ENTRY 31832 20201103 31983183200000001 SUBENT 31832001 20201103 31983183200100001 BIB 11 39 3183200100002 TITLE Fission cross sections of 235U and 238U to neutrons 3183200100003 with an energy of 14.7 MeV 3183200100004 AUTHOR (I.D.Alkhazov, V.N.Dushin, S.S.Kovalenko, 3183200100005 O.I.Kostochkin, K.A.Petrzhak, V.I.Shpakov, R.Arlt, 3183200100006 V.Wagner, F.Weidhaas, V.Grimm, R.Krause, G.Musiol, 3183200100007 H.Ortlepp, R.Teichner) 3183200100008 INSTITUTE (4RUSRI ,3DDRTUD) 3183200100009 REFERENCE (J,SJA,47,1040,1979) 3183200100010 (J,AE,47,416,1979) Russ. original of J,SJA,47,1040,19793183200100011 (P,ZFK-385,18,1979) 3183200100012 Same 238U(n,f) value given 3183200100013 ((S,ZFK-382,180,1979)=(S,INDC(GDR)-9,180,1979)) 3183200100014 Same 235U(n,f) and 238U(n,f) values given 3183200100015 ((S,ZFK-376,129,1978)=(S,INDC(GDR)-10,129,1978)) 3183200100016 Same 235U(n,f) value given 3183200100017 (J,KE,21,292,1978) 3183200100018 Same 235U(n,f) value given 3183200100019 ((P,ZFK-350,10,1978)=(P,INDC(GDR)-7,10,1978)) 3183200100020 Same 235U(n,f) value given 3183200100021 REL-REF (N,,R.Arlt+,P,INDC(GDR)-12,9,1980) 3183200100022 Summary of two works done at TU Dresden in Table 1: 3183200100023 First work: 2.073(23) b for 235U, 1.194(22) b for 238U3183200100024 This work: 2.085(23) b for 235U, 1.166(21) b for 238U3183200100025 The results of the "first work" are in this entry 3183200100026 (31832). The results of "This work" are published 3183200100027 several times (S.S.Kovalenko+,J,IP,21,344,1985) 3183200100028 without changes, and the following values in K.Merla+,3183200100029 C,91JUELIC,,510,1991 are their final values: 3183200100030 2.096(24) b for 235U, 1.228(26) b for 238U3183200100031 which are in EXFOR 22304.006 and 22304.007. 3183200100032 FACILITY (CCW,3DDRTUD) 3183200100033 INC-SOURCE (D-T) Ed=130 keV emitted to 13 deg w.r.t deuteron beam 3183200100034 DETECTOR (SCIN) NE-102 (0.1 mm thick) plastic scintillator for 3183200100035 alpha detection 3183200100036 (FISCH) 3183200100037 METHOD (ASSOP) Detection of fission fragments and alphas 3183200100038 ADD-RES 238U(n,f)/235U(n,f)=0.576+/-0.012 (Ratio of the 3183200100039 absolute cross sections compiled in 002 and 003) 3183200100040 HISTORY (20201103C) On 3183200100041 ENDBIB 39 0 3183200100042 NOCOMMON 0 0 3183200100043 ENDSUBENT 42 0 3183200199999 SUBENT 31832002 20201103 31983183200200001 BIB 6 22 3183200200002 REACTION (92-U-235(N,F),,SIG) 3183200200003 DECAY-DATA (92-U-235-G,7.0381E+08YR,A) 3183200200004 Number of nuclei determined by alpha activity. 3183200200005 SAMPLE Mean thickness of active layer: 256.7 ug/cm2. 3183200200006 Isotopes other than 235U did not exceed 0.01%. 3183200200007 CORRECTION Corrected for 3183200200008 - random coincidence (-2.81%) 3183200200009 - extrapolation to zero energy of fragment (+0.59%) 3183200200010 - fragmnet losses in layer ( 0.00%) 3183200200011 - neutron scattering and absorption (+2.24%) 3183200200012 ERR-ANALYS (ERR-T) Total error (1.1%)3183200200013 (ERR-1) target weighing (0.75%)3183200200014 (ERR-2) nonuniformity of target (0.50%)3183200200015 (ERR-S) statistics of coincidences (0.46%)3183200200016 (ERR-3) random coincidence (0.08%)3183200200017 (ERR-4) extrapolation to zero energy of fragment(0.04%)3183200200018 (ERR-5) fragment losses in layer (0.20%)3183200200019 (ERR-6) scattering and absorption of neutrons (0.20%)3183200200020 STATUS (TABLE) Tables 1+2 of Sov.J.Atom.Energy 47(1979)1040. 3183200200021 This cross section was initially compiled in 30475.0023183200200022 (COREL,22304006) Final result from another work. 3183200200023 See also Table 1 of N.R.Arlt+,R,INDC(GDR)-12,9,1980. 3183200200024 ENDBIB 22 0 3183200200025 COMMON 6 3 3183200200026 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3183200200027 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3183200200028 0.75 0.50 0.08 0.04 0.20 0.20 3183200200029 ENDCOMMON 3 0 3183200200030 DATA 5 1 3183200200031 EN EN-RSL-HW DATA ERR-T ERR-S 3183200200032 MEV MEV B PER-CENT PER-CENT 3183200200033 14.71 0.15 2.073 1.1 0.46 3183200200034 ENDDATA 3 0 3183200200035 ENDSUBENT 34 0 3183200299999 SUBENT 31832003 20201103 31983183200300001 BIB 6 22 3183200300002 REACTION (92-U-238(N,F),,SIG) 3183200300003 DECAY-DATA (92-U-238,4.4683E+09YR,A) 3183200300004 Number of nuclei determined by alpha activity. 3183200300005 SAMPLE Mean thickness of active layer: 386.3 ug/cm2. 3183200300006 Isotopes other than 235U did not exceed 0.01%. 3183200300007 CORRECTION Corrected for 3183200300008 - nonuniformity of target (5.0%) 3183200300009 - random coincidence (-1.92%) 3183200300010 - extrapolatin to zero energy of fragment (+0.84%) 3183200300011 - fragmnet losses in layer (+0.27%) 3183200300012 - neutron scattering and absorption (+2.28%) 3183200300013 ERR-ANALYS (ERR-T) Total error (1.8%)3183200300014 (ERR-1) target weighing (0.75%)3183200300015 (ERR-2) nonuniformity of target (1.50%)3183200300016 (ERR-S) statistics of coincidences (0.48%)3183200300017 (ERR-3) random coincidence (0.12%)3183200300018 (ERR-4) extrapolation to zero energy of fragment(0.09%)3183200300019 (ERR-5) fragment losses in layer (0.20%)3183200300020 (ERR-6) scattering and absorption of neutrons (0.20%)3183200300021 STATUS (TABLE) Tables 1+2 of Sov.J.Atom.Energy 47(1979)1040. 3183200300022 (COREL,22304007) Final result from another work. 3183200300023 See also Table 1 of N.R.Arlt+,R,INDC(GDR)-12,9,1980. 3183200300024 ENDBIB 22 0 3183200300025 COMMON 6 3 3183200300026 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3183200300027 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3183200300028 0.75 1.50 0.12 0.09 0.20 0.20 3183200300029 ENDCOMMON 3 0 3183200300030 DATA 5 1 3183200300031 EN EN-RSL-HW DATA ERR-T ERR-S 3183200300032 MEV MEV B PER-CENT PER-CENT 3183200300033 14.71 0.15 1.194 1.8 0.48 3183200300034 ENDDATA 3 0 3183200300035 ENDSUBENT 34 0 3183200399999 ENDENTRY 3 0 3183299999999