ENTRY 23155 20111202 22312315500000001 SUBENT 23155001 20111202 22312315500100001 BIB 15 69 2315500100002 TITLE Measurement of keV-Neutron Capture Cross Section of 2315500100003 96Zr 2315500100004 AUTHOR (T.Katabuchi,M.Igashira,Y.Kiyanagi) 2315500100005 INSTITUTE (2JPNTIT) Research Laboratory for Nuclear Reactors, 2315500100006 Tokyo Institute of Technology, 2-12-1 Ookayama, 2315500100007 Meguro-ku, Tokyo 152-8550, Japan. T.Katabuchi, 2315500100008 M.Igashira 2315500100009 (2JPNHOK) Graduate School of Engineering, 2315500100010 Hokkaido University, Kita 13 Nishi 8, Kita-ku, 2315500100011 Sapporo, Hokkaido 060-8628, Japan. Kiyanagi 2315500100012 REFERENCE (J,NST,48,744,2011) 2315500100013 FACILITY (VDG,2JPNTIT) 3 MV Pelletron accelerator at the 2315500100014 Research Laboratory for Nuclear Reactors at the Tokyo 2315500100015 Institute of Technology 2315500100016 INC-SOURCE (P-LI7) A pulsed neutron beam was generated by the 2315500100017 7Li(p,n)7Be reaction induced by a pulsed proton beam 2315500100018 with a pulse width of 1.5 ns and a repetition rate of 2315500100019 4 MHz. 2315500100020 METHOD (TOF,PHD) Measurements of 96Zr, 197Au, and blank were 2315500100021 repeated cyclically, thereby changes in experimental 2315500100022 conditions such as incident neutron spectrum or proton2315500100023 beam intensity average out. 2315500100024 MONITOR (79-AU-197(N,G)79-AU-198-G,,SIG) 2315500100025 MONIT-REF (,P.G.Young+,3,ENDF/B-VI.8,7925,2001) ENDF/B-VI.8 data 2315500100026 for 197Au (MAT = 7925), evaluated by P.G.Young (1991) 2315500100027 SAMPLE .Two isotopically enriched 96Zr samples in chemical 2315500100028 form of ZrO2 powder were used. 2315500100029 A gold sample (15mm diam. x 1mm thick, 3.423 g) was 2315500100030 used as a standard for neutron capture cross section 2315500100031 Characteristics of 96Zr samples 2315500100032 Sample 1 Sample 2 Total sum 2315500100033 Weight of powder (g) 1.240 0.376 1.616 2315500100034 Chemical purity (%) 99.96 99.97 99.96 2315500100035 Isotopic composition (%) 2315500100036 90Zr 19.8 5.0 16.4 2315500100037 91Zr 5.3 1.88 4.5 2315500100038 92Zr 8.2 2.69 6.9 2315500100039 94Zr 8.4 4.03 7.4 2315500100040 96Zr 58.3 86.4 64.8 2315500100041 Net weight of sample (g) 0.550 0.245 0.795 2315500100042 Thickness of sample (mm) 3.9 1.3 5.2 2315500100043 ( x 10**(-3) atoms/barn) 1.95 0.870 2.82 2315500100044 Diameter of sample (mm) 15. 15. 2315500100045 DETECTOR (NAICR) NaI(Tl) spectrometer with anti-Compton 2315500100046 suppression. The spectrometer consists of a main 2315500100047 NaI(Tl) detector (152mm diam. x 305mm length) and an 2315500100048 annular anti-Compton NaI(Tl) detector (330mm outer 2315500100049 diam. x 172mm inner diam. x 356mm length) surrounding 2315500100050 the main NaI(Tl) crystal. 2315500100051 (SCIN) After transit through the samples, incident 2315500100052 neutron counts were relatively monitored with a 6Li 2315500100053 glass scintillation detector (scintillator size: 2315500100054 5mm diam. x 5mm thick). 2315500100055 REL-REF (I,22482001,S.Mizuno+,J,NST,36,493,1999) - experimental2315500100056 procedure described. 2315500100057 (I,,M.Igashira+,J,NIM/A,245,432,1986) - spectrometer 2315500100058 with anti-Compton suppression described. 2315500100059 (A,11399021,R.L.Macklin+,J,PR,107,504,1957) 2315500100060 (D,12831007,J.M.Wyrick+,S,ANL-83-4,196,1982) 2315500100061 ADD-RES (COMP) The evaluated cross sections of JENDL-4.0, 2315500100062 JENDL-3.3, ENDF/B-VII.0, and ENDF/B-VI.8 disagreed 2315500100063 with the experimental cross section in the high-energy2315500100064 region. All the evaluations are smaller by a factor of2315500100065 three to four at energies of 35-100 keV. Reevaluation 2315500100066 of the capture cross section of 96Zr, including the 2315500100067 present results, is desired. 2315500100068 CORRECTION .Corrections were made for self-shielding, multiple 2315500100069 scattering and samples impurity. 2315500100070 HISTORY (20111202C) S.M. 2315500100071 ENDBIB 69 0 2315500100072 NOCOMMON 0 0 2315500100073 ENDSUBENT 72 0 2315500199999 SUBENT 23155002 20111202 22312315500200001 BIB 4 22 2315500200002 REACTION (40-ZR-96(N,G)40-ZR-97,,SIG,,AV) Averaged over the 2315500200003 energy interval in DATA section 2315500200004 ERR-ANALYS (ERR-T) Total uncertainties are quadratic sum of: 2315500200005 (ERR-S) Error of the statistics in 96Zr 2315500200006 (ERR-1) Error of the weighting function 2315500200007 (MONIT-ERR) Error in Standard 197Au(n,gamma) 2315500200008 cross section 2315500200009 (ERR-2) Error in extrapolation of PH 2315500200010 spectrum (<0.6 MeV) of 96Zr 2315500200011 (ERR-3) Error in extrapolation of PH 2315500200012 spectrum (<0.6 MeV) of 197Au 2315500200013 (ERR-4) Error of the self-shielding and multiple 2315500200014 scattering of 96Zr 2315500200015 (ERR-5) Error of the self-shielding and multiple 2315500200016 scattering of 197Au 2315500200017 (ERR-6) Error in impurity correction (total sum for 2315500200018 impurities)(n,gamma) cross section 2315500200019 (ERR-7) Error of the self-shielding and 2315500200020 multiple scattering 2315500200021 (ERR-8) Error of the statistics in 197Au 2315500200022 MISC-COL (MISC) Average neutron energy from Table 5 2315500200023 STATUS (TABLE) Data from Tbl.5 of NST,48,744,2011 2315500200024 ENDBIB 22 0 2315500200025 COMMON 2 3 2315500200026 ERR-1 MONIT-ERR 2315500200027 PER-CENT PER-CENT 2315500200028 1.0 3.0 2315500200029 ENDCOMMON 3 0 2315500200030 DATA 13 4 2315500200031 EN-MIN EN-MAX DATA ERR-T ERR-S ERR-2 2315500200032 ERR-3 ERR-4 ERR-5 ERR-6 ERR-7 ERR-8 2315500200033 MISC 2315500200034 KEV KEV MB MB PER-CENT PER-CENT 2315500200035 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2315500200036 MEV 2315500200037 15. 25. 19.2 4.0 17.0 6.0 2315500200038 7.1 3.9 1.6 4.8 1.4 2.7 2315500200039 21. 2315500200040 25. 35. 17.2 2.8 12.5 4.9 2315500200041 6.9 1.9 1.4 4.0 0.9 2.1 2315500200042 30. 2315500200043 35. 55. 13.9 1.7 8.1 4.2 2315500200044 6.4 1.1 1.2 3.3 0.5 1.5 2315500200045 45. 2315500200046 55. 100. 13.3 1.6 9.5 3.7 2315500200047 5.2 0.5 0.9 2.6 0.2 1.6 2315500200048 69. 2315500200049 ENDDATA 18 0 2315500200050 ENDSUBENT 49 0 2315500299999 SUBENT 23155003 20111202 22312315500300001 BIB 3 8 2315500300002 REACTION (40-ZR-96(N,G)40-ZR-97,,MLT/DE,,AV/MSC) Averaged over 2315500300003 energy interval in COMMON section 2315500300004 Units of DATA are counts per 50 keV 2315500300005 ERR-ANALYS (EN-ERR-DIG) Digitizing energy error 2315500300006 (ERR-DIG) Digitizing data error 2315500300007 (DATA-ERR) Experimental error - bar on the graph 2315500300008 STATUS (CURVE) Data digitized from Fig.4 of NST,48,744,2011. 2315500300009 Request for data sent to Katabichi 2012-01-09 2315500300010 ENDBIB 8 0 2315500300011 COMMON 4 3 2315500300012 EN-MIN EN-MAX EN-ERR-DIG ERR-DIG 2315500300013 MEV MEV MEV PER-CENT 2315500300014 15. 100. 0.59807E-020.14087E-01 2315500300015 ENDCOMMON 3 0 2315500300016 DATA 3 155 2315500300017 E DATA DATA-ERR 2315500300018 MEV ARB-UNITS ARB-UNITS 2315500300019 0.59380 780.57 242.27 2315500300020 0.64638 313.51 215.79 2315500300021 0.69771 397.18 217.64 2315500300022 0.74876 648.31 215.68 2315500300023 0.78306 705.47 218.96 2315500300024 0.85231 454.73 194.33 2315500300025 0.88646 566.43 201.31 2315500300026 0.95438 1253.2 181.34 2315500300027 0.99073 205.59 185.07 2315500300028 1.0415 447.20 201.30 2315500300029 1.0925 742.39 198.08 2315500300030 1.1448 397.37 188.70 2315500300031 1.1960 529.59 188.22 2315500300032 1.2310 303.28 195.06 2315500300033 1.3000 264.96 210.82 2315500300034 1.3509 470.60 250.56 2315500300035 1.4020 768.15 327.13 2315500300036 1.4362 864.60 432.29 2315500300037 1.5239 179.70 267.75 2315500300038 1.6603 538.88 179.27 2315500300039 1.7126 265.08 160.33 2315500300040 1.7981 432.69 115.45 2315500300041 1.8505 202.32 91.078 2315500300042 1.9014 391.02 92.612 2315500300043 1.9527 470.90 77.326 2315500300044 2.0040 617.08 89.294 2315500300045 2.0733 391.09 77.118 2315500300046 2.1250 353.41 74.441 2315500300047 2.2110 347.53 91.116 2315500300048 2.2455 314.04 104.67 2315500300049 2.2971 293.53 84.159 2315500300050 2.3664 182.92 63.015 2315500300051 2.4520 269.80 55.097 2315500300052 2.4866 216.61 62.102 2315500300053 2.5549 330.47 67.487 2315500300054 2.5901 157.16 59.483 2315500300055 2.6419 132.74 66.334 2315500300056 2.6928 252.24 56.462 2315500300057 2.7959 269.90 56.846 2315500300058 2.8483 128.35 51.593 2315500300059 2.8990 279.20 58.806 2315500300060 2.9513 142.06 53.763 2315500300061 3.0021 293.75 53.901 2315500300062 3.0373 142.07 50.494 2315500300063 3.1062 132.80 56.752 2315500300064 3.1575 171.11 49.344 2315500300065 3.1922 128.40 51.049 2315500300066 3.2607 157.27 55.889 2315500300067 3.3296 144.54 51.363 2315500300068 3.3644 103.10 47.919 2315500300069 3.4153 177.04 56.999 2315500300070 3.4497 177.04 46.421 2315500300071 3.4839 209.63 47.116 2315500300072 3.5528 195.95 51.376 2315500300073 3.6042 224.32 45.809 2315500300074 3.6559 213.24 43.548 2315500300075 3.7078 162.75 42.674 2315500300076 3.7597 116.09 39.993 2315500300077 3.7935 192.72 39.356 2315500300078 3.8455 135.17 38.989 2315500300079 3.8974 98.062 39.977 2315500300080 3.9490 103.17 36.672 2315500300081 4.0002 144.64 32.505 2315500300082 4.0349 106.72 35.572 2315500300083 4.1041 76.128 36.064 2315500300084 4.1550 137.51 39.659 2315500300085 4.1726 91.680 35.507 2315500300086 4.2585 103.20 36.675 2315500300087 4.3102 87.162 37.249 2315500300088 4.3443 124.28 33.164 2315500300089 4.3961 93.264 35.148 2315500300090 4.4471 165.65 33.828 2315500300091 4.5158 171.35 38.508 2315500300092 4.5504 142.30 35.524 2315500300093 4.6021 137.58 30.798 2315500300094 4.6537 133.02 31.504 2315500300095 4.7225 128.61 33.722 2315500300096 4.7564 199.54 28.875 2315500300097 4.8086 114.27 35.462 2315500300098 4.8436 64.344 35.487 2315500300099 4.9122 80.153 37.971 2315500300100 4.9633 120.23 34.675 2315500300101 4.9986 51.666 35.559 2315500300102 5.1015 65.458 31.082 2315500300103 5.1525 112.40 28.058 2315500300104 5.2039 130.86 26.727 2315500300105 5.2558 103.31 25.788 2315500300106 5.2903 94.942 23.700 2315500300107 5.3590 93.358 28.980 2315500300108 5.4107 90.262 25.879 2315500300109 5.4445 152.39 27.960 2315500300110 5.5133 155.00 31.649 2315500300111 5.5468 331.51 29.218 2315500300112 5.5810 392.53 34.597 2315500300113 5.6502 284.78 27.451 2315500300114 5.7022 189.87 23.834 2315500300115 5.7541 133.17 27.195 2315500300116 5.7893 67.757 28.855 2315500300117 5.8408 73.732 29.639 2315500300118 5.8923 76.270 32.479 2315500300119 5.9447 37.518 32.580 2315500300120 6.0130 54.410 32.908 2315500300121 6.0467 101.66 31.553 2315500300122 6.0992 45.187 29.822 2315500300123 6.1342 26.318 27.188 2315500300124 6.2042 8.4864 24.856 2315500300125 6.2546 25.021 24.158 2315500300126 6.3056 43.695 25.543 2315500300127 6.3574 35.679 28.389 2315500300128 6.3910 72.539 27.452 2315500300129 6.4423 95.057 25.363 2315500300130 6.4951 31.704 26.325 2315500300131 6.5457 73.787 26.229 2315500300132 6.5976 59.241 25.885 2315500300133 6.6488 83.058 22.161 2315500300134 6.7012 39.499 27.187 2315500300135 6.7546 7.0513 28.643 2315500300136 6.8048 26.336 30.948 2315500300137 6.8556 55.385 32.010 2315500300138 6.9075 40.866 31.713 2315500300139 7.0121 10.228 28.622 2315500300140 7.0453 32.813 25.464 2315500300141 7.0960 71.377 23.745 2315500300142 7.1487 25.905 24.158 2315500300143 7.1997 43.003 26.008 2315500300144 7.2503 108.90 26.746 2315500300145 7.3034 25.909 27.662 2315500300146 7.3552 23.020 24.578 2315500300147 7.4065 29.661 25.756 2315500300148 7.5093 41.588 29.818 2315500300149 7.5970 8.2164 36.284 2315500300150 7.6463 65.633 37.932 2315500300151 7.7150 70.226 33.346 2315500300152 7.8198 16.153 26.877 2315500300153 7.8533 35.136 21.251 2315500300154 7.9054 21.895 19.014 2315500300155 7.9572 19.454 14.518 2315500300156 8.0461 1.2185 9.9230 2315500300157 8.1124 11.921 8.5474 2315500300158 8.2152 17.289 8.6436 2315500300159 8.3703 13.197 7.6265 2315500300160 8.4072 1.1986 8.2149 2315500300161 8.5763 16.721 9.2220 2315500300162 8.6642 2.7901 7.6302 2315500300163 8.7491 7.8198 6.7906 2315500300164 8.9046 3.8470 8.0842 2315500300165 8.9547 15.373 8.0788 2315500300166 9.0059 21.553 7.6596 2315500300167 9.0434 1.2198 7.5845 2315500300168 9.2137 5.8706 9.5065 2315500300169 9.5049 15.644 6.6622 2315500300170 9.7483 1.3739 5.1267 2315500300171 9.7995 1.9591 3.9152 2315500300172 10.006 2.1323 4.3701 2315500300173 10.056 6.9572 3.3035 2315500300174 ENDDATA 157 0 2315500300175 ENDSUBENT 174 0 2315500399999 ENDENTRY 3 0 2315599999999