ENTRY 22014 20210315 23022201400000001 SUBENT 22014001 20210315 23022201400100001 BIB 12 41 2201400100002 TITLE Measurement of fast neutron induced fission cross 2201400100003 sections of 232Th, 233U and 234U relative to 235U 2201400100004 AUTHOR (K.Kanda, H.Imaruoka, K.Yoshida, O.Sato, N.Hirakawa) 2201400100005 INSTITUTE (2JPNTOH) 2201400100006 REFERENCE (J,RE,93,233,1986) 2201400100007 ((S,JAERI-M-85-035,220,1985)=(S,INDC(JPN)-98,220,1985))2201400100008 Preliminary data tabulated 2201400100009 FACILITY (DYNAM,2JPNTOH) 2201400100010 INC-SOURCE (P-T) for 0.5 to 3 MeV neutrons with Ti-T target 2201400100011 (D-D) for 3 to 4 MeV neutrons with Ti-D target, 2201400100012 for 4 to 7 MeV neutrons with D2 gas target 2201400100013 SAMPLE Electroplated on Pt plates (36 mm diam. 0.3 mm thick) 2201400100014 sintered into oxides to fix on the plates. 2201400100015 The deposition diameter was 25 mm. 2201400100016 Each sample was placed back to back to a 235U sample 2201400100017 in the fission chamber. 2201400100018 The number of fissionable nuclei in the samples was 2201400100019 determined by 2201400100020 - 2pi alpha counting /Th-232/, 2201400100021 - low geometry alpha counting /U-233,U-234/ 2201400100022 - thermal neutron irradiation /U-235/ 2201400100023 The samples were placed perpendicular to the beam at 2201400100024 distances of 3 to 8 cm from the target. 2201400100025 DETECTOR (FISCH) Parallel plate type ionization chamber 2201400100026 containing 90% Ar and 10% CH4 2201400100027 (SCIN) NE213 scintillation detector (15 m from the 2201400100028 target) to measure mean energies and spread of source 2201400100029 neutrons at an angle of 0 deg. 2201400100030 CORRECTION Corrected for 2201400100031 - background counts due to room scattered neutrons, 2201400100032 - impurities in the samples, 2201400100033 - discriminated counts by bias settings, 2201400100034 etc. 2201400100035 ERR-ANALYS (ERR-1) 235U number of atoms in the sample (1.7%) 2201400100036 STATUS (TABLE)Data were taken from private communications 2201400100037 HISTORY (19861113C) NO. 2201400100038 (19861212E) 2201400100039 (20071122A) Date and BIB-information are corrected 2201400100040 (20071122U) Last corrections have been done - SM 2201400100041 (20180724A) On. ERR-1 added. Major rev. in 002-004. 2201400100042 (20210315U) On. Minor revisions in 002-004. 2201400100043 ENDBIB 41 0 2201400100044 COMMON 1 3 2201400100045 ERR-1 2201400100046 PER-CENT 2201400100047 1.7 2201400100048 ENDCOMMON 3 0 2201400100049 ENDSUBENT 48 0 2201400199999 SUBENT 22014002 20210315 23022201400200001 BIB 4 10 2201400200002 REACTION ((90-TH-232(N,F),,SIG)/(92-U-235(N,F),,SIG)) 2201400200003 ERR-ANALYS (ERR-T) Total errors are dominated by the counting 2201400200004 statistics (~1%). 2201400200005 COMMENT By compiler (2021-03-15): 2201400200006 The energy-dependent uncertainty is equal to the 2201400200007 uncertainty due to the 235U mass (1.7%) at some data 2201400200008 points, and it is not clear if the energy-dependent 2201400200009 uncertainty is really total. 2201400200010 HISTORY (20180724A) On. ERR-ANALYS added. 2201400200011 (20210315U) On. COMMENT modified. 2201400200012 ENDBIB 10 0 2201400200013 NOCOMMON 0 0 2201400200014 DATA 4 17 2201400200015 EN EN-RSL DATA ERR-T 2201400200016 MEV MEV NO-DIM PER-CENT 2201400200017 1.50 6.0E-02 6.495E-02 2.4 2201400200018 1.61 7.0E-02 8.623E-02 2.3 2201400200019 1.74 7.0E-02 6.123E-02 2.4 2201400200020 1.90 2.0E-01 8.469E-02 1.7 2201400200021 2.20 2.2E-01 9.544E-02 1.7 2201400200022 2.51 2.2E-01 9.191E-02 1.7 2201400200023 2.80 2.2E-01 1.039E-01 1.7 2201400200024 4.05 3.6E-01 1.288E-01 1.9 2201400200025 4.49 2.6E-01 1.301E-01 1.9 2201400200026 5.15 2.1E-01 1.336E-01 1.8 2201400200027 5.37 2.0E-01 1.307E-01 1.9 2201400200028 5.67 1.5E-01 1.346E-01 1.8 2201400200029 5.73 1.8E-01 1.314E-01 1.9 2201400200030 6.00 1.6E-01 1.358E-01 1.8 2201400200031 6.24 1.3E-01 1.666E-01 1.9 2201400200032 6.45 1.5E-01 1.968E-01 1.8 2201400200033 6.82 1.6E-01 2.390E-01 1.8 2201400200034 ENDDATA 19 0 2201400200035 ENDSUBENT 34 0 2201400299999 SUBENT 22014003 20210315 23022201400300001 BIB 4 10 2201400300002 REACTION ((92-U-233(N,F),,SIG)/(92-U-235(N,F),,SIG)) 2201400300003 ERR-ANALYS (ERR-T) Total errors are dominated by 2201400300004 (ERR-2) loss counts by bias setting (1.5%) 2201400300005 COMMENT By compiler (2021-03-15): 2201400300006 The energy-dependent uncertainty is equal to the 2201400300007 uncertainty due to the 235U mass (1.7%) at some data 2201400300008 points, and it is not clear if the energy-dependent 2201400300009 uncertainty is really total. 2201400300010 HISTORY (20180724A) On. ERR-ANALYS added. 2201400300011 (20210315U) On. COMMENT modified. 2201400300012 ENDBIB 10 0 2201400300013 COMMON 1 3 2201400300014 ERR-2 2201400300015 PER-CENT 2201400300016 1.5 2201400300017 ENDCOMMON 3 0 2201400300018 DATA 4 42 2201400300019 EN EN-RSL DATA ERR-T 2201400300020 MEV MEV NO-DIM PER-CENT 2201400300021 4.9E-01 8.0E-02 1.698 1.7 2201400300022 5.4E-01 1.0E-01 1.735 1.9 2201400300023 5.7E-01 8.0E-02 1.694 1.8 2201400300024 6.8E-01 7.0E-02 1.711 1.7 2201400300025 7.6E-01 7.0E-02 1.666 1.9 2201400300026 8.6E-01 6.0E-01 1.644 1.7 2201400300027 9.7E-01 1.3E-01 1.602 1.9 2201400300028 1.00 7.0E-02 1.531 1.9 2201400300029 1.13 1.1E-01 1.565 1.9 2201400300030 1.18 6.0E-02 1.551 1.9 2201400300031 1.29 1.1E-01 1.591 1.7 2201400300032 1.30 6.0E-02 1.550 1.9 2201400300033 1.44 5.0E-02 1.543 1.8 2201400300034 1.57 1.0E-01 1.535 1.8 2201400300035 1.58 2.0E-01 1.566 1.8 2201400300036 1.59 5.0E-02 1.532 1.7 2201400300037 1.77 6.0E-02 1.531 1.7 2201400300038 1.85 1.0E-01 1.563 1.9 2201400300039 1.90 2.0E-01 1.561 1.8 2201400300040 1.98 4.0E-02 1.570 1.7 2201400300041 2.16 9.0E-02 1.569 1.9 2201400300042 2.20 2.2E-01 1.560 1.7 2201400300043 2.43 9.0E-02 1.562 1.8 2201400300044 2.51 2.2E-01 1.581 1.8 2201400300045 2.72 8.0E-02 1.579 1.9 2201400300046 2.80 2.2E-01 1.560 1.8 2201400300047 3.04 8.0E-02 1.569 1.9 2201400300048 3.28 3.0E-01 1.533 1.7 2201400300049 3.82 3.0E-01 1.507 1.7 2201400300050 4.07 3.5E-01 1.489 1.9 2201400300051 4.37 3.2E-01 1.529 1.7 2201400300052 4.50 2.5E-01 1.496 1.9 2201400300053 4.89 1.4E-01 1.498 1.7 2201400300054 5.25 1.4E-01 1.484 1.7 2201400300055 5.44 1.5E-01 1.499 1.8 2201400300056 5.59 1.0E-01 1.499 1.7 2201400300057 5.65 1.4E-01 1.512 1.8 2201400300058 5.86 8.0E-02 1.577 1.7 2201400300059 6.17 1.5E-01 1.548 1.7 2201400300060 6.47 1.6E-01 1.462 1.6 2201400300061 6.72 1.8E-01 1.437 1.7 2201400300062 6.97 1.0E-01 1.384 1.9 2201400300063 ENDDATA 44 0 2201400300064 ENDSUBENT 63 0 2201400399999 SUBENT 22014004 20210315 23022201400400001 BIB 4 10 2201400400002 REACTION ((92-U-234(N,F),,SIG)/(92-U-235(N,F),,SIG)) 2201400400003 ERR-ANALYS (ERR-T) Total errors are dominated by 2201400400004 (ERR-2) loss counts by bias setting (1.0%) 2201400400005 COMMENT By compiler (2021-03-15): 2201400400006 The energy-dependent uncertainty is equal to the 2201400400007 uncertainty due to the 235U mass (1.7%) at some data 2201400400008 points, and it is not clear if the energy-dependent 2201400400009 uncertainty is really total. 2201400400010 HISTORY (20180724A) On. ERR-ANALYS added. 2201400400011 (20210315U) On. COMMENT modified. 2201400400012 ENDBIB 10 0 2201400400013 COMMON 1 3 2201400400014 ERR-2 2201400400015 PER-CENT 2201400400016 1.0 2201400400017 ENDCOMMON 3 0 2201400400018 DATA 4 30 2201400400019 EN EN-RSL DATA ERR-T 2201400400020 MEV MEV NO-DIM PER-CENT 2201400400021 4.9E-01 8.0E-02 3.980E-01 1.9 2201400400022 5.7E-01 8.0E-02 6.733E-01 1.9 2201400400023 6.8E-01 7.0E-02 9.239E-01 1.9 2201400400024 7.6E-01 7.0E-02 1.087E+00 1.9 2201400400025 8.6E-01 6.0E-02 1.053E+00 1.9 2201400400026 1.00 7.0E-02 8.932E-01 1.9 2201400400027 1.18 6.0E-02 1.005 1.9 2201400400028 1.29 2.1E-01 1.034 1.8 2201400400029 1.30 6.0E-02 1.034 1.9 2201400400030 1.44 5.0E-02 1.085 1.9 2201400400031 1.58 2.0E-01 1.174 1.8 2201400400032 1.59 5.0E-02 1.200 1.8 2201400400033 1.77 6.0E-02 1.216 1.7 2201400400034 1.90 2.0E-01 1.228 1.7 2201400400035 1.98 6.0E-02 1.217 1.7 2201400400036 2.20 2.2E-01 1.200 1.6 2201400400037 2.51 2.2E-01 1.216 1.7 2201400400038 2.80 2.2E-01 1.232 1.7 2201400400039 2.93 9.0E-02 1.207 1.8 2201400400040 3.50 2.6E-01 1.266 1.8 2201400400041 3.82 3.0E-01 1.273 1.7 2201400400042 4.37 3.2E-01 1.266 1.7 2201400400043 4.89 1.4E-01 1.249 1.7 2201400400044 5.25 1.4E-01 1.268 1.7 2201400400045 5.59 1.0E-01 1.290 1.7 2201400400046 5.86 8.0E-02 1.266 1.7 2201400400047 6.17 1.5E-01 1.254 1.7 2201400400048 6.47 1.6E-01 1.206 1.7 2201400400049 6.72 1.8E-01 1.185 1.7 2201400400050 6.97 1.0E-01 1.197 1.8 2201400400051 ENDDATA 32 0 2201400400052 ENDSUBENT 51 0 2201400499999 ENDENTRY 4 0 2201499999999