ENTRY 13920 20160817 14221392000000001 SUBENT 13920001 20160817 14221392000100001 BIB 8 28 1392000100002 TITLE Differential Neutron Thermalization 1392000100003 AUTHOR (S.Boehm,A.K.Hom,R.Kronquist,D.Parks,H.Vieweg, 1392000100004 W.L.Whittemore) 1392000100005 REFERENCE (R,GA-5554,1964) 1392000100006 INSTITUTE (1USAGA) 1392000100007 FACILITY (LINAC,1USAGA) General Atomic linear accelerator. 1392000100008 (CHOPS,1USAGA) 1392000100009 DETECTOR (BF3,HE3SP) Each neutron detector bank is constructed 1392000100010 from either BF3 or He-3 detectors. The BF3 counter 1392000100011 banks cover an area of 8 x 20 in. The He-3 bank 1392000100012 consists of up to 5 one-inch thick detectors 20 in. 1392000100013 in length filled to a pressure of 10 atm. 1392000100014 METHOD (TOF) 6 m flight path, additional 2m from target to 1392000100015 detectors. Typically, the detectors are located at 1392000100016 nominal scattering angles of 30, 60, 90, 120, and 1392000100017 150 deg. Measurement of the scattering kernel 1392000100018 dsigma/dthetadE, in units of barn per steradian per 1392000100019 electron-volt per molecule of scattering material, 1392000100020 uses a comparison technique, with vanadium as the 1392000100021 standard. The scattering cross section from vanadium 1392000100022 is well known to be incoherent and elastic with the 1392000100023 scattered neutron energy very nearly equal to the 1392000100024 ingoing incident energy. When this comparison 1392000100025 technique is used in its simplest form to evaluate 1392000100026 the scattering from an hydrogenous moderator material, 1392000100027 the major complication is the treatment of the 1392000100028 absorption cross section in vanadium. 1392000100029 HISTORY (20160817C) BP 1392000100030 ENDBIB 28 0 1392000100031 NOCOMMON 0 0 1392000100032 ENDSUBENT 31 0 1392000199999 SUBENT 13920002 20160817 14221392000200001 BIB 3 3 1392000200002 REACTION (6-C-CMP(N,THS)6-C-CMP,,DA) CnH2n (polyethylene). 1392000200003 SAMPLE 0.0ll-in. thick specimen of CnH2n (polyethylene). 1392000200004 STATUS (CURVE) Fig. 29, page 53. 1392000200005 ENDBIB 3 0 1392000200006 COMMON 1 3 1392000200007 EN 1392000200008 EV 1392000200009 0.235 1392000200010 ENDCOMMON 3 0 1392000200011 DATA 2 3 1392000200012 COS DATA 1392000200013 NO-DIM B/SR 1392000200014 -0.007 3.234 1392000200015 0.495 5.739 1392000200016 0.863 10.534 1392000200017 ENDDATA 5 0 1392000200018 ENDSUBENT 17 0 1392000299999 SUBENT 13920003 20160817 14221392000300001 BIB 3 4 1392000300002 REACTION (6-C-CMP(N,THS)6-C-CMP,,DA/DE,,MSC) CnH2n 1392000300003 (polyethylene). Cross section per atom 1392000300004 SAMPLE 0.0ll-in. thick specimen of CnH2n (polyethylene). 1392000300005 STATUS (CURVE) Fig. 32, page 57. 1392000300006 ENDBIB 4 0 1392000300007 COMMON 2 3 1392000300008 EN ANG 1392000300009 EV ADEG 1392000300010 0.235 90.0 1392000300011 ENDCOMMON 3 0 1392000300012 DATA 2 33 1392000300013 E DATA 1392000300014 EV B/SR/EV 1392000300015 0.032 1.574 1392000300016 0.034 2.160 1392000300017 0.035 3.112 1392000300018 0.036 3.991 1392000300019 0.038 4.443 1392000300020 0.039 4.699 1392000300021 0.040 5.737 1392000300022 0.042 4.028 1392000300023 0.046 4.296 1392000300024 0.049 4.223 1392000300025 0.056 6.860 1392000300026 0.059 7.202 1392000300027 0.063 7.556 1392000300028 0.066 7.898 1392000300029 0.071 7.532 1392000300030 0.075 7.251 1392000300031 0.079 6.311 1392000300032 0.084 5.322 1392000300033 0.091 5.346 1392000300034 0.097 5.896 1392000300035 0.104 6.299 1392000300036 0.111 6.848 1392000300037 0.120 7.129 1392000300038 0.130 6.897 1392000300039 0.141 6.396 1392000300040 0.154 5.908 1392000300041 0.168 6.946 1392000300042 0.185 8.081 1392000300043 0.204 7.751 1392000300044 0.226 6.592 1392000300045 0.251 3.454 1392000300046 0.286 0.915 1392000300047 0.317 0.084 1392000300048 ENDDATA 35 0 1392000300049 ENDSUBENT 48 0 1392000399999 SUBENT 13920004 20160817 14221392000400001 BIB 3 4 1392000400002 REACTION (40-ZR-HYD(N,THS)40-ZR-HYD,,DA/DE,,MSC) 1392000400003 Cross section per atom 1392000400004 SAMPLE ZrH, T=300 K. 1392000400005 STATUS (CURVE) Fig. 42, page 73. 1392000400006 ENDBIB 4 0 1392000400007 COMMON 3 3 1392000400008 EN ANG TEMP 1392000400009 EV ADEG K 1392000400010 0.240 90.0 300.0 1392000400011 ENDCOMMON 3 0 1392000400012 DATA 2 24 1392000400013 E DATA 1392000400014 EV B/SR/EV 1392000400015 7.033E-02 3.086E+00 1392000400016 8.074E-02 8.933E+00 1392000400017 9.043E-02 1.332E+01 1392000400018 1.001E-01 1.563E+01 1392000400019 1.106E-01 1.201E+01 1392000400020 1.208E-01 6.478E+00 1392000400021 1.317E-01 2.779E+00 1392000400022 1.408E-01 2.287E+00 1392000400023 1.526E-01 3.825E+00 1392000400024 1.616E-01 5.390E+00 1392000400025 1.710E-01 7.422E+00 1392000400026 1.811E-01 1.022E+01 1392000400027 1.897E-01 1.633E+01 1392000400028 2.031E-01 2.099E+01 1392000400029 2.125E-01 2.579E+01 1392000400030 2.223E-01 2.891E+01 1392000400031 2.351E-01 2.668E+01 1392000400032 2.430E-01 2.098E+01 1392000400033 2.538E-01 1.374E+01 1392000400034 2.651E-01 9.863E+00 1392000400035 2.739E-01 7.326E+00 1392000400036 2.800E-01 6.314E+00 1392000400037 2.924E-01 3.774E+00 1392000400038 2.953E-01 2.500E+00 1392000400039 ENDDATA 26 0 1392000400040 ENDSUBENT 39 0 1392000499999 SUBENT 13920005 20160817 14221392000500001 BIB 3 3 1392000500002 REACTION (40-ZR-HYD(N,THS)40-ZR-HYD,,DA) 1392000500003 SAMPLE ZrH0.5, concentration of hydrogen H/Zr=0.5; T=300 K. 1392000500004 STATUS (CURVE) Fig. 43, page 74. 1392000500005 ENDBIB 3 0 1392000500006 COMMON 2 3 1392000500007 EN TEMP 1392000500008 EV K 1392000500009 0.239 300.0 1392000500010 ENDCOMMON 3 0 1392000500011 DATA 2 4 1392000500012 COS DATA 1392000500013 NO-DIM B/SR 1392000500014 -0.501 0.947 1392000500015 0.006 1.004 1392000500016 0.499 1.523 1392000500017 0.869 2.025 1392000500018 ENDDATA 6 0 1392000500019 ENDSUBENT 18 0 1392000599999 SUBENT 13920006 20160817 14221392000600001 BIB 4 6 1392000600002 REACTION (40-ZR-HYD(N,THS)40-ZR-HYD,,SIG) 1392000600003 SAMPLE ZrH0.5, concentration of hydrogen H/Zr=0.5; T=300 K. 1392000600004 ANALYSIS (4PI1A) If one integrates this Curve over all 1392000600005 directions, one arrives at the total scattering cross 1392000600006 section. 1392000600007 STATUS (TABLE) Table 2, page 75. 1392000600008 ENDBIB 6 0 1392000600009 COMMON 1 3 1392000600010 TEMP 1392000600011 K 1392000600012 300.0 1392000600013 ENDCOMMON 3 0 1392000600014 DATA 2 2 1392000600015 EN DATA 1392000600016 EV B 1392000600017 0.239 16.1 1392000600018 0.399 15.1 1392000600019 ENDDATA 4 0 1392000600020 ENDSUBENT 19 0 1392000699999 SUBENT 13920007 20160817 14221392000700001 BIB 5 6 1392000700002 REACTION (40-ZR-HYD(N,INL)40-ZR-HYD,PAR,DA,,MSC) 1392000700003 Cross section per atom 1392000700004 SAMPLE ZrH0.5, concentration of hydrogen H/Zr=0.5; T=300 K. 1392000700005 EN-SEC (E-LVL,1-H-1) Level of H in ZrH 1392000700006 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. 1392000700007 STATUS (CURVE) Fig. 46, page 80. 1392000700008 ENDBIB 6 0 1392000700009 COMMON 3 3 1392000700010 EN E-LVL TEMP 1392000700011 EV EV K 1392000700012 0.239 0.14 300.0 1392000700013 ENDCOMMON 3 0 1392000700014 DATA 3 4 1392000700015 ANG DATA DATA-ERR 1392000700016 ADEG B/SR B/SR 1392000700017 30.060 1.330 0.127 1392000700018 60.209 1.829 0.183 1392000700019 89.997 1.287 0.132 1392000700020 119.907 1.035 0.112 1392000700021 ENDDATA 6 0 1392000700022 ENDSUBENT 21 0 1392000799999 SUBENT 13920008 20160817 14221392000800001 BIB 4 5 1392000800002 REACTION (40-ZR-HYD(N,INL)40-ZR-HYD,PAR,DA,,MSC) 1392000800003 Cross section per atom 1392000800004 SAMPLE ZrH2.0, concentration of hydrogen H/Zr=2.0; T=300 K. 1392000800005 EN-SEC (E-LVL,1-H-1) Level of H in ZrH 1392000800006 STATUS (CURVE) Fig. 46, page 80. 1392000800007 ENDBIB 5 0 1392000800008 COMMON 3 3 1392000800009 EN E-LVL TEMP 1392000800010 EV EV K 1392000800011 0.239 0.14 300.0 1392000800012 ENDCOMMON 3 0 1392000800013 DATA 3 2 1392000800014 ANG DATA DATA-ERR 1392000800015 ADEG B/SR B/SR 1392000800016 29.936 1.163 0.117 1392000800017 90.012 0.744 0.076 1392000800018 ENDDATA 4 0 1392000800019 ENDSUBENT 18 0 1392000899999 SUBENT 13920009 20160817 14221392000900001 BIB 5 6 1392000900002 REACTION (40-ZR-HYD(N,INL)40-ZR-HYD,PAR,DA,,MSC) 1392000900003 Cross section per atom 1392000900004 SAMPLE ZrH, T=300 K. 1392000900005 EN-SEC (E-LVL,1-H-1) Level of H in ZrH 1392000900006 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. 1392000900007 STATUS (CURVE) Fig. 47, page 81. 1392000900008 ENDBIB 6 0 1392000900009 COMMON 3 3 1392000900010 EN E-LVL TEMP 1392000900011 EV EV K 1392000900012 0.380 0.14 300.0 1392000900013 ENDCOMMON 3 0 1392000900014 DATA 3 3 1392000900015 ANG DATA DATA-ERR 1392000900016 ADEG B/SR B/SR 1392000900017 29.888 1.114 0.127 1392000900018 59.939 0.760 0.094 1392000900019 89.744 0.190 0.052 1392000900020 ENDDATA 5 0 1392000900021 ENDSUBENT 20 0 1392000999999 SUBENT 13920010 20160817 14221392001000001 BIB 5 6 1392001000002 REACTION (40-ZR-HYD(N,INL)40-ZR-HYD,PAR,DA,,MSC) 1392001000003 Cross section per atom 1392001000004 SAMPLE ZrH, T=300 K. 1392001000005 EN-SEC (E-LVL,1-H-1) Level of H in ZrH 1392001000006 ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. 1392001000007 STATUS (CURVE) Fig. 47, page 81. 1392001000008 ENDBIB 6 0 1392001000009 COMMON 3 3 1392001000010 EN E-LVL TEMP 1392001000011 EV EV K 1392001000012 0.380 0.28 300.0 1392001000013 ENDCOMMON 3 0 1392001000014 DATA 3 3 1392001000015 ANG DATA DATA-ERR 1392001000016 ADEG B/SR B/SR 1392001000017 29.871 0.437 0.042 1392001000018 59.694 0.591 0.071 1392001000019 89.988 0.326 0.042 1392001000020 ENDDATA 5 0 1392001000021 ENDSUBENT 20 0 1392001099999 ENDENTRY 10 0 1392099999999