ENTRY 40875 20220923 42084087500000001 SUBENT 40875001 20220923 42084087500100001 BIB 10 49 4087500100002 TITLE Absolute measurements of the prompt neutron spectrum 4087500100003 produced by spontaneous fission of Cf-252 in the 4087500100004 low-energy region 4087500100005 AUTHOR (P.P.Dyachenko,E.A.Seregina,L.S.Kutsaeva,A.Lajtai, 4087500100006 V.N.Kononov,P.A.Androsenko,A.A.Androsenko) 4087500100007 REFERENCE (R,INDC(CCP)-293,5,1989) Subents 002,003 data. 4087500100008 English transl. of YK,,(3),3,1985. 4087500100009 ((J,YK,,(3),3,1985)=(R,INDC(CCP)-252,3,1985)) 4087500100010 ((C,83KIEV,2,197,1983)= 4087500100011 (R,INDC(CCP)-235,(2),197,1983)) 4087500100012 INSTITUTE (4RUSFEI) All except A.Lajtai 4087500100013 (3HUNKFI) A.Lajtai 4087500100014 METHOD (TOF) Flight base is ( 30+-0.1 ) cm 4087500100015 (1.523+-0.015)E10**10 fission events for each of 4087500100016 four arrangements: NE-912 readings, NE-912 with cone, 4087500100017 NE-913, and NE-913 with cone (brass, 12 cm). 4087500100018 DETECTOR (FISCH) For fission fragments 4087500100019 (GLASD) Lithium-glass detector for neutrons 4087500100020 NE-912 (45 mm diameter, 9.5 mm thickness, 4087500100021 Li-6 containing) 4087500100022 or NE-913 (same dimensions, Li-7 containing) 4087500100023 - to measure background of delayed gammas. 4087500100024 Solid angle of neutron detection (0.0176 +- 0.0002) sr4087500100025 Measurements of the efficiency of the NE-912 glass 4087500100026 were performed with reference to the 0.0835 cm NE-908 4087500100027 glass. 4087500100028 (SCIN) Stilbene scintillation detector - to measure 4087500100029 response function of fast channels for fission gamma 4087500100030 rays and gamma-gamma coincidences from Co-60 in 4087500100031 fission fragment and neutron channels, respectively. 4087500100032 SAMPLE Cf-252 source of 1.E4 fissions per sec, 6 mm diameter.4087500100033 CORRECTION For backgrounds, for coincidences, for deviation of 4087500100034 real response function of spectrometer from 4087500100035 delta-function by using theoretical efficiency of 4087500100036 neutron detection (by Monte-Carlo method calculation).4087500100037 PART-DET (FF,N) 4087500100038 HISTORY (19851030C) Compiled In CJD 4087500100039 (19860901A) New Subentry with corrected data introduced4087500100040 (19870421U) REACTION code in SAN 003 corrected 4087500100041 according to Memo 4C-3/308. 4087500100042 (20100810A) Ref. R,INDC was added. 4087500100043 BIB information was added. 4087500100044 (20160603U) SD: Ref. YK,1985,(3),3,1985 added. Title 4087500100045 and list of authors update following INDC(CCP)-293,5. 4087500100046 (20170710U) M.M. Previous correction of SD was 4087500100047 checked at CJD. 4087500100048 J,YK,1985,(3),3,1985 -> J,YK,,(3),3,1985 . 4087500100049 Ref. INDC(CCP)-235,2,197,1983 was added. 4087500100050 (20220923A) Code SPSDD was added in STATUS. 4087500100051 ENDBIB 49 0 4087500100052 NOCOMMON 0 0 4087500100053 ENDSUBENT 52 0 4087500199999 SUBENT 40875002 20220923 42084087500200001 BIB 7 31 4087500200002 REACTION (98-CF-252(0,F),PR,NU/DE,,FCT) Spectrum measured in 4087500200003 neutrons per fission per MeV*steradian; 4087500200004 factor = 1/(4*PI). 4087500200005 ANALYSIS Efficiency of NE-908 glass was calculated with 4087500200006 BRAND program. 4087500200007 REL-REF (N,,P.A.Androsenko+,R,FEI-1300,1982) 4087500200008 BRAND code with Monte Carlo method. 4087500200009 MISC-COL (MISC) Neutron detector NE-912 efficiency 4087500200010 MISC-ERR - absolute error of detector efficiency, 4087500200011 from Table 2 of C,83KIEV,2,197,1983. 4087500200012 ERR-ANALYS (ERR-T) Total error includes: 4087500200013 (ERR-S) Statistical error. 4087500200014 (ERR-1) Error of correction for response function 4087500200015 deviation. 4087500200016 (ERR-2) Error in solid angle, defined by accuracy of 4087500200017 flight path determination and diameter of Li glass. 4087500200018 (ERR-3) - relative error of detector efficiency, 4087500200019 from Table of INDC(CCP)-0293. 4087500200020 (ERR-4) 4087500200021 STATUS (TABLE) Table of R,INDC(CCP)-0293,1989. 4087500200022 Table 2 of C,83KIEV,2,197,1983 . 4087500200023 (SPSDD,41158002) Final publication 4087500200024 HISTORY (20100810A) Reaction corrected: 4087500200025 ),PR,DE,N,REL -> ),PR,NU/DE,,REL . 4087500200026 ARB-UNITS -> P/FS/MEVSR . 4087500200027 Data values were multiplied by 1.E-02 . 4087500200028 COMMON and BIB information was added. 4087500200029 DATA-ERR -> ERR-T . Data point at 915.keV was added. 4087500200030 Errors were added from Table of INDC(CCP)-0293. 4087500200031 (20220923A) REL -> FCT according to a comment of 4087500200032 N.Otsuka (NDS,IAEA). 4087500200033 ENDBIB 31 0 4087500200034 COMMON 2 3 4087500200035 ERR-2 ERR-4 4087500200036 PER-CENT PER-CENT 4087500200037 2. 3. 4087500200038 ENDCOMMON 3 0 4087500200039 DATA 8 70 4087500200040 E DATA MISC MISC-ERR ERR-S ERR-1 4087500200041 ERR-3 ERR-T 4087500200042 KEV P/FS/MEVSR PER-CENT PER-CENT PER-CENT PER-CENT 4087500200043 PER-CENT PER-CENT 4087500200044 25. 3.27 E-02 1.89 0.04 13.15 0.03 4087500200045 2.94 13.56 4087500200046 35. 2.72 E-02 1.70 0.04 15.80 0.04 4087500200047 2.94 16.15 4087500200048 45. 4.34 E-02 1.53 0.03 10.14 0.03 4087500200049 2.95 10.67 4087500200050 55. 4.37 E-02 1.39 0.03 10.30 0.03 4087500200051 2.96 10.83 4087500200052 65. 4.55 E-02 1.35 0.03 9.45 0.03 4087500200053 2.96 10.02 4087500200054 75. 5.05 E-02 1.29 0.03 8.51 0.05 4087500200055 2.97 9.15 4087500200056 85. 4.80 E-02 1.29 .03 8.18 0.06 4087500200057 2.97 8.84 4087500200058 95. 5.67 E-02 1.32 .03 6.53 0.07 4087500200059 2.97 7.34 4087500200060 105. 5.67 E-02 1.34 .03 6.00 0.08 4087500200061 2.97 6.68 4087500200062 115. 6.44 E-02 1.38 .04 4.81 0.10 4087500200063 5.46 7.44 4087500200064 125. 7.35 E-02 1.40 .05 3.95 0.12 4087500200065 5.46 6.92 4087500200066 135. 7.12 E-02 1.48 .07 3.51 0.15 4087500200067 5.46 6.68 4087500200068 145. 6.86 E-02 1.58 .08 3.21 0.20 4087500200069 5.46 6.53 4087500200070 155. 7.83 E-02 1.74 .09 2.55 0.22 4087500200071 5.46 6.23 4087500200072 165. 7.72 E-02 1.94 .10 2.33 0.24 4087500200073 5.45 6.14 4087500200074 175. 7.05 E-02 2.65 .14 1.99 0.25 4087500200075 5.45 6.01 4087500200076 185. 8.39 E-02 2.02 .14 1.67 0.25 4087500200077 5.44 5.91 4087500200078 195. 7.38 E-02 3.78 .20 1.49 0.26 4087500200079 5.44 5.86 4087500200080 205. 7.12 E-02 4.58 .24 1.26 0.25 4087500200081 5.44 5.80 4087500200082 215. 8.39 E-02 5.38 .28 1.07 0.23 4087500200083 5.43 5.76 4087500200084 225. 8.02 E-02 5.40 .28 1.12 0.23 4087500200085 5.43 5.77 4087500200086 235. 7.76 E-02 6.52 .34 1.03 0.23 4087500200087 5.43 5.75 4087500200088 245. 7.83 E-02 6.54 .34 1.02 0.20 4087500200089 5.43 5.74 4087500200090 255. 8.02 E-02 5.72 .30 0.99 0.20 4087500200091 5.43 5.74 4087500200092 265. 8.95 E-02 5.00 .26 0.78 0.21 4087500200093 5.44 5.71 4087500200094 275. 8.47 E-02 5.16 .27 1.06 0.22 4087500200095 5.44 5.76 4087500200096 285. 8.35 E-02 4.54 .23 1.20 0.25 4087500200097 5.44 5.79 4087500200098 295. 9.55 E-02 3.35 .17 1.26 0.26 4087500200099 5.45 5.81 4087500200100 305. 9.21 E-02 2.97 .15 1.41 0.29 4087500200101 5.45 5.85 4087500200102 315. 9.19 E-02 2.70 .14 1.52 0.32 4087500200103 5.46 5.88 4087500200104 325. 8.64 E-02 2.69 .14 1.50 0.26 4087500200105 5.46 5.88 4087500200106 335. 9.38 E-02 2.19 .11 1.60 0.36 4087500200107 5.46 5.91 4087500200108 345. 8.88 E-02 2.04 .11 1.80 0.38 4087500200109 5.46 5.97 4087500200110 355. 9.32 E-02 1.88 .10 1.82 0.40 4087500200111 5.47 5.99 4087500200112 365. 9.14 E-02 1.89 .10 1.86 0.42 4087500200113 5.47 6.00 4087500200114 375. 9.17 E-02 1.79 .09 1.96 0.42 4087500200115 5.47 6.03 4087500200116 385. 9.40 E-02 1.62 .08 2.02 0.45 4087500200117 5.47 6.05 4087500200118 395. 9.06 E-02 1.59 .08 2.10 0.46 4087500200119 5.47 6.02 4087500200120 410. 9.70 E-02 1.48 .08 1.55 0.49 4087500200121 5.44 6.69 4087500200122 430. 9.99 E-02 1.30 .06 1.60 0.53 4087500200123 5.44 5.90 4087500200124 450. 9.43 E-02 1.28 .07 1.70 0.60 4087500200125 5.44 5.94 4087500200126 470. 9.73 E-02 1.11 .06 1.95 0.65 4087500200127 5.44 6.02 4087500200128 490. 9.39 E-02 1.00 .05 1.92 0.76 4087500200129 5.44 6.04 4087500200130 510. 9.85 E-02 0.89 .05 1.93 0.80 4087500200131 5.43 6.03 4087500200132 530. 10.14 E-02 .82 .04 1.97 0.90 4087500200133 5.43 6.05 4087500200134 550. 10.03 E-02 .76 .04 2.09 0.92 4087500200135 5.43 6.10 4087500200136 570. 9.66 E-02 .74 .04 2.17 1.05 4087500200137 5.43 6.14 4087500200138 590. 9.85 E-02 .71 .04 2.13 1.13 4087500200139 5.44 6.15 4087500200140 610. 10.10 E-02 .68 .04 2.18 1.20 4087500200141 5.44 6.18 4087500200142 630. 10.03 E-02 .65 .03 2.19 1.25 4087500200143 5.44 6.20 4087500200144 650. 10.07 E-02 .63 .03 2.28 1.32 4087500200145 5.44 6.24 4087500200146 670. 10.03 E-02 .62 .03 2.29 1.38 4087500200147 5.44 6.28 4087500200148 690. 9.99 E-02 .60 .03 2.30 1.45 4087500200149 5.44 6.28 4087500200150 710. 10.37 E-02 .56 .03 2.31 1.50 4087500200151 5.45 6.30 4087500200152 735. 10.41 E-02 .54 .03 1.92 1.57 4087500200153 5.44 6.18 4087500200154 765. 10.55 E-02 .52 .03 1.89 1.63 4087500200155 5.44 6.18 4087500200156 795. 10.22 E-02 .53 .03 1.96 1.70 4087500200157 5.45 6.23 4087500200158 825. 9.99 E-02 .54 .03 2.00 1.76 4087500200159 5.44 6.26 4087500200160 855. 9.66 E-02 .54 .03 1.97 1.80 4087500200161 5.45 6.27 4087500200162 885. 10.07 E-02 .53 .03 1.99 1.85 4087500200163 5.45 6.29 4087500200164 915. 9.73 E-02 .53 .03 2.06 1.87 4087500200165 5.45 6.32 4087500200166 945. 9.70 E-02 .53 .03 2.06 1.91 4087500200167 5.45 6.33 4087500200168 975. 9.47 E-02 .54 .03 2.01 1.96 4087500200169 5.46 6.34 4087500200170 1005. 9.51 E-02 .54 .03 2.00 2.01 4087500200171 5.46 6.35 4087500200172 1020. 9.40 E-02 .53 .03 1.81 2.01 4087500200173 5.45 6.28 4087500200174 1060. 10.03 E-02 .52 .03 1.69 1.97 4087500200175 5.45 6.24 4087500200176 1100. 10.00 E-02 .50 .03 1.80 1.90 4087500200177 5.46 6.25 4087500200178 1140. 10.07 E-02 .51 .03 1.69 1.80 4087500200179 5.46 6.19 4087500200180 1180. 9.66 E-02 .50 .03 1.76 1.80 4087500200181 5.46 6.21 4087500200182 1220. 10.00 E-02 .50 .03 1.80 1.61 4087500200183 5.46 6.17 4087500200184 ENDDATA 144 0 4087500200185 ENDSUBENT 184 0 4087500299999 SUBENT 40875003 20220923 42084087500300001 BIB 8 20 4087500300002 REACTION (98-CF-252(0,F),PR,NU/DE,,MXD) 4087500300003 ANALYSIS Efficiency of NE-908 glass was calculated with 4087500300004 BRAND program. 4087500300005 REL-REF (N,,P.A.Androsenko+,R,FEI-1300,1982) 4087500300006 BRAND code with Monte Carlo method. 4087500300007 ADD-RES Exp. data are described by Maxwellian distribution of4087500300008 T=1.42 MeV and NUprompt=3.757; deviation does not 4087500300009 exceed 5 % with some exceptions; as 4087500300010 N(E)=NUp*(2pi)**-1.5*T**-1.5*SQRT(E)*exp(-E/T). 4087500300011 REFERENCE (J,SJA,60,89,1986) Engl. translation of J,AE,60,65,19864087500300012 (J,AE,60,65,1986) Issue 1. Graph is given. 4087500300013 ERR-ANALYS (DATA-ERR) Total uncertainty 4087500300014 STATUS (APRVD) Seregina, 4087500300015 (TABLE) From author. 4087500300016 (SPSDD,41158003) Final publication 4087500300017 HISTORY (19860802R) Received from Seregina. 4087500300018 (19870421U) MXW in SF8 deleted 4087500300019 (20100810A) Reaction was corrected: 4087500300020 ((98-CF-252(0,F),PR,DE,N)/(98-CF-252(0,F),PR,DE,N)) 4087500300021 -> (98-CF-252(0,F),PR,NU/DE,,MXD) 4087500300022 ENDBIB 20 0 4087500300023 COMMON 1 3 4087500300024 KT-NRM 4087500300025 MEV 4087500300026 1.42 4087500300027 ENDCOMMON 3 0 4087500300028 DATA 3 70 4087500300029 E DATA DATA-ERR 4087500300030 KEV NO-DIM NO-DIM 4087500300031 25. 1.14 .15 4087500300032 35. .79 .12 4087500300033 45. 1.10 .12 4087500300034 55. .97 .11 4087500300035 65. .94 .10 4087500300036 75. .98 .095 4087500300037 85. .90 .084 4087500300038 95. .99 .078 4087500300039 105. .95 .083 4087500300040 115. 1.03 .083 4087500300041 125. 1.14 .087 4087500300042 135. 1.07 .078 4087500300043 145. 1.0 .073 4087500300044 155. 1.1 .077 4087500300045 165. 1.07 .074 4087500300046 175. .96 .065 4087500300047 185. 1.1 .074 4087500300048 195. .96 .064 4087500300049 205. .91 .060 4087500300050 215. 1.06 .069 4087500300051 225. .99 .066 4087500300052 235. .95 .062 4087500300053 245. .94 .061 4087500300054 255. .95 .062 4087500300055 265. 1.05 .068 4087500300056 275. .98 .065 4087500300057 285. .96 .063 4087500300058 295. 1.08 .072 4087500300059 305. 1.04 .067 4087500300060 315. 1.03 .067 4087500300061 325. .96 .063 4087500300062 335. 1.03 .069 4087500300063 345. .97 .065 4087500300064 355. 1.01 .066 4087500300065 365. .98 .066 4087500300066 375. .98 .073 4087500300067 385. 1.00 .068 4087500300068 395. .96 .065 4087500300069 410. 1.01 .068 4087500300070 430. 1.03 .069 4087500300071 450. .97 .065 4087500300072 470. .99 .067 4087500300073 490. .95 .064 4087500300074 510. .99 .067 4087500300075 530. 1.015 .068 4087500300076 550. 1.00 .068 4087500300077 570. .96 .066 4087500300078 590. .98 .067 4087500300079 610. 1.00 .068 4087500300080 630. .99 .068 4087500300081 650. .99 .068 4087500300082 670. .99 .068 4087500300083 690. .98 .068 4087500300084 710. 1.02 .070 4087500300085 735. 1.02 .069 4087500300086 765. 1.04 .070 4087500300087 795. 1.01 .068 4087500300088 825. .99 .067 4087500300089 855. .96 .064 4087500300090 885. 1.00 .067 4087500300091 915. .97 .066 4087500300092 945. .97 .066 4087500300093 975. .96 .068 4087500300094 1005. .97 .070 4087500300095 1020. .96 .064 4087500300096 1060. 1.03 .069 4087500300097 1100. 1.04 .069 4087500300098 1140. 1.055 .070 4087500300099 1180. 1.02 .067 4087500300100 1220. 1.07 .072 4087500300101 ENDDATA 72 0 4087500300102 ENDSUBENT 101 0 4087500399999 ENDENTRY 3 0 4087599999999