ENTRY 22112 20150819 22432211200000001 SUBENT 22112001 20150819 22432211200100001 BIB 13 67 2211200100002 TITLE Prompt fission neutron spectrum measurements of 2211200100003 232-Th and 238-U for 2 MeV neutrons 2211200100004 AUTHOR (M.Baba,H.Wakabayashi,M.Ishikawa,N.Nakashima,N.Ito, 2211200100005 N.Hirakawa,K.Maeda) 2211200100006 INSTITUTE (2JPNTOH) M.Baba, H.Wakabayashi, N.Ito, M.Ishikawa, 2211200100007 N.Hirakawa, N.Nakashima 2211200100008 (2JPNJAE) K.Maeda 2211200100009 FACILITY (DYNAM,2JPNTOH) 4.5 MV pulsed Dynamitron accelerator, 2211200100010 provided a pulsed proton beam with bursts of 1.5 ns 2211200100011 duration at 2 MHz repetition rate, and an average 2211200100012 beam current of 4 - 6 microAmps. 2211200100013 REFERENCE (S,INDC(NDS)-220,149,1989) Main ref.,graphs are given. 2211200100014 Double diff. cross-sections presented on figs. 8,9 of 2211200100015 INDC(NDS)-220,149 are compiled in Entry 22158 as their 2211200100016 final results (see REL-REF) 2211200100017 (J,NST,27,601,1990) Final pub. for 238U 2211200100018 ((R,INDC(JPN)-129,1989)=(R,JAERI-M-89-143,1989)= 2211200100019 (R,NEANDC-(J)-142,1989)) In Japanese. Abstracts and 2211200100020 headings in English 2211200100021 REL-REF (O,22158001,M.Baba+,J,NST,27,601,1990) - double diff. 2211200100022 cross-sections from figs. 8,9 of INDC(NDS)-220,149,19892211200100023 INC-SOURCE (P-T) Tritium-loaded titanium target. 2211200100024 Energy spread = 90 keV. 2211200100025 METHOD (TOF) Time-of-flight with flight paths of 3.2 and 2211200100026 3.9 m. Time resolution was 1.5 ns. 2211200100027 (PSD) Pulse-shape discrimination 2211200100028 (PHD) Pulse-height discrimination analysis 2211200100029 DETECTOR (SCIN) Big NE213 liquid scintillator 14 cm diameter by2211200100030 10 cm thick, and small NE213 liquid scintillator for 2211200100031 monitor. The detectors were equipped with pulse-shape 2211200100032 discrimination for gamma-ray rejection. 2211200100033 The relative efficiency of the detector was determined 2211200100034 on the basis of Monte-Carlo calculation, and 2211200100035 measurements of fission neutrons from 252Cf and of 2211200100036 hydrogen-scattered neutron yields at 14 and 18 MeV 2211200100037 SAMPLE .Cylinders of elemental uranium or thorium, 2 cm in 2211200100038 diameter and 5 cm long. The samples were placed about 2211200100039 10 cm from the neutron-producing target. 2211200100040 .Lead sample for elastic scattering corrections 2211200100041 CORRECTION The data were corrected for: 2211200100042 * backgrounds and detector efficiency, 2211200100043 * neutron multiple-scattering in the sample, 2211200100044 * tail of elastically-scattered neutrons, 2211200100045 * finite time-resolution of the T-O-F spectrometer, 2211200100046 * time-shift due to detector thickness, 2211200100047 * elastic scattering. 2211200100048 ADD-RES (COMP) Experimental data compared with ENDF/B-IV and 2211200100049 JENDL-2 evaluations 2211200100050 (N-SPC) Neutron spectra are fitted to Maxwell and Watt 2211200100051 type distributions: 2211200100052 Nmaxw(E) = Cm*SQRT(E)*exp(-E/Tm); and 2211200100053 Nwatt(E) = Cw*exp(-E/A)*sinh(B*E), where 2211200100054 for Th-232 Tm=1.26, A=0.96, B=2.17; 2211200100055 for U-238 Tm=1.25, A=0.97, B=2.17. 2211200100056 .Graphs of DDX spectra for 14.1 MeV neutrons on Th232 2211200100057 and U238, angles 30, 90, 150 degree, are given 2211200100058 HISTORY (19891205C) N.O. 2211200100059 (19891211E) 2211200100060 (20101119A) SD:Updated to new date formats,lower case. 2211200100061 Corrections according last EXFOR rules and Dict. 2211200100062 Page added to ref. INDC(NDS)-220. Keyword CORRECTION 2211200100063 added. FLAG deleted, information added to REACTION as 2211200100064 free text. REACTION code corrected in Subents 002-004 2211200100065 (20110720A) TITLE updated. Neutron energy moved to 2211200100066 SAN 001. BIB information corrected in subents 002-004.2211200100067 Subents 005,006 added. 2211200100068 (20150819U) SD: Ref. on NST,27 added. MONITOR deleted. 2211200100069 ENDBIB 67 0 2211200100070 COMMON 2 3 2211200100071 EN EN-RSL 2211200100072 MEV MEV 2211200100073 2. 0.090 2211200100074 ENDCOMMON 3 0 2211200100075 ENDSUBENT 74 0 2211200199999 SUBENT 22112002 20110720 22272211200200001 BIB 6 9 2211200200002 REACTION (92-U-238(N,F),PR,NU/DE,,RRE/REL) Divided by SQRT(E), 2211200200003 data given in arbitrary units 2211200200004 METHOD (TOF) .Flight path is 3.9 m 2211200200005 ANALYSIS .Detector set up at 90 degrees with respect to 2211200200006 the proton beam line. 2211200200007 ERR-ANALYS (ERR-S) Statistical errors only. 2211200200008 STATUS (TABLE) Data obtained from M.Baba. 2211200200009 HISTORY (20110219A) ON: Reaction code changed in SF5-SF8: 2211200200010 PR,DE,N => PR,NU/DE,,REL 2211200200011 ENDBIB 9 0 2211200200012 NOCOMMON 0 0 2211200200013 DATA 3 30 2211200200014 E DATA ERR-S 2211200200015 MEV ARB-UNITS ARB-UNITS 2211200200016 2.5000E+00 1.6780E-01 1.7850E-03 2211200200017 2.7000E+00 1.4920E-01 1.6550E-03 2211200200018 2.9000E+00 1.2970E-01 1.4780E-03 2211200200019 3.1000E+00 1.1470E-01 1.3540E-03 2211200200020 3.3000E+00 1.0000E-01 1.2270E-03 2211200200021 3.5000E+00 8.8180E-02 1.1250E-03 2211200200022 3.7000E+00 7.8540E-02 1.0450E-03 2211200200023 3.9000E+00 6.8980E-02 9.6930E-04 2211200200024 4.1000E+00 6.0820E-02 8.9860E-04 2211200200025 4.3000E+00 5.2670E-02 8.2140E-04 2211200200026 4.5000E+00 4.7090E-02 7.7110E-04 2211200200027 4.7000E+00 4.1120E-02 7.1670E-04 2211200200028 4.9000E+00 3.6430E-02 6.7090E-04 2211200200029 5.1000E+00 3.0770E-02 6.4070E-04 2211200200030 5.3950E+00 2.4770E-02 4.2460E-04 2211200200031 5.7950E+00 1.8860E-02 3.6550E-04 2211200200032 6.1950E+00 1.3680E-02 3.0860E-04 2211200200033 6.5950E+00 1.0480E-02 2.7090E-04 2211200200034 6.9950E+00 7.2440E-03 2.2790E-04 2211200200035 7.3950E+00 5.3990E-03 1.9920E-04 2211200200036 7.7950E+00 3.7700E-03 1.6860E-04 2211200200037 8.1950E+00 2.8230E-03 1.4770E-04 2211200200038 8.5950E+00 2.3920E-03 1.3720E-04 2211200200039 8.9950E+00 1.6470E-03 1.1690E-04 2211200200040 9.3950E+00 1.1610E-03 1.0220E-04 2211200200041 9.7950E+00 1.0610E-03 9.9060E-05 2211200200042 1.0190E+01 6.9080E-04 8.5410E-05 2211200200043 1.0870E+01 3.2110E-04 4.2300E-05 2211200200044 1.1870E+01 1.6740E-04 3.4450E-05 2211200200045 1.2870E+01 9.7500E-05 4.1340E-05 2211200200046 ENDDATA 32 0 2211200200047 ENDSUBENT 46 0 2211200299999 SUBENT 22112003 20110720 22272211200300001 BIB 6 9 2211200300002 REACTION (92-U-238(N,F),PR,NU/DE,,RRE/REL) Divided by SQRT(E), 2211200300003 data given in arbitrary units 2211200300004 METHOD (TOF) .Flight path is 3.9 m 2211200300005 ANALYSIS .Detector set up at 135 degrees with respect to 2211200300006 the proton beam line. 2211200300007 ERR-ANALYS (ERR-S) Statistical errors only. 2211200300008 STATUS (TABLE) Data obtained from M.Baba. 2211200300009 HISTORY (20110219A) ON: Reaction code changed in SF5-SF8: 2211200300010 PR,DE,N => PR,NU/DE,,REL 2211200300011 ENDBIB 9 0 2211200300012 NOCOMMON 0 0 2211200300013 DATA 3 31 2211200300014 E DATA ERR-S 2211200300015 MEV ARB-UNITS ARB-UNITS 2211200300016 2.3000E+00 1.9270E-01 1.9460E-03 2211200300017 2.5000E+00 1.7320E-01 1.8070E-03 2211200300018 2.7000E+00 1.5170E-01 1.6410E-03 2211200300019 2.9000E+00 1.3140E-01 1.4690E-03 2211200300020 3.1000E+00 1.2000E-01 1.3710E-03 2211200300021 3.3000E+00 1.0440E-01 1.2420E-03 2211200300022 3.5000E+00 8.9980E-02 1.0850E-03 2211200300023 3.7000E+00 8.1720E-02 1.0470E-03 2211200300024 3.9000E+00 7.1980E-02 9.6950E-04 2211200300025 4.1000E+00 6.2960E-02 8.9260E-04 2211200300026 4.3000E+00 5.5640E-02 8.2880E-04 2211200300027 4.5000E+00 5.0030E-02 7.7920E-04 2211200300028 4.7000E+00 4.2140E-02 7.1170E-04 2211200300029 4.9000E+00 3.7430E-02 6.6550E-04 2211200300030 5.1000E+00 3.2030E-02 6.2810E-04 2211200300031 5.3950E+00 2.6060E-02 4.2090E-04 2211200300032 5.7950E+00 2.0340E-02 3.6600E-04 2211200300033 6.1950E+00 1.4570E-02 3.0530E-04 2211200300034 6.5950E+00 1.0730E-02 2.6210E-04 2211200300035 6.9950E+00 7.9150E-03 2.2750E-04 2211200300036 7.3950E+00 5.5560E-03 1.9250E-04 2211200300037 7.7950E+00 4.1050E-03 1.6700E-04 2211200300038 8.1950E+00 2.9770E-03 1.4360E-04 2211200300039 8.5950E+00 2.5130E-03 1.3320E-04 2211200300040 8.9950E+00 1.7660E-03 1.1410E-04 2211200300041 9.3950E+00 1.3860E-03 1.0380E-04 2211200300042 9.7950E+00 9.2780E-04 8.9160E-05 2211200300043 1.0190E+01 6.3560E-04 7.8330E-05 2211200300044 1.0870E+01 3.7650E-04 4.2680E-05 2211200300045 1.1870E+01 1.4850E-04 3.4220E-05 2211200300046 1.2870E+01 9.9990E-05 3.1450E-05 2211200300047 ENDDATA 33 0 2211200300048 ENDSUBENT 47 0 2211200399999 SUBENT 22112004 20110720 22272211200400001 BIB 6 9 2211200400002 REACTION (90-TH-232(N,F),PR,NU/DE,,RRE/REL) Divided by SQRT(E), 2211200400003 data given in arbitrary units 2211200400004 METHOD (TOF) Flight path is 3.2 m 2211200400005 ANALYSIS .Detector set up at 135 degrees with respect to 2211200400006 the proton beam line. 2211200400007 ERR-ANALYS (ERR-S) Statistical errors only. 2211200400008 STATUS (TABLE) Data obtained from M.Baba. 2211200400009 HISTORY (20110219A) ON: Reaction code changed in SF5-SF8: 2211200400010 PR,DE,N => PR,NU/DE,,REL 2211200400011 ENDBIB 9 0 2211200400012 NOCOMMON 0 0 2211200400013 DATA 3 29 2211200400014 E DATA ERR-S 2211200400015 MEV ARB-UNITS ARB-UNITS 2211200400016 2.3000E+00 4.9290E+03 9.3170E+01 2211200400017 2.5000E+00 4.2180E+03 8.5600E+01 2211200400018 2.7000E+00 3.7910E+03 8.1380E+01 2211200400019 2.9000E+00 3.3490E+03 7.6310E+01 2211200400020 3.1000E+00 2.8880E+03 7.1310E+01 2211200400021 3.3000E+00 2.5530E+03 6.8140E+01 2211200400022 3.5000E+00 2.1470E+03 6.4220E+01 2211200400023 3.7000E+00 2.0360E+03 6.2800E+01 2211200400024 3.9000E+00 1.7050E+03 5.9270E+01 2211200400025 4.1000E+00 1.4940E+03 5.6600E+01 2211200400026 4.3000E+00 1.3220E+03 5.4320E+01 2211200400027 4.5000E+00 1.1240E+03 5.1500E+01 2211200400028 4.7000E+00 9.6410E+02 4.9430E+01 2211200400029 4.9000E+00 8.4640E+02 4.7640E+01 2211200400030 5.1000E+00 7.2910E+02 3.1940E+01 2211200400031 5.3950E+00 6.4100E+02 2.1620E+01 2211200400032 5.7950E+00 4.7620E+02 1.9030E+01 2211200400033 6.1950E+00 3.4410E+02 1.6740E+01 2211200400034 6.5950E+00 2.6400E+02 1.5200E+01 2211200400035 6.9950E+00 1.8880E+02 1.3600E+01 2211200400036 7.3950E+00 1.6050E+02 1.2870E+01 2211200400037 7.7950E+00 9.5990E+01 1.1040E+01 2211200400038 8.1950E+00 8.1030E+01 1.0460E+01 2211200400039 8.5950E+00 6.2890E+01 9.7170E+00 2211200400040 8.9950E+00 3.6490E+01 8.5560E+00 2211200400041 9.3950E+00 2.9480E+01 8.2270E+00 2211200400042 9.7950E+00 2.1410E+01 7.8200E+00 2211200400043 1.0190E+01 8.9190E+00 7.2030E+00 2211200400044 1.0870E+01 8.5720E+00 4.5230E+00 2211200400045 ENDDATA 31 0 2211200400046 ENDSUBENT 45 0 2211200499999 SUBENT 22112005 20110720 22272211200500001 BIB 7 14 2211200500002 REACTION (90-TH-232(N,F)0-NN-1,PR,KEM) Temperature of the 2211200500003 prompt fission neutron for Maxwell distribution 2211200500004 ANALYSIS .Obtained by Maxwell fitting of experimental data 2211200500005 REL-REF (A,21019001,R.Batchelor+,J,NP,65,236,196503) Reference 2211200500006 corrected of presented in INDC(NDS)-220,149,1989 2211200500007 (A,21139001,E.Barnard+,J,NP,71,228,196509) 2211200500008 (A,,F.Terrel,J,PR,127,880,1962) 2211200500009 COMMENT .Reference to Terrell taken from INDC(NDS)-220,149, 2211200500010 1989. Absent in CINDA and EXFOR 2211200500011 ERR-ANALYS .Error is of the order of few percent 2211200500012 STATUS (TABLE) Data taken from the text of INDC(NDS)-220, 2211200500013 149,1989, page 154 2211200500014 (DEP,22112004) 2211200500015 HISTORY (20110720C) S.M. 2211200500016 ENDBIB 14 0 2211200500017 NOCOMMON 0 0 2211200500018 DATA 1 1 2211200500019 DATA 2211200500020 MEV 2211200500021 1.26 2211200500022 ENDDATA 3 0 2211200500023 ENDSUBENT 22 0 2211200599999 SUBENT 22112006 20110720 22272211200600001 BIB 7 17 2211200600002 REACTION (92-U-238(N,F)0-NN-1,PR,KEM) Temperature of the prompt 2211200600003 fission neutron for Maxwell distribution 2211200600004 ANALYSIS .Obtained by Maxwell fitting of experimental data 2211200600005 REL-REF (A,21019001,R.Batchelor+,J,NP,65,236,196503) Reference 2211200600006 corrected of presented in INDC(NDS)-220,149,1989 2211200600007 (A,21139001,E.Barnard+,J,NP,71,228,196509) 2211200600008 (D,,R.J.Howerton+,J,NSE,46,414,1971) Temperature is 2211200600009 less by 4.5% 2211200600010 (A,,F.Terrel,J,PR,127,880,1962) 2211200600011 COMMENT .References to Howerton and Terrell taken from 2211200600012 INDC(NDS)-220,149,1989, Absent in CINDA and EXFOR 2211200600013 ERR-ANALYS .Error is of the order of few percent 2211200600014 STATUS (TABLE) .Data taken from the text of INDC(NDS)-220, 2211200600015 149,1989, page 154 2211200600016 (DEP,22112002) 2211200600017 (DEP,22112003) 2211200600018 HISTORY (20110720C) S.M. 2211200600019 ENDBIB 17 0 2211200600020 NOCOMMON 0 0 2211200600021 DATA 1 1 2211200600022 DATA 2211200600023 MEV 2211200600024 1.25 2211200600025 ENDDATA 3 0 2211200600026 ENDSUBENT 25 0 2211200699999 ENDENTRY 6 0 2211299999999