ENTRY 41551 20210811 41994155100000001 SUBENT 41551001 20210811 41994155100100001 BIB 10 37 4155100100002 TITLE Measuring high-energy gamma-ray emission 4155100100003 accompanying the spontaneous fission of 252Cf 4155100100004 nuclei 4155100100005 AUTHOR (N.V.Eremin,S.S.Markochev,A.A.Paskhalov,E.A.Tsvetkov, 4155100100006 G.Mandaglio, M.Manganaro, G.Fazio, G.Giargina, 4155100100007 M.V.Romaniuk) 4155100100008 INSTITUTE (4RUSMOS) N.V.Eremin, A.A.Paskhalov 4155100100009 (4RUSMFT) S.S.Markochev, E.A.Tsvetkov 4155100100010 (2ITYSIC) G.Mandaglio, M.Manganaro,G.Fazio, G.Giargina 4155100100011 (2ITYMES) G.Mandaglio, M.Manganaro,G.Fazio, G.Giargina,4155100100012 M.V.Romaniuk 4155100100013 (4UKRIJD) M.V.Romaniuk 4155100100014 REFERENCE (J,IZV,75,580,2011) Main reference. Issue 4. 4155100100015 (J,BAS,75,544,2011) Engl. transl. of J,IZV 4155100100016 #doi:10.3103/S1062873811040113 4155100100017 (J,IMP/E,19,1183,2010) Previous publication . 4155100100018 Issue 5-6. 4155100100019 PART-DET (N,G) 4155100100020 METHOD (COINC) Gammas-neutrons and gamma-gamma coincidence in 4155100100021 (TOF) combination with time-of-flight method. 4155100100022 Time of coincidence measurement - 500 hr. 4155100100023 DETECTOR (SCIN,BGO) Two scintillators : 4155100100024 - BGO crystal of 7.6 cm diameter, 7.6 cm long, 4155100100025 registration threshold 5 MeV - for gammas; 4155100100026 -polystyrene 6.0 cm diameter, 2.0 cm long - for 4155100100027 neutrons. 4155100100028 Standard sources Cs-137, Co-60, Pu(Be) were used for 4155100100029 calibration of BGO-detector. Gamma registration 4155100100030 efficiency was calculated by code GEANT4 to be about 4155100100031 35 % at 60 MeV. 4155100100032 SAMPLE Cf-252 source of 6.1E+6 n/sec activity. 4155100100033 10 cm distance between BGO-detector and Cf source. 4155100100034 CORRECTION For gamma-gamma and random coincidences. 4155100100035 For background. 4155100100036 HISTORY (20110624C) Compiled at CJD. M.M. 4155100100037 (20191221A) Reaction was corrected in Subent 002. 4155100100038 (20210811A) Subent 003 was added. 4155100100039 ENDBIB 37 0 4155100100040 NOCOMMON 0 0 4155100100041 ENDSUBENT 40 0 4155100199999 SUBENT 41551002 20210811 41994155100200001 BIB 3 8 4155100200002 REACTION (98-CF-252(0,F)0-G-0,PR,FY/DE) 4155100200003 Photon emission in spontaneous fission. 4155100200004 STATUS (TABLE)Text,p.582 of J.Izv.AN,ser.Fiz.,v.75,p.580,2011.4155100200005 HISTORY (20110928A) M.M. MSC in REACTION was added according to4155100200006 the comment of N.Otsuka (NDS, IAEA). 4155100200007 (20191221A) Correction 4155100200008 MLT/DE,,MSC with PT/FIS/MEV -> PR,FY/DE with PD/FIS/MEV4155100200009 according to a comment of N.Otsuka (NDS,IAEA) 4155100200010 ENDBIB 8 0 4155100200011 NOCOMMON 0 0 4155100200012 DATA 2 2 4155100200013 E DATA 4155100200014 MEV PD/FIS/MEV 4155100200015 20. 1.E-7 4155100200016 60. 1.E-8 4155100200017 ENDDATA 4 0 4155100200018 ENDSUBENT 17 0 4155100299999 SUBENT 41551003 20210811 41994155100300001 BIB 5 16 4155100300002 REACTION (98-CF-252(0,F)0-G-0,PR,FY/DE) 4155100300003 REL-REF (A,,J.Kasagi+,J,JPJ/S,58,620,1989) 4155100300004 (A,,Yu.N.Pokotilovskiy,J,YF,52,942,1990) 4155100300005 (A,,S.J.Luke+,J,PR/C,44,1548,1991) 4155100300006 (A,,H.Van der Ploeg+,J,PRL,68,3145,1992) 4155100300007 (A,,V.A.Varlachev+,J,ZEP,82,440,2005) 4155100300008 Agree in energy range < 20 MeV. 4155100300009 ERR-ANALYS Quantization errors: 4155100300010 scale X - 0.037 MeV, scale Y - 0.80 %. 4155100300011 (DATA-ERR) Type of uncertainty is not explained in 4155100300012 the article. 4155100300013 STATUS (CURVE) Fig.3 of J.Izv.AN,ser.Fiz.,v.75,p.580 4155100300014 =Fig.2 of Int.J.of Modern Phys.,Part E,v.19,p.1183,20104155100300015 Request for the data of Fig.3 was sent 24.06.2011 to 4155100300016 Sergey Markochev: sergey.markochev@gmail.com 4155100300017 HISTORY (20210811C) M.M. 4155100300018 ENDBIB 16 0 4155100300019 COMMON 2 3 4155100300020 E-ERR-DIG ERR-DIG 4155100300021 MEV PER-CENT 4155100300022 0.029 1.69 4155100300023 ENDCOMMON 3 0 4155100300024 DATA 3 29 4155100300025 E DATA DATA-ERR 4155100300026 MEV PD/FIS/MEV PD/FIS/MEV 4155100300027 4.393 1.76E-02 4155100300028 5.501 7.30E-03 4155100300029 6.608 3.50E-03 4155100300030 7.643 1.25E-03 4155100300031 8.603 5.60E-04 4155100300032 9.637 2.16E-04 4155100300033 10.525 5.16E-05 4155100300034 11.559 2.39E-05 4155100300035 12.593 8.55E-06 4155100300036 13.553 3.55E-06 4155100300037 14.587 1.64E-06 6.23E-07 4155100300038 15.547 1.14E-06 4155100300039 16.506 1.27E-06 4155100300040 17.466 8.49E-07 4155100300041 18.351 5.67E-07 2.28E-07 4155100300042 19.606 3.52E-07 2.01E-07 4155100300043 20.493 1.75E-07 1.73E-07 4155100300044 21.451 2.73E-07 2.20E-07 4155100300045 22.484 3.40E-07 2.79E-07 4155100300046 23.517 2.73E-07 2.41E-07 4155100300047 24.550 2.73E-07 2.37E-07 4155100300048 26.985 1.13E-07 1.12E-07 4155100300049 30.085 6.54E-08 7.59E-08 4155100300050 35.029 1.95E-08 1.97E-08 4155100300051 39.971 4.07E-08 3.81E-08 4155100300052 45.062 2.53E-08 2.55E-08 4155100300053 50.006 1.46E-08 1.27E-08 4155100300054 54.948 1.83E-08 1.71E-08 4155100300055 60.040 7.05E-09 7.64E-09 4155100300056 ENDDATA 31 0 4155100300057 ENDSUBENT 56 0 4155100399999 ENDENTRY 3 0 4155199999999