ENTRY 14302 20110801 13751430200000001 SUBENT 14302001 20110801 13751430200100001 BIB 10 35 1430200100002 TITLE The Neutron Transmission of Single-Crystal Sapphire 1430200100003 Filters 1430200100004 AUTHOR (D.F.R.Mildner,M.Arif,C.A.Stone,R.K.Crawford) 1430200100005 INSTITUTE (1USANIS,1USAANL) 1430200100006 REFERENCE (J,JAC,26,438,1993) 1430200100007 FACILITY (LINAC,1USAANL) Experiment performed at the Intense 1430200100008 Pulsed Neutron Source (IPNS) at Argonne National 1430200100009 Laboratory. 1430200100010 SAMPLE Three sapphire (aluminium oxide A1203) samples of 1430200100011 premium 'hemex' grade, which is highest available 1430200100012 grade of sapphire and is almost free of lattice 1430200100013 distortion were used in experiment at ambient 1430200100014 temperature. The size of each of the crystals was 1430200100015 25.4 x 25.4 x 27.0 mm3, with the c axis parallel to 1430200100016 the 27.0 mm edge. The faces perpendicular to the c 1430200100017 axis were optically polished. 1430200100018 DETECTOR (BF3,IOCH) The measurements were recorded as a 1430200100019 function of time of flight using two flat ('pancake') 1430200100020 detectors, low-efficiency BF3 ionization chambers, 1430200100021 placed before the collimation and after the sample at 1430200100022 distances of 5.9 and 9.0m, respectively, from the 1430200100023 liquid-hydrogen moderator. 1430200100024 (HE3SP)An additional He3 detector was placed 1430200100025 immediately after the second pancake BF3 detector. 1430200100026 METHOD (TOF,TRN) The source operated at 30 Hz. Total cross 1430200100027 section measured using transmission method 1430200100028 INC-SOURCE (SPALL) Neutrons were produced by 450 MeV protons 1430200100029 impinging on enriched uranium target. The neutron 1430200100030 transmission measurements were obtained on the C3 1430200100031 beam line, which views a 20K liquid-hydrogen moderator.1430200100032 Delayed neutron fraction was 0.0283 which results in a 1430200100033 time-independent background, The spectrum peaks around 1430200100034 0.25 nm, indicating an effective moderator temperature 1430200100035 of 60 K 1430200100036 HISTORY (20110801C) Compiled by S.H. 1430200100037 ENDBIB 35 0 1430200100038 NOCOMMON 0 0 1430200100039 ENDSUBENT 38 0 1430200199999 SUBENT 14302002 20110801 13751430200200001 BIB 3 3 1430200200002 REACTION (13-AL-OXI(N,TOT),,SIG) cross section per molecule 1430200200003 ERR-ANALYS No information on uncertainty 1430200200004 STATUS (CURVE) Data taken from fig. 6 of the reference 1430200200005 ENDBIB 3 0 1430200200006 NOCOMMON 0 0 1430200200007 DATA 2 140 1430200200008 EN DATA 1430200200009 EV B 1430200200010 1.01E-03 2.19E+00 1430200200011 1.04E-03 2.72E+00 1430200200012 1.08E-03 2.57E+00 1430200200013 1.13E-03 2.81E+00 1430200200014 1.17E-03 2.67E+00 1430200200015 1.22E-03 2.53E+00 1430200200016 1.26E-03 2.75E+00 1430200200017 1.29E-03 2.61E+00 1430200200018 1.32E-03 2.78E+00 1430200200019 1.35E-03 2.52E+00 1430200200020 1.41E-03 2.08E+00 1430200200021 1.43E-03 2.33E+00 1430200200022 1.50E-03 2.04E+00 1430200200023 1.52E-03 2.46E+00 1430200200024 1.56E-03 2.17E+00 1430200200025 1.61E-03 2.61E+00 1430200200026 1.64E-03 2.18E+00 1430200200027 1.67E-03 1.92E+00 1430200200028 1.73E-03 2.35E+00 1430200200029 1.76E-03 2.07E+00 1430200200030 1.80E-03 2.15E+00 1430200200031 1.85E-03 1.88E+00 1430200200032 1.90E-03 2.07E+00 1430200200033 1.95E-03 1.95E+00 1430200200034 2.04E-03 1.97E+00 1430200200035 2.14E-03 1.78E+00 1430200200036 2.21E-03 1.90E+00 1430200200037 2.31E-03 1.55E+00 1430200200038 2.40E-03 1.71E+00 1430200200039 2.46E-03 1.91E+00 1430200200040 2.54E-03 1.59E+00 1430200200041 2.60E-03 1.84E+00 1430200200042 2.67E-03 1.66E+00 1430200200043 2.75E-03 1.59E+00 1430200200044 2.82E-03 1.45E+00 1430200200045 2.91E-03 1.50E+00 1430200200046 3.02E-03 1.45E+00 1430200200047 3.11E-03 1.37E+00 1430200200048 3.20E-03 1.55E+00 1430200200049 3.37E-03 1.32E+00 1430200200050 3.41E-03 1.41E+00 1430200200051 3.52E-03 1.55E+00 1430200200052 3.63E-03 1.35E+00 1430200200053 3.76E-03 1.33E+00 1430200200054 3.91E-03 1.16E+00 1430200200055 4.03E-03 1.18E+00 1430200200056 4.16E-03 1.30E+00 1430200200057 4.31E-03 1.38E+00 1430200200058 4.50E-03 1.33E+00 1430200200059 4.64E-03 1.20E+00 1430200200060 4.91E-03 1.13E+00 1430200200061 5.16E-03 1.16E+00 1430200200062 5.27E-03 1.35E+00 1430200200063 5.39E-03 1.16E+00 1430200200064 5.50E-03 9.83E-01 1430200200065 5.68E-03 1.21E+00 1430200200066 5.86E-03 1.16E+00 1430200200067 5.92E-03 8.54E-01 1430200200068 6.08E-03 8.85E-01 1430200200069 6.19E-03 9.42E-01 1430200200070 6.50E-03 9.94E-01 1430200200071 6.53E-03 8.84E-01 1430200200072 6.82E-03 9.02E-01 1430200200073 6.99E-03 5.99E-01 1430200200074 7.12E-03 7.53E-01 1430200200075 7.29E-03 8.24E-01 1430200200076 7.48E-03 8.77E-01 1430200200077 7.68E-03 7.83E-01 1430200200078 7.88E-03 7.50E-01 1430200200079 8.16E-03 7.07E-01 1430200200080 8.46E-03 7.89E-01 1430200200081 8.70E-03 9.62E-01 1430200200082 9.08E-03 7.61E-01 1430200200083 9.39E-03 6.77E-01 1430200200084 9.66E-03 8.20E-01 1430200200085 9.94E-03 6.09E-01 1430200200086 1.02E-02 8.56E-01 1430200200087 1.04E-02 6.90E-01 1430200200088 1.08E-02 8.26E-01 1430200200089 1.11E-02 6.93E-01 1430200200090 1.14E-02 7.67E-01 1430200200091 1.18E-02 7.06E-01 1430200200092 1.21E-02 5.37E-01 1430200200093 1.25E-02 6.71E-01 1430200200094 1.29E-02 7.31E-01 1430200200095 1.33E-02 6.50E-01 1430200200096 1.37E-02 5.54E-01 1430200200097 1.42E-02 6.84E-01 1430200200098 1.47E-02 6.92E-01 1430200200099 1.52E-02 6.65E-01 1430200200100 1.58E-02 5.24E-01 1430200200101 1.63E-02 6.42E-01 1430200200102 1.68E-02 8.67E-01 1430200200103 1.76E-02 6.78E-01 1430200200104 1.83E-02 6.49E-01 1430200200105 1.88E-02 6.03E-01 1430200200106 1.97E-02 5.64E-01 1430200200107 2.03E-02 6.54E-01 1430200200108 2.12E-02 7.67E-01 1430200200109 2.21E-02 8.14E-01 1430200200110 2.30E-02 8.73E-01 1430200200111 2.39E-02 6.46E-01 1430200200112 2.50E-02 6.93E-01 1430200200113 2.61E-02 6.04E-01 1430200200114 2.73E-02 6.77E-01 1430200200115 2.85E-02 5.79E-01 1430200200116 3.00E-02 5.99E-01 1430200200117 3.14E-02 8.03E-01 1430200200118 3.29E-02 6.40E-01 1430200200119 3.46E-02 8.71E-01 1430200200120 3.67E-02 9.34E-01 1430200200121 3.86E-02 7.90E-01 1430200200122 4.09E-02 8.67E-01 1430200200123 4.36E-02 9.01E-01 1430200200124 4.60E-02 1.00E+00 1430200200125 4.89E-02 1.12E+00 1430200200126 5.15E-02 1.08E+00 1430200200127 5.51E-02 1.05E+00 1430200200128 5.92E-02 1.36E+00 1430200200129 6.32E-02 1.47E+00 1430200200130 6.78E-02 1.48E+00 1430200200131 7.31E-02 1.56E+00 1430200200132 7.89E-02 1.66E+00 1430200200133 8.55E-02 2.03E+00 1430200200134 9.30E-02 2.28E+00 1430200200135 1.00E-01 2.33E+00 1430200200136 1.10E-01 2.54E+00 1430200200137 1.21E-01 2.95E+00 1430200200138 1.33E-01 3.25E+00 1430200200139 1.49E-01 3.36E+00 1430200200140 1.65E-01 3.75E+00 1430200200141 1.86E-01 4.04E+00 1430200200142 2.09E-01 4.52E+00 1430200200143 2.38E-01 4.80E+00 1430200200144 2.74E-01 5.31E+00 1430200200145 3.18E-01 6.63E+00 1430200200146 3.72E-01 8.21E+00 1430200200147 4.45E-01 9.11E+00 1430200200148 5.36E-01 9.42E+00 1430200200149 6.67E-01 9.32E+00 1430200200150 ENDDATA 142 0 1430200200151 ENDSUBENT 150 0 1430200299999 ENDENTRY 2 0 1430299999999