ENTRY 23186 20121026 22332318600000001 SUBENT 23186001 20121026 22332318600100001 BIB 14 63 2318600100002 TITLE Fission cross-section measurements of 237Np, 242mAm, 2318600100003 and 245Cm with lead slowing-down neutron spectrometer. 2318600100004 AUTHOR (K.Hirose,T.Ohtsuki,Y.Shibasaki,N.Iwasa,J.-I.Hori, 2318600100005 S.Sekimoto,K.Takamiya, H.Yashima, K.Nishio,Y.Kiyanagi) 2318600100006 INSTITUTE (2JPNKTO) J.-I.Hori,S.Sekimoto,K.Takamiya, H.Yashima 2318600100007 (2JPNTOH) K.Hirose,T.Ohtsuki,Y.Shibasaki,N.Iwasa 2318600100008 (2JPNJAE) K.Nishio 2318600100009 (2JPNHOK) Y.Kiyanagi - Graduate School of Engineering,2318600100010 Hokkaido University, Sapporo 060-8628, Japan. 2318600100011 REFERENCE (J,NST,49,(11),1057,2012) Data Tables. 2318600100012 (J,KPS,59,(2),1733,2011) Prelim.publication for Np. 2318600100013 FACILITY (LINAC,2JPNKTO) Electron linac accelerator, 2318600100014 lead slowing-down neutron spectrometer at the Research 2318600100015 Reactor Institute, Kyoto University - lead cube of 2318600100016 1.5x1.5x1.5 m**3 assembled by 1600 lead blocks of 2318600100017 20x10x10 cm**3 . 2318600100018 INC-SOURCE (PHOTO) Bremsstrahlung photons and subsequent neutrons 2318600100019 by (gamma,n) reactions.Photo-neutrons produced in the 2318600100020 tantalum target are slowed down in lead. 2318600100021 METHOD (SLODT) Energy of the neutrons En at the time-of-travel2318600100022 t in the lead was deduced from relation En=K/(t-t0)**2.2318600100023 Slowing-down parameters K=175+-1 keV micros**2 and 2318600100024 t0=1.7+-0.1 microsec were obtained from a calibration 2318600100025 measurement using resonance filters, In (1.46 eV), 2318600100026 Au (4.91 eV), Co (132 eV), Cu (230 and 579 eV). 2318600100027 (PHD) Fission fragments were discriminated from alphas 2318600100028 by the correlation between the pulse heights of the 2318600100029 first and the second anode signals. 2318600100030 For MA samples : by fitting the region between the 2318600100031 alphas and FF with two exponential functions, the 2318600100032 losses of the fission events and the contamination of 2318600100033 the alphas were estimated to be negligibly small <0.3%.2318600100034 The selection efficiency of the fission events for 2318600100035 235U(A) was deduced by comparing the fission-yield 2318600100036 ratio 245Cm/235U obtained using two 235U samples and 2318600100037 estimated to be (58.1+-0.2)% when the pulse-height 2318600100038 discrimination of 0.7 was applied. 2318600100039 DETECTOR (PPAC) Fission fragments are detected with MLPPAC - 2318600100040 multi-layered parallel-plate avalanche chamber. 2318600100041 Operated under the condition of 10 Torr isobutane gas 2318600100042 and the biases of -500 V on each cathode. 2318600100043 The fractions of dead time to the total run time 2318600100044 were 0.32% and 0.31% for the measurement 242mAm and 2318600100045 245Cm, respectively, for 237Np - much smaller. 2318600100046 (PROPC) Ar or BF3 proportional counters surrounded 2318600100047 by resonance filters were used in calibration 2318600100048 measurement. 2318600100049 (BF3) Neutron spectrum was separately measured with 2318600100050 BF3 proportional counter of 50 mm in effective length 2318600100051 and 12 mm in diameter. 2318600100052 MONITOR (5-B-10(N,A)3-LI-7,,SIG,,AV) 2318600100053 (92-U-235(N,F),,SIG,,AV) 2318600100054 Broadened according to the neutron-energy resolution 2318600100055 function, typically 40%. 2318600100056 INC-SPECT The neutron energy resolution function 2318600100057 (dEn/En)FWHM = (0.111+0.214/En+0.003*sqrt(En))**0.5 2318600100058 was obtained by fitting the data shown in Figure 5 and 2318600100059 Table 3 of REL-REF K.Kobayashi+ to lognormal 2318600100060 distribution. 2318600100061 REL-REF (R,,K.Kobayashi+,J,NIM/A,385,145,1997) 2318600100062 MONIT-REF (,,3,JENDL-4.0,,2010) For both monitors c-s. 2318600100063 PART-DET (FF,A) 2318600100064 HISTORY (20121026C) M.M. 2318600100065 ENDBIB 63 0 2318600100066 NOCOMMON 0 0 2318600100067 ENDSUBENT 66 0 2318600199999 SUBENT 23186002 20121026 22332318600200001 BIB 5 30 2318600200002 REACTION (93-NP-237(N,F),,SIG,,SDT) 2318600200003 Average in energy interval. 2318600200004 SAMPLE - 237Np sample was deposited on an alumina-membrane 2318600200005 filter (Whatman Anodisc) by filtration method. The 2318600200006 deposited area is 20 mm in diameter. 2318600200007 Ratio 239Pu/237Np was estimated to be 3.3E-3 % . 2318600200008 Number of atoms Np-237 (4.29+-0.02)*10**17. 2318600200009 - 235U sample was electrodeposited on stainless steel 2318600200010 plate with an active spot of 20 mm in diameter. 2318600200011 Impurities of 234U (<0.1%), 241Am (<0.001%), 243Am 2318600200012 (<0.1%), 242Cm (<1.E-7%) have almost no effect on 2318600200013 the n,f reaction due to their small c-s. 2318600200014 Number of atoms U-235 (1.51+-0.03)*10**16. 2318600200015 CORRECTION For background from Pu-239 impurity using JENDL-4.0. 2318600200016 ERR-ANALYS (ERR-T) Total uncertainty 2318600200017 (ERR-S) Statistical uncertainty 2318600200018 (ERR-SYS) Systematical uncertainty 13.% 2318600200019 (ERR-1) Uncertainty of number of atoms of Np-237 2318600200020 determined by alpha spectrometry. The uncertainties of2318600200021 the half-life, alpha emission, the solid angle for 2318600200022 alpha-particle detection, the alpha-counting statistics2318600200023 were taken into account. 2318600200024 (ERR-2) Number of atoms of 235U 2318600200025 (ERR-3) Selection of fission of Np-237. 2318600200026 (ERR-4,,0.1) Selection of fission of 235U 2318600200027 (ERR-5) Solid angle for Np-237 2318600200028 (ERR-6) Solid angle for 235U. 2318600200029 STATUS (TABLE) Table 2 of J,NST,49,(11),1057,2012. 2318600200030 Prelim.data (normalization to JENDL-3.3) on 2318600200031 Fig.4 of J,KPS,59,1733. 2318600200032 ENDBIB 30 0 2318600200033 COMMON 5 3 2318600200034 ERR-1 ERR-2 ERR-3 ERR-5 ERR-6 2318600200035 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2318600200036 12. 4.9 0.3 1.9 1.9 2318600200037 ENDCOMMON 3 0 2318600200038 DATA 5 85 2318600200039 EN-MIN EN-MAX DATA ERR-S ERR-SYS 2318600200040 EV EV B B B 2318600200041 0.100 0.112 3.89E-2 1.33E-2 0.51E-2 2318600200042 0.112 0.126 1.58E-2 0.96E-2 0.21E-2 2318600200043 0.126 0.141 2.62E-2 1.04E-2 0.34E-2 2318600200044 0.141 0.158 2.99E-2 1.04E-2 0.39E-2 2318600200045 0.158 0.178 4.11E-2 1.12E-2 0.53E-2 2318600200046 0.178 0.200 2.14E-2 0.90E-2 0.28E-2 2318600200047 0.200 0.251 2.15E-2 1.89E-2 0.28E-2 2318600200048 0.251 0.282 2.09E-2 0.91E-2 0.27E-2 2318600200049 0.282 0.316 2.41E-2 0.91E-2 0.31E-2 2318600200050 0.316 0.355 1.07E-2 0.77E-2 0.14E-2 2318600200051 0.355 0.447 8.47E-3 8.32E-3 1.10E-3 2318600200052 0.447 0.501 1.14E-2 0.58E-2 0.15E-2 2318600200053 0.501 0.562 3.71E-3 4.48E-3 0.48E-3 2318600200054 0.562 0.631 1.22E-2 0.46E-2 0.16E-2 2318600200055 0.631 0.708 7.43E-3 3.58E-3 0.97E-3 2318600200056 0.708 0.794 1.32E-2 0.37E-2 0.17E-2 2318600200057 0.794 0.891 1.76E-2 0.37E-2 0.23E-2 2318600200058 0.891 1.00 1.30E-2 0.31E-2 0.17E-2 2318600200059 1.00 1.12 1.63E-2 0.32E-2 0.21E-2 2318600200060 1.12 1.25 1.12E-2 0.26E-2 0.15E-2 2318600200061 1.25 1.41 1.65E-2 0.29E-2 0.21E-2 2318600200062 1.41 1.58 2.34E-2 0.33E-2 0.30E-2 2318600200063 1.58 1.77 1.68E-2 0.28E-2 0.22E-2 2318600200064 1.77 1.99 1.78E-2 0.27E-2 0.23E-2 2318600200065 1.99 2.23 1.13E-2 0.21E-2 0.15E-2 2318600200066 2.23 2.51 8.48E-3 1.79E-3 1.10E-3 2318600200067 2.51 2.81 4.98E-3 1.35E-3 0.65E-3 2318600200068 2.81 3.16 7.24E-3 1.56E-3 0.94E-3 2318600200069 3.16 3.54 1.23E-2 0.20E-2 0.16E-2 2318600200070 3.54 3.98 1.55E-2 0.21E-2 0.20E-2 2318600200071 3.98 4.46 1.79E-2 0.22E-2 0.23E-2 2318600200072 4.46 5.01 1.63E-2 0.21E-2 0.21E-2 2318600200073 5.01 5.62 2.25E-2 0.23E-2 0.29E-2 2318600200074 5.62 6.31 2.48E-2 0.24E-2 0.32E-2 2318600200075 6.31 7.07 1.99E-2 0.21E-2 0.26E-2 2318600200076 7.07 7.94 1.51E-2 0.18E-2 0.20E-2 2318600200077 7.94 8.91 1.59E-2 0.18E-2 0.21E-2 2318600200078 8.91 10.0 1.01E-2 0.15E-2 0.13E-2 2318600200079 10.0 11.2 7.94E-3 1.40E-3 1.03E-3 2318600200080 11.2 12.6 7.82E-3 1.40E-3 1.02E-3 2318600200081 12.6 14.1 6.52E-3 1.27E-3 0.85E-3 2318600200082 14.1 15.8 3.46E-3 1.01E-3 0.45E-3 2318600200083 15.8 17.8 5.76E-3 1.10E-3 0.75E-3 2318600200084 17.8 20.0 7.91E-3 1.15E-3 1.03E-3 2318600200085 20.0 22.4 1.91E-2 0.16E-2 0.25E-2 2318600200086 22.4 25.1 5.04E-2 0.25E-2 0.66E-2 2318600200087 25.1 28.2 1.00E-1 0.03E-1 0.13E-1 2318600200088 28.2 31.6 1.69E-1 0.05E-1 0.22E-1 2318600200089 31.6 35.5 2.88E-1 0.06E-1 0.37E-1 2318600200090 35.5 39.8 3.85E-1 0.07E-1 0.50E-1 2318600200091 39.8 44.7 4.04E-1 0.07E-1 0.53E-1 2318600200092 44.7 50.1 3.18E-1 0.06E-1 0.41E-1 2318600200093 50.1 56.2 2.09E-1 0.05E-1 0.27E-1 2318600200094 56.2 63.1 1.28E-1 0.04E-1 0.17E-1 2318600200095 63.1 70.8 9.12E-2 0.29E-2 1.19E-2 2318600200096 70.8 79.4 6.41E-2 0.23E-2 0.83E-2 2318600200097 79.4 89.1 5.86E-2 0.22E-2 0.76E-2 2318600200098 89.1 100. 6.12E-2 0.22E-2 0.79E-2 2318600200099 100. 112. 6.99E-2 0.23E-2 0.91E-2 2318600200100 112. 126. 7.95E-2 0.25E-2 1.03E-2 2318600200101 126. 141. 7.01E-2 0.22E-2 0.91E-2 2318600200102 141. 158. 6.69E-2 0.21E-2 0.87E-2 2318600200103 158. 178. 8.63E-2 0.24E-2 1.12E-2 2318600200104 178. 200. 1.01E-1 0.03E-1 0.13E-1 2318600200105 200. 224. 1.11E-1 0.03E-1 0.14E-1 2318600200106 224. 251. 9.77E-2 0.25E-2 1.27E-2 2318600200107 251. 282. 8.54E-2 0.23E-2 1.11E-2 2318600200108 282. 316. 7.49E-2 0.21E-2 0.97E-2 2318600200109 316. 355. 6.78E-2 0.20E-2 0.88E-2 2318600200110 355. 398. 6.02E-2 0.18E-2 0.78E-2 2318600200111 398. 447. 5.45E-2 0.17E-2 0.71E-2 2318600200112 447. 501. 4.40E-2 0.15E-2 0.57E-2 2318600200113 501. 562. 4.28E-2 0.15E-2 0.56E-2 2318600200114 562. 631. 4.09E-2 0.14E-2 0.53E-2 2318600200115 631. 708. 3.85E-2 0.13E-2 0.50E-2 2318600200116 708. 794. 3.65E-2 0.13E-2 0.47E-2 2318600200117 794. 891. 3.93E-2 0.13E-2 0.51E-2 2318600200118 891. 1000. 4.19E-2 0.13E-2 0.54E-2 2318600200119 1000. 1122. 4.30E-2 0.13E-2 0.56E-2 2318600200120 1122. 1259. 3.93E-2 0.12E-2 0.51E-2 2318600200121 1259. 1413. 3.74E-2 0.12E-2 0.49E-2 2318600200122 1413. 1585. 3.36E-2 0.11E-2 0.44E-2 2318600200123 1585. 1778. 2.98E-2 0.10E-2 0.39E-2 2318600200124 1778. 1995. 2.64E-2 0.09E-2 0.34E-2 2318600200125 1995. 2239. 2.75E-2 0.09E-2 0.36E-2 2318600200126 ENDDATA 87 0 2318600200127 ENDSUBENT 126 0 2318600299999 SUBENT 23186003 20121026 22332318600300001 BIB 4 26 2318600300002 REACTION (95-AM-242-M(N,F),,SIG,,SDT) 2318600300003 Average in energy interval. 2318600300004 SAMPLE 242mAm sample was electrodeposited on a stainless 2318600300005 steel plate with an active spot of 20 mm in diameter. 2318600300006 Impurities of 241,243Am, 242Cm were estimated to be 2318600300007 45.0, 12.5, 0.30 % relative to the number of the 2318600300008 242mAm atoms, respectively, by alpha-spectrometry. 2318600300009 Number of atoms Am-242m (2.08+-0.04)*10**16 . 2318600300010 - 235U sample A prepared by the filtration method, 2318600300011 234U impurity less than 0.1% was found by alpha 2318600300012 spectrometry. 2318600300013 Number of atoms U-235 (3.72+-0.04)*10**16 . 2318600300014 ERR-ANALYS (ERR-T) Total uncertainty . 2318600300015 (ERR-S) Statistical uncertainty 2318600300016 (ERR-SYS) Systematical uncertainty 14.% . 2318600300017 (ERR-1) Uncertainty of number of atoms of Am-242m 2318600300018 determined by alpha spectrometry. The uncertainties of2318600300019 the half-life, alpha emission, the solid angle for 2318600300020 alpha-particle detection, the alpha-counting statistics2318600300021 were taken into account. 2318600300022 (ERR-2) Number of atoms of 235U 2318600300023 (ERR-3,,0.1) Selection of fission of Am-242m. 2318600300024 (ERR-4) Selection of fission of 235U 2318600300025 (ERR-5) Solid angle for Am-242m 2318600300026 (ERR-6) Solid angle for 235U. 2318600300027 STATUS (TABLE) Table 3 of J,NST,49,(11),1057,2012. 2318600300028 ENDBIB 26 0 2318600300029 COMMON 5 3 2318600300030 ERR-1 ERR-2 ERR-4 ERR-5 ERR-6 2318600300031 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2318600300032 7.2 5.2 10. 2.1 2.1 2318600300033 ENDCOMMON 3 0 2318600300034 DATA 5 87 2318600300035 EN-MIN EN-MAX DATA ERR-S ERR-SYS 2318600300036 EV EV B B B 2318600300037 0.100 0.112 5.20E+3 0.07E+3 0.73E+3 2318600300038 0.112 0.126 5.11E+3 0.07E+3 0.71E+3 2318600300039 0.126 0.141 4.75E+3 0.06E+3 0.66E+3 2318600300040 0.141 0.158 4.64E+3 0.06E+3 0.65E+3 2318600300041 0.158 0.178 4.44E+3 0.05E+3 0.62E+3 2318600300042 0.178 0.200 4.12E+3 0.05E+3 0.58E+3 2318600300043 0.200 0.224 3.85E+3 0.04E+3 0.54E+3 2318600300044 0.224 0.251 3.50E+3 0.04E+3 0.49E+3 2318600300045 0.251 0.282 3.21E+3 0.04E+3 0.45E+3 2318600300046 0.282 0.316 2.86E+3 0.03E+3 0.40E+3 2318600300047 0.316 0.355 2.51E+3 0.03E+3 0.35E+3 2318600300048 0.355 0.398 2.28E+3 0.02E+3 0.32E+3 2318600300049 0.398 0.447 2.00E+3 0.02E+3 0.28E+3 2318600300050 0.447 0.501 1.79E+3 0.02E+3 0.25E+3 2318600300051 0.501 0.562 1.64E+3 0.02E+3 0.23E+3 2318600300052 0.562 0.631 1.49E+3 0.02E+3 0.21E+3 2318600300053 0.631 0.708 1.32E+3 0.01E+3 0.19E+3 2318600300054 0.708 0.794 1.20E+3 0.01E+3 0.17E+3 2318600300055 0.794 0.891 1.05E+3 0.01E+3 0.15E+3 2318600300056 0.891 1.00 9.54E+2 0.10E+2 1.34E+2 2318600300057 1.00 1.12 8.51E+2 0.09E+2 1.19E+2 2318600300058 1.12 1.26 7.69E+2 0.08E+2 1.08E+2 2318600300059 1.26 1.41 6.90E+2 0.07E+2 0.97E+2 2318600300060 1.41 1.58 6.06E+2 0.06E+2 0.85E+2 2318600300061 1.58 1.78 5.74E+2 0.06E+2 0.80E+2 2318600300062 1.78 2.00 5.25E+2 0.06E+2 0.74E+2 2318600300063 2.00 2.24 4.79E+2 0.05E+2 0.67E+2 2318600300064 2.24 2.51 4.37E+2 0.05E+2 0.61E+2 2318600300065 2.51 2.82 4.07E+2 0.04E+2 0.57E+2 2318600300066 2.82 3.16 3.87E+2 0.04E+2 0.54E+2 2318600300067 3.16 3.55 3.70E+2 0.04E+2 0.52E+2 2318600300068 3.55 3.98 3.42E+2 0.04E+2 0.48E+2 2318600300069 3.98 4.47 3.12E+2 0.03E+2 0.44E+2 2318600300070 4.47 5.01 2.84E+2 0.03E+2 0.40E+2 2318600300071 5.01 5.62 2.68E+2 0.03E+2 0.37E+2 2318600300072 5.62 6.31 2.42E+2 0.03E+2 0.34E+2 2318600300073 6.31 7.08 2.12E+2 0.02E+2 0.30E+2 2318600300074 7.08 7.94 1.79E+2 0.02E+2 0.25E+2 2318600300075 7.94 8.91 1.54E+2 0.02E+2 0.22E+2 2318600300076 8.91 10.0 1.45E+2 0.02E+2 0.20E+2 2318600300077 10.0 11.2 1.39E+2 0.02E+2 0.19E+2 2318600300078 11.2 12.6 1.43E+2 0.02E+2 0.20E+2 2318600300079 12.6 14.1 1.47E+2 0.02E+2 0.21E+2 2318600300080 14.1 15.8 1.45E+2 0.02E+2 0.20E+2 2318600300081 15.8 17.8 1.41E+2 0.02E+2 0.20E+2 2318600300082 17.8 20.0 1.32E+2 0.02E+2 0.19E+2 2318600300083 20.0 22.4 1.22E+2 0.01E+2 0.17E+2 2318600300084 22.4 25.1 1.13E+2 0.01E+2 0.16E+2 2318600300085 25.1 28.2 1.06E+2 0.01E+2 0.15E+2 2318600300086 28.2 31.6 1.01E+2 0.01E+2 0.14E+2 2318600300087 31.6 35.5 9.50E+1 0.11E+1 1.33E+1 2318600300088 35.5 39.8 8.65E+1 0.10E+1 1.21E+1 2318600300089 39.8 44.7 7.84E+1 0.10E+1 1.10E+1 2318600300090 44.7 50.1 7.71E+1 0.09E+1 1.08E+1 2318600300091 50.1 56.2 7.33E+1 0.09E+1 1.03E+1 2318600300092 56.2 63.1 6.96E+1 0.09E+1 0.97E+1 2318600300093 63.1 70.8 6.49E+1 0.08E+1 0.91E+1 2318600300094 70.8 79.4 5.94E+1 0.08E+1 0.83E+1 2318600300095 79.4 89.1 5.63E+1 0.07E+1 0.79E+1 2318600300096 89.1 100. 5.13E+1 0.07E+1 0.72E+1 2318600300097 100. 112. 4.74E+1 0.06E+1 0.66E+1 2318600300098 112. 126. 4.52E+1 0.06E+1 0.63E+1 2318600300099 126. 141. 4.18E+1 0.06E+1 0.59E+1 2318600300100 141. 158. 3.94E+1 0.05E+1 0.55E+1 2318600300101 158. 178. 3.89E+1 0.05E+1 0.54E+1 2318600300102 178. 200. 3.86E+1 0.05E+1 0.54E+1 2318600300103 200. 224. 3.64E+1 0.05E+1 0.51E+1 2318600300104 224. 251. 3.37E+1 0.05E+1 0.47E+1 2318600300105 251. 282. 3.33E+1 0.05E+1 0.47E+1 2318600300106 282. 316. 2.88E+1 0.04E+1 0.40E+1 2318600300107 316. 355. 2.70E+1 0.04E+1 0.38E+1 2318600300108 355. 398. 2.35E+1 0.04E+1 0.33E+1 2318600300109 398. 447. 2.27E+1 0.03E+1 0.32E+1 2318600300110 447. 501. 2.10E+1 0.03E+1 0.29E+1 2318600300111 501. 562. 2.01E+1 0.03E+1 0.28E+1 2318600300112 562. 631. 1.89E+1 0.03E+1 0.27E+1 2318600300113 631. 708. 1.78E+1 0.03E+1 0.25E+1 2318600300114 708. 794. 1.71E+1 0.03E+1 0.24E+1 2318600300115 794. 891. 1.61E+1 0.03E+1 0.23E+1 2318600300116 891. 1000. 1.53E+1 0.02E+1 0.21E+1 2318600300117 1000. 1122. 1.43E+1 0.02E+1 0.20E+1 2318600300118 1122. 1259. 1.34E+1 0.02E+1 0.19E+1 2318600300119 1259. 1413. 1.31E+1 0.02E+1 0.18E+1 2318600300120 1413. 1585. 1.24E+1 0.02E+1 0.17E+1 2318600300121 1585. 1778. 1.19E+1 0.02E+1 0.17E+1 2318600300122 1778. 1995. 1.08E+1 0.02E+1 0.15E+1 2318600300123 1995. 2239. 1.03E+1 0.02E+1 0.14E+1 2318600300124 ENDDATA 89 0 2318600300125 ENDSUBENT 124 0 2318600399999 SUBENT 23186004 20121026 22332318600400001 BIB 5 36 2318600400002 REACTION (96-CM-245(N,F),,SIG,,SDT) 2318600400003 Average in energy interval. 2318600400004 SAMPLE 245Cm sample from Oak Ridge National Lab., USA. 2318600400005 Cm-245, the second decay daughter of 249Bk(HL=320 d), 2318600400006 was separated from 249Cf (HL=351 d) by cation-exchange 2318600400007 method. After the separation, the sample was 2318600400008 electrodeposited on a stainless steel plate with an 2318600400009 active spot of 12.7 mm in diameter. 2318600400010 Ratios of the impurities were determined by alpha and 2318600400011 gamma spectrometry to be 244Cm/245Cm = 1.52E-3 % and 2318600400012 249Cf/245Cm = 1.87E-3 %. 2318600400013 Number of atoms Cm-245 (2.56+-0.01)*10**17 . 2318600400014 - 235U samples prepared by the filtration method, 2318600400015 234U impurity less than 0.1% was found by alpha 2318600400016 spectrometry. 2318600400017 Number of atoms U-235 : 2318600400018 sample A (3.72+-0.04)*10**16, 2318600400019 sample B (2.67+-0.05)*10**16 . 2318600400020 Cm-245 c-s was measured two times using different 2318600400021 reference samples. 2318600400022 CORRECTION Backgrounds from Cm245 sample impurities were not taken2318600400023 into account. 2318600400024 ERR-ANALYS (ERR-T) Total uncertainty . 2318600400025 (ERR-S) Statistical uncertainty 2318600400026 (ERR-SYS) Systematical uncertainty 8.7% . 2318600400027 (ERR-1) Uncertainty of number of atoms of Cm-245 2318600400028 determined by alpha spectrometry. The uncertainties of2318600400029 the half-life, alpha emission, the solid angle for 2318600400030 alpha-particle detection, the alpha-counting statistics2318600400031 were taken into account. 2318600400032 (ERR-2) Number of atoms of 235U 2318600400033 (ERR-3,,0.1) Selection of fission of Cm-245 . 2318600400034 (ERR-4) Selection of fission of 235U 2318600400035 (ERR-5) Solid angle for Cm-245 2318600400036 (ERR-6) Solid angle for 235U. 2318600400037 STATUS (TABLE) Table 4 of J,NST,49,(11),1057,2012. 2318600400038 ENDBIB 36 0 2318600400039 COMMON 5 3 2318600400040 ERR-1 ERR-2 ERR-4 ERR-5 ERR-6 2318600400041 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2318600400042 2.4 4.9 0.2 5.6 3.9 2318600400043 ENDCOMMON 3 0 2318600400044 DATA 5 87 2318600400045 EN-MIN EN-MAX DATA ERR-S ERR-SYS 2318600400046 EV EV B B B 2318600400047 0.100 0.112 9.45E+2 0.16E+2 0.82E+2 2318600400048 0.112 0.126 8.80E+2 0.15E+2 0.77E+2 2318600400049 0.126 0.141 7.69E+2 0.13E+2 0.67E+2 2318600400050 0.141 0.158 7.18E+2 0.12E+2 0.62E+2 2318600400051 0.158 0.178 6.58E+2 0.10E+2 0.57E+2 2318600400052 0.178 0.200 5.90E+2 0.09E+2 0.51E+2 2318600400053 0.200 0.224 5.44E+2 0.08E+2 0.47E+2 2318600400054 0.224 0.251 4.96E+2 0.08E+2 0.43E+2 2318600400055 0.251 0.282 4.61E+2 0.07E+2 0.40E+2 2318600400056 0.282 0.316 4.24E+2 0.06E+2 0.37E+2 2318600400057 0.316 0.355 3.82E+2 0.06E+2 0.33E+2 2318600400058 0.355 0.398 3.56E+2 0.05E+2 0.31E+2 2318600400059 0.398 0.447 3.34E+2 0.05E+2 0.29E+2 2318600400060 0.447 0.501 3.08E+2 0.04E+2 0.27E+2 2318600400061 0.501 0.562 2.92E+2 0.04E+2 0.25E+2 2318600400062 0.562 0.631 2.82E+2 0.04E+2 0.24E+2 2318600400063 0.631 0.708 2.66E+2 0.04E+2 0.23E+2 2318600400064 0.708 0.794 2.53E+2 0.04E+2 0.22E+2 2318600400065 0.794 0.891 2.36E+2 0.03E+2 0.21E+2 2318600400066 0.891 1.00 2.29E+2 0.03E+2 0.20E+2 2318600400067 1.00 1.12 2.13E+2 0.03E+2 0.19E+2 2318600400068 1.12 1.26 1.94E+2 0.03E+2 0.17E+2 2318600400069 1.26 1.41 1.88E+2 0.03E+2 0.16E+2 2318600400070 1.41 1.58 1.88E+2 0.03E+2 0.16E+2 2318600400071 1.58 1.78 2.14E+2 0.03E+2 0.19E+2 2318600400072 1.78 2.00 2.35E+2 0.03E+2 0.20E+2 2318600400073 2.00 2.24 2.35E+2 0.03E+2 0.20E+2 2318600400074 2.24 2.51 2.13E+2 0.03E+2 0.19E+2 2318600400075 2.51 2.82 1.79E+2 0.02E+2 0.16E+2 2318600400076 2.82 3.16 1.47E+2 0.02E+2 0.13E+2 2318600400077 3.16 3.55 1.50E+2 0.02E+2 0.13E+2 2318600400078 3.55 3.98 1.89E+2 0.02E+2 0.16E+2 2318600400079 3.98 4.47 2.56E+2 0.03E+2 0.22E+2 2318600400080 4.47 5.01 2.84E+2 0.03E+2 0.25E+2 2318600400081 5.01 5.62 2.67E+2 0.03E+2 0.23E+2 2318600400082 5.62 6.31 2.26E+2 0.03E+2 0.20E+2 2318600400083 6.31 7.08 2.10E+2 0.02E+2 0.18E+2 2318600400084 7.08 7.94 2.06E+2 0.02E+2 0.18E+2 2318600400085 7.94 8.91 1.82E+2 0.02E+2 0.16E+2 2318600400086 8.91 10.0 1.59E+2 0.02E+2 0.14E+2 2318600400087 10.0 11.2 1.24E+2 0.01E+2 0.11E+2 2318600400088 11.2 12.6 1.00E+2 0.01E+2 0.09E+2 2318600400089 12.6 14.1 7.93E+1 0.10E+1 0.69E+1 2318600400090 14.1 15.8 6.47E+1 0.09E+1 0.56E+1 2318600400091 15.8 17.8 5.99E+1 0.08E+1 0.52E+1 2318600400092 17.8 20.0 6.25E+1 0.08E+1 0.54E+1 2318600400093 20.0 22.4 7.29E+1 0.09E+1 0.63E+1 2318600400094 22.4 25.1 8.01E+1 0.10E+1 0.70E+1 2318600400095 25.1 28.2 8.03E+1 0.10E+1 0.70E+1 2318600400096 28.2 31.6 7.98E+1 0.10E+1 0.69E+1 2318600400097 31.6 35.5 7.88E+1 0.09E+1 0.69E+1 2318600400098 35.5 39.8 7.61E+1 0.09E+1 0.66E+1 2318600400099 39.8 44.7 7.88E+1 0.09E+1 0.69E+1 2318600400100 44.7 50.1 8.19E+1 0.10E+1 0.71E+1 2318600400101 50.1 56.2 8.21E+1 0.10E+1 0.71E+1 2318600400102 56.2 63.1 7.72E+1 0.09E+1 0.67E+1 2318600400103 63.1 70.8 7.15E+1 0.09E+1 0.62E+1 2318600400104 70.8 79.4 6.25E+1 0.08E+1 0.54E+1 2318600400105 79.4 89.1 6.00E+1 0.07E+1 0.52E+1 2318600400106 89.1 100. 5.73E+1 0.07E+1 0.50E+1 2318600400107 100. 112. 5.44E+1 0.07E+1 0.47E+1 2318600400108 112. 126. 5.33E+1 0.07E+1 0.46E+1 2318600400109 126. 141. 4.73E+1 0.06E+1 0.41E+1 2318600400110 141. 158. 4.30E+1 0.06E+1 0.37E+1 2318600400111 158. 178. 3.85E+1 0.05E+1 0.33E+1 2318600400112 178. 200. 3.52E+1 0.05E+1 0.31E+1 2318600400113 200. 224. 3.30E+1 0.05E+1 0.29E+1 2318600400114 224. 251. 3.06E+1 0.04E+1 0.27E+1 2318600400115 251. 282. 3.03E+1 0.04E+1 0.26E+1 2318600400116 282. 316. 2.71E+1 0.04E+1 0.24E+1 2318600400117 316. 355. 2.60E+1 0.04E+1 0.23E+1 2318600400118 355. 398. 2.34E+1 0.03E+1 0.20E+1 2318600400119 398. 447. 2.29E+1 0.03E+1 0.20E+1 2318600400120 447. 501. 2.16E+1 0.03E+1 0.19E+1 2318600400121 501. 562. 2.01E+1 0.03E+1 0.17E+1 2318600400122 562. 631. 1.89E+1 0.03E+1 0.16E+1 2318600400123 631. 708. 1.74E+1 0.03E+1 0.15E+1 2318600400124 708. 794. 1.66E+1 0.03E+1 0.14E+1 2318600400125 794. 891. 1.62E+1 0.03E+1 0.14E+1 2318600400126 891. 1000. 1.63E+1 0.03E+1 0.14E+1 2318600400127 1000. 1122. 1.58E+1 0.03E+1 0.14E+1 2318600400128 1122. 1259. 1.45E+1 0.02E+1 0.13E+1 2318600400129 1259. 1413. 1.41E+1 0.02E+1 0.12E+1 2318600400130 1413. 1585. 1.31E+1 0.02E+1 0.11E+1 2318600400131 1585. 1778. 1.25E+1 0.02E+1 0.11E+1 2318600400132 1778. 1995. 1.17E+1 0.02E+1 0.10E+1 2318600400133 1995. 2239. 1.11E+1 0.02E+1 0.10E+1 2318600400134 ENDDATA 89 0 2318600400135 ENDSUBENT 134 0 2318600499999 ENDENTRY 4 0 2318699999999