000100054 EV PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 4130000100055 PER-CENT PER-CENT 4130000100056 0. 0.01 0.7 0.6 0.05 0.01 4130000100057 0.1 0.6 4130000100058 ENDCOMMON 6 0 4130000100059 ENDSUBENT 58 0 4130000199999 SUBENT 41300002 20240724 42184130000200001 BIB 7 49 4130000200002 REACTION ((93-NP-237(N,F),DL/GRP,NU)/ 4130000200003 (93-NP-237(N,F),DL,NU)) Relative 4130000200004 delayed neutrons yield from 8 individual precursors 4130000200005 and 4 groups of precursors. 4130000200006 RESULT (DFRCT) 4130000200007 SAMPLE NpO(2) oxide powder, density 7 g/cm3, packed in 4130000200008 stainless-steel capsule placed in titanium container. 4130000200009 Sample weight is 2.2810 gram 4130000200010 DECAY-DATA Individual precursors: 4130000200011 (35-BR-87,55.69SEC) 4130000200012 (35-BR-88,16.3SEC) 4130000200013 (35-BR-89,4.38SEC) 4130000200014 (35-BR-91,0.542SEC) 4130000200015 (36-KR-93,1.289SEC) 4130000200016 (37-RB-94,2.76SEC) 4130000200017 (37-RB-95,0.384SEC) 4130000200018 (53-I-137,24.5SEC) 4130000200019 Precursors combined in groups with effective HL: 4130000200020 6.37SEC : 4130000200021 (53-I-138,6.46SEC) 4130000200022 (37-RB-93,5.93SEC) 4130000200023 2.09SEC : 4130000200024 (53-I-139,2.3SEC) 4130000200025 (33-AS-85,2.08SEC) 4130000200026 (39-Y-98-M,2.0SEC) 4130000200027 0.195SEC : 4130000200028 (37-RB-96,0.203SEC) 4130000200029 (37-RB-97,0.17SEC) 4130000200030 0.942SEC : 4130000200031 (55-CS-144,1.002SEC) 4130000200032 (53-I-140,0.86SEC) 4130000200033 ERR-ANALYS (EN-ERR) Standard deviations in incident neutron energy4130000200034 STATUS (TABLE,,S.G.Isaev,J,YK,,(1),17,1998) Data from Table 2 4130000200035 (COREL,41322002) 6-group expression of data from the 4130000200036 same measurement. 4130000200037 HISTORY (19990319A) Reaction coding changed 4130000200038 (20140721A) GRP code was deleted from SF5 of REACTION 4130000200039 according to comment of N.Otsuka (NDS,IAEA). 4130000200040 HALF-LIFE values were moved in DECAY-DATA. 4130000200041 (20191112U) IND was added in reaction denominator 4130000200042 (20210414A) REACTION was corrected: 4130000200043 )ELEM/MASS,DL,NU) -> ),DL/GRP,NU)( first term); 4130000200044 DL/IND -> DL (second term). 4130000200045 ELEMENT, MASS, ISOMER were deleted from DATA block, 4130000200046 they are given in DECAY-DATA for specified half-life. 4130000200047 (20240724A) ERR-T : 0.000 -> 0.0010 at EN=4.719 MeV 4130000200048 ( taking into account ERR-T values at neighbouring 4130000200049 points - 0.0059+-0.0011, 0.0052+-0.0009; one digit 4130000200050 was lost at the right side of this table). 4130000200051 ENDBIB 49 0 4130000200052 NOCOMMON 0 0 4130000200053 DATA 5 60 4130000200054 EN EN-ERR HL DATA ERR-T 4130000200055 MEV MEV SEC NO-DIM NO-DIM 4130000200056 0.586 0.078 0.195 0.022 0.004 4130000200057 0.586 0.078 0.384 0.073 0.017 4130000200058 0.586 0.078 0.542 0.018 0.003 4130000200059 0.586 0.078 0.942 0.013 0.002 4130000200060 0.586 0.078 1.289 0.0044 0.0008 4130000200061 0.586 0.078 2.09 0.257 0.012 4130000200062 0.586 0.078 2.76 0.129 0.012 4130000200063 0.586 0.078 4.38 0.090 0.007 4130000200064 0.586 0.078 6.37 0.075 0.004 4130000200065 0.586 0.078 16.3 0.105 0.005 4130000200066 0.586 0.078 24.5 0.185 0.006 4130000200067 0.586 0.078 55.69 0.030 0.001 4130000200068 1.008 0.099 0.195 0.023 0.004 4130000200069 1.008 0.099 0.384 0.077 0.017 4130000200070 1.008 0.099 0.542 0.019 0.004 4130000200071 1.008 0.099 0.942 0.013 0.002 4130000200072 1.008 0.099 1.289 0.0046 0.0008 4130000200073 1.008 0.099 2.09 0.257 0.011 4130000200074 1.008 0.099 2.76 0.129 0.012 4130000200075 1.008 0.099 4.38 0.092 0.007 4130000200076 1.008 0.099 6.37 0.079 0.003 4130000200077 1.008 0.099 16.3 0.101 0.005 4130000200078 1.008 0.099 24.5 0.176 0.005 4130000200079 1.008 0.099 55.69 0.031 0.001 4130000200080 3.745 0.144 0.195 0.026 0.005 4130000200081 3.745 0.144 0.384 0.091 0.020 4130000200082 3.745 0.144 0.542 0.021 0.004 4130000200083 3.745 0.144 0.942 0.015 0.003 4130000200084 3.745 0.144 1.289 0.0052 0.0009 4130000200085 3.745 0.144 2.09 0.261 0.011 4130000200086 3.745 0.144 2.76 0.130 0.012 4130000200087 3.745 0.144 4.38 0.094 0.007 4130000200088 3.745 0.144 6.37 0.083 0.003 4130000200089 3.745 0.144 16.3 0.085 0.004 4130000200090 3.745 0.144 24.5 0.153 0.005 4130000200091 3.745 0.144 55.69 0.035 0.001 4130000200092 4.196 0.169 0.195 0.029 0.005 4130000200093 4.196 0.169 0.384 0.088 0.020 4130000200094 4.196 0.169 0.542 0.024 0.005 4130000200095 4.196 0.169 0.942 0.017 0.003 4130000200096 4.196 0.169 1.289 0.0059 0.0011 4130000200097 4.196 0.169 2.09 0.254 0.011 4130000200098 4.196 0.169 2.76 0.140 0.013 4130000200099 4.196 0.169 4.38 0.095 0.007 4130000200100 4.196 0.169 6.37 0.070 0.003 4130000200101 4.196 0.169 16.3 0.112 0.005 4130000200102 4.196 0.169 24.5 0.126 0.004 4130000200103 4.196 0.169 55.69 0.040 0.001 4130000200104 4.719 0.205 0.195 0.027 0.005 4130000200105 4.719 0.205 0.384 0.088 0.020 4130000200106 4.719 0.205 0.542 0.022 0.004 4130000200107 4.719 0.205 0.942 0.015 0.003 4130000200108 4.719 0.205 1.289 0.0054 0.0010 4130000200109 4.719 0.205 2.09 0.259 0.011 4130000200110 4.719 0.205 2.76 0.136 0.012 4130000200111 4.719 0.205 4.38 0.098 0.007 4130000200112 4.719 0.205 6.37 0.083 0.003 4130000200113 4.719 0.205 16.3 0.088 0.005 4130000200114 4.719 0.205 24.5 0.141 0.005 4130000200115 4.719 0.205 55.69 0.037 0.001 4130000200116 ENDDATA 62 0 4130000200117 ENDSUBENT 116 0 4130000299999 ENDENTRY 2 0 4130099999999