ENTRY 23218 20220128 23102321800000001 SUBENT 23218001 20220128 23102321800100001 BIB 12 50 2321800100002 TITLE Experimental studies of prompt fission neutron energy 2321800100003 spectra. 2321800100004 AUTHOR (A.Sardet, T.Granier, B.Laurent, A.Oberstedt) 2321800100005 REFERENCE (J,PPRC,47,144,2013) Preliminary data. 2321800100006 #doi:10.1016/j.phpro.2013.06.021 2321800100007 Scientific Workshop on Nuclear Fission Dynamics and the2321800100008 Emission of Prompt Neutrons and Gamma Rays, Biarritz, 2321800100009 France, 28-30 November 2012. 2321800100010 INSTITUTE (2FR BRC) 2321800100011 FACILITY (VDG,2FR BRC) 2321800100012 METHOD (TOF) 2321800100013 INC-SOURCE (D-D) 2321800100014 INC-SPECT Quasi-monoenergetic neutrons. 2321800100015 DETECTOR (FISCH) Ionization chambers filled with P10 gas (10% 2321800100016 methane, 90% argon) and containing several tens of 2321800100017 parallel plate electrodes on which the actinides sample2321800100018 was deposited. For fission fragments detection. 2321800100019 (SCIN) The neutron detector was manufactured by 2321800100020 Cryos-Beta and consists of an organic crystal of doped 2321800100021 p-terphenyl C(18)H(14) coupled to a photomultiplier 2321800100022 Photonis XP53X2). The crystal is a cylinder of 75 mm 2321800100023 diameter, 500 mm length, density of 1.23 g/cm3. 2321800100024 The energy resolution of the detector was determined 2321800100025 using gamma-sources in an energy range from 59.5 to 2321800100026 1836 keV. For 137Cs (662 keV) about 10% (FWHM) was 2321800100027 obtained. The energy calibration for gamma-rays was 2321800100028 carried out by using the gamma-sources mentioned. 2321800100029 Energy calibration for neutrons the detector was 2321800100030 irradiated with spontaneous fission neutrons from 2321800100031 a 252Cf source. A TOF spectrum was recorded and 2321800100032 converted into energy. 2321800100033 The total neutron efficiency consists of two 2321800100034 components: 2321800100035 a) the geometric acceptance corresponding to the solid2321800100036 angle - (2.73+-0.29)*10**-4, 2321800100037 b) an intrinsic component, which is a function of the 2321800100038 detected neutron energy, was determined by a PFNS 2321800100039 measurement by using a point-like 252Cf(SF) source. 2321800100040 The para-terphenyl detector (sensitive to neutrons and 2321800100041 gamma-rays) was placed at a distance of about 1 m from 2321800100042 the fission chamber perpendicular to the ion beam axis.2321800100043 ANALYSIS Pulse shape analysis. 2321800100044 CORRECTION For background. 2321800100045 For neutron detection efficiency energy dependence. 2321800100046 HISTORY (20140121C) M.M. 2321800100047 Request for the data was sent 06.02.2014 to authors 2321800100048 A.Sardet, A.Oberstedt . 2321800100049 Reply 10.02.2014 of A.Sardet: our data are too 2321800100050 preliminary to be inserted in the EXFOR database. 2321800100051 (20220128A) SD: Digitized data were added to Subent 0022321800100052 ENDBIB 50 0 2321800100053 NOCOMMON 0 0 2321800100054 ENDSUBENT 53 0 2321800199999 SUBENT 23218002 20220128 23102321800200001 BIB 6 10 2321800200002 REACTION (92-U-238(N,F),PR,NU/DE,,REL) 2321800200003 Relative yield/MeV. Spectrum is normalized in 2321800200004 yield to the other ones (see REL-REF). 2321800200005 REL-REF (N,41450002,A.M.Trufanov+,J,PAN,64,1,2001) 2321800200006 COMMENT Reply 10.02.2014 of A.Sardet: our data are too 2321800200007 preliminary to be inserted in the EXFOR database. 2321800200008 ERR-ANALYS (DATA-ERR) No information about source of uncertainty 2321800200009 STATUS (PRELM) See COMMENT. 2321800200010 (CURVE) Fig.6 of Phys.Procedia,47(2013)144 2321800200011 HISTORY (20220128A) SD: Digitized data were added. 2321800200012 ENDBIB 10 0 2321800200013 COMMON 3 3 2321800200014 EN EN-ERR-DIG ERR-DIG 2321800200015 MEV MEV PER-CENT 2321800200016 5.2 0.012 0.5 2321800200017 ENDCOMMON 3 0 2321800200018 DATA 4 35 2321800200019 E E-ERR DATA DATA-ERR 2321800200020 MEV MEV ARB-UNITS ARB-UNITS 2321800200021 0.530 3.475E-01 6.244E-02 2321800200022 0.581 4.428E-01 6.819E-02 2321800200023 0.633 4.055E-01 8.894E-02 2321800200024 0.684 6.231E-01 8.808E-02 2321800200025 0.736 4.578E-01 6.470E-02 2321800200026 0.787 3.476E-01 4.913E-02 2321800200027 0.839 3.400E-01 5.235E-02 2321800200028 0.880 4.945E-01 6.371E-02 2321800200029 0.931 4.479E-01 5.976E-02 2321800200030 1.003 0.051 4.838E-01 5.635E-02 2321800200031 1.106 0.041 3.674E-01 5.193E-02 2321800200032 1.199 0.051 4.335E-01 5.584E-02 2321800200033 1.302 0.051 3.595E-01 4.187E-02 2321800200034 1.405 3.047E-01 3.549E-02 2321800200035 1.497 0.051 3.517E-01 4.531E-02 2321800200036 1.601 0.051 3.015E-01 4.261E-02 2321800200037 1.704 0.051 1.609E-01 2.478E-02 2321800200038 1.806 0.051 2.613E-01 4.024E-02 2321800200039 1.899 0.051 2.792E-01 2321800200040 1.899 3.222E-01 2321800200041 2.054 0.103 2.290E-01 2.387E-02 2321800200042 2.249 0.103 2.342E-01 3.017E-02 2321800200043 2.455 0.093 2.241E-01 2.887E-02 2321800200044 2.651 0.103 1.336E-01 2.057E-02 2321800200045 2.846 0.103 1.943E-01 2.503E-02 2321800200046 3.104 0.144 1.396E-01 1.974E-02 2321800200047 3.402 0.144 1.211E-01 2.334E-02 2321800200048 3.701 0.144 9.296E-02 1.550E-02 2321800200049 4.000 0.154 6.394E-02 1.149E-02 2321800200050 4.298 0.154 6.467E-02 1.332E-02 2321800200051 4.597 0.144 4.597E-02 9.092E-03 2321800200052 4.896 0.144 3.609E-02 8.689E-03 2321800200053 5.297 0.247 4.167E-02 1.202E-02 2321800200054 5.802 0.247 1.432E-02 5.829E-03 2321800200055 6.296 0.247 2.202E-02 6.664E-03 2321800200056 ENDDATA 37 0 2321800200057 ENDSUBENT 56 0 2321800299999 SUBENT 23218003 20140121 22392321800300001 BIB 5 11 2321800300002 REACTION (92-U-238(N,F),PR,KE) 2321800300003 Prompt neutron spectrum temperature for U-238 fission 2321800300004 by 5.2 MeV incident neutrons is given as value 2321800300005 1.23+-0.05 MeV, multiplied by compiler by factor 3/2 .2321800300006 REL-REF (D,41450001,A.M.Trufanov+,J,YF,64,(1),3,2001) 2321800300007 1.34+-0.01 MeV temperature. 2321800300008 MISC-COL (MISC) Prompt neutron spectrum temperature. 2321800300009 ANALYSIS Fitting Maxwellians to the experimental values. 2321800300010 STATUS (TABLE) Text, page 148 of J,PPRC,47,144,2013. 2321800300011 (PRELM) Preliminary result. 2321800300012 (DEP,23218002) Measured spectrum. 2321800300013 ENDBIB 11 0 2321800300014 NOCOMMON 0 0 2321800300015 DATA 5 1 2321800300016 EN DATA DATA-ERR MISC MISC-ERR 2321800300017 MEV MEV MEV MEV MEV 2321800300018 5.2 1.845 0.075 1.23 0.05 2321800300019 ENDDATA 3 0 2321800300020 ENDSUBENT 19 0 2321800399999 ENDENTRY 3 0 2321899999999