ENTRY 32726 20141026 31673272600000001 SUBENT 32726001 20141026 31673272600100001 BIB 9 21 3272600100002 TITLE Measurement of 248Cm/252Cf spontaneous prompt fission 3272600100003 neutron spectrum 3272600100004 AUTHOR (Bao Shanglian, Liu Wenlong, Wen Chenlin, Fan Tieshuan,3272600100005 O.Batenkov, M.Majorov) 3272600100006 INSTITUTE (3CPRBJG,4RUSRI) 3272600100007 REFERENCE (J,PHE,25,304,2001) 3272600100008 METHOD (TOF) Flight path is 32, 50, 100 cm. The Average time 3272600100009 resolution is 2.6 nsec, which is confirmed by FWHM of 3272600100010 prompt gamma peak. 3272600100011 DETECTOR (SCIN) Stilbene crystals for fission neutrons with 3272600100012 50x30 mm in diameter and thickness. 3272600100013 (FISCH) Micro fission chamber using CH4(95%) and Ar 3272600100014 mixture gas for fission fragments. 3272600100015 PART-DET (FF,A,N) 3272600100016 SAMPLE The evaporated samples were covered with a 35ug/cm2 3272600100017 carbon film with 3 mm in diameter. The curium layer, 3272600100018 Cm-248 content is 95.2%, Cm-244 content is 0.04 %, 3272600100019 Cm-245 content is 0.2%, Cm-246 content is 4.5%. The 3272600100020 purity of californium layer is 99.9% 252Cf. Fission 3272600100021 rate in Cm - 5.16E3 fis/min, Cf - 2.1E5 fis/min. 3272600100022 HISTORY (20141026C) Compiled by Chen Guochang (CNDC). 3272600100023 ENDBIB 21 0 3272600100024 NOCOMMON 0 0 3272600100025 ENDSUBENT 24 0 3272600199999 SUBENT 32726002 20141026 31673272600200001 BIB 3 6 3272600200002 REACTION ((96-CM-248(0,F),PR,NU/DE)/(98-CF-252(0,F),PR,NU/DE)) 3272600200003 Measured ratio of Cm-248 spontaneous fission neutron 3272600200004 energy distribution to Cf-252 one. 3272600200005 ERR-ANALYS (ERR-S) Statistical uncertainty. 3272600200006 STATUS (CURVE) Fig.4 of High Energ.Phys.Nucl.Phys.25,304,2001 3272600200007 was digitized by GDgraph-5.0. 3272600200008 ENDBIB 6 0 3272600200009 NOCOMMON 0 0 3272600200010 DATA 4 41 3272600200011 E E-ERR DATA ERR-S 3272600200012 MEV MEV NO-DIM NO-DIM 3272600200013 1.16E+00 4.43E-02 0.9759 0.1073 3272600200014 1.27E+00 4.84E-02 0.9973 0.0794 3272600200015 1.39E+00 5.73E-02 0.9717 0.0613 3272600200016 1.54E+00 6.48E-02 0.9557 0.0490 3272600200017 1.64E+00 7.22E-02 1.0780 0.0493 3272600200018 1.73E+00 7.79E-02 0.9778 0.0423 3272600200019 1.84E+00 8.28E-02 1.0403 0.0404 3272600200020 1.96E+00 9.22E-02 1.0028 0.0361 3272600200021 2.04E+00 5.90E-02 1.0056 0.0367 3272600200022 2.24E+00 1.08E-01 1.0068 0.0300 3272600200023 2.33E+00 6.98E-02 1.0043 0.0311 3272600200024 2.45E+00 8.09E-02 1.0171 0.0293 3272600200025 2.58E+00 4.57E-02 1.0344 0.0417 3272600200026 2.73E+00 9.28E-02 1.0163 0.0265 3272600200027 2.86E+00 1.60E-01 1.0217 0.0235 3272600200028 3.06E+00 1.07E-01 1.0167 0.0232 3272600200029 3.25E+00 6.41E-02 1.0193 0.0321 3272600200030 3.36E+00 6.63E-02 1.0213 0.0320 3272600200031 3.48E+00 1.18E-01 1.0060 0.0214 3272600200032 3.58E+00 7.07E-02 0.9891 0.0309 3272600200033 3.73E+00 1.42E-01 1.0193 0.0201 3272600200034 3.86E+00 2.43E-01 1.0085 0.0190 3272600200035 4.01E+00 1.65E-01 0.9839 0.0198 3272600200036 4.14E+00 9.03E-02 0.9616 0.0292 3272600200037 4.33E+00 9.42E-02 0.9891 0.0296 3272600200038 4.52E+00 1.08E-01 0.9972 0.0300 3272600200039 4.74E+00 1.95E-01 0.9903 0.0196 3272600200040 4.93E+00 1.12E-01 0.9698 0.0304 3272600200041 5.14E+00 1.23E-01 0.9134 0.0296 3272600200042 5.41E+00 1.29E-01 0.9572 0.0315 3272600200043 5.71E+00 1.48E-01 0.9639 0.0328 3272600200044 6.02E+00 1.56E-01 1.0104 0.0357 3272600200045 6.42E+00 3.53E-01 0.9689 0.0235 3272600200046 6.76E+00 1.89E-01 0.9676 0.0395 3272600200047 7.23E+00 3.33E-01 0.9695 0.0271 3272600200048 7.65E+00 2.29E-01 0.9254 0.0479 3272600200049 8.20E+00 2.46E-01 0.9254 0.0562 3272600200050 8.84E+00 2.83E-01 1.0178 0.0706 3272600200051 9.55E+00 3.06E-01 0.9577 0.0826 3272600200052 1.04E+01 3.53E-01 0.9713 0.1053 3272600200053 1.14E+01 3.89E-01 1.0293 0.1345 3272600200054 ENDDATA 43 0 3272600200055 ENDSUBENT 54 0 3272600299999 SUBENT 32726003 20141026 31673272600300001 BIB 4 5 3272600300002 REACTION (96-CM-248(0,F)0-NN-1,PR,KEM) 3272600300003 ASSUMED (ASSUM,98-CF-252(0,F)0-NN-1,PR,KEM) 3272600300004 ERR-ANALYS (DATA-ERR) No information on source of uncertainties 3272600300005 STATUS (TABLE) Text (p307) of High Energ.Phys.Nucl.Phys. 3272600300006 25,304,2001 was digitized by DGgraph-5.0. 3272600300007 ENDBIB 5 0 3272600300008 NOCOMMON 0 0 3272600300009 DATA 3 1 3272600300010 DATA DATA-ERR ASSUM 3272600300011 MEV MEV MEV 3272600300012 1.401 0.006 1.42 3272600300013 ENDDATA 3 0 3272600300014 ENDSUBENT 13 0 3272600399999 ENDENTRY 3 0 3272699999999