ENTRY 14652 20200415 14701465200000001 SUBENT 14652001 20200415 14701465200100001 BIB 7 18 1465200100002 TITLE Alpha-Particle-Induced Fission of Th230, Th232, and 1465200100003 U233 1465200100004 AUTHOR (H.C.Britt,S.L.Whetstone Jr) 1465200100005 REFERENCE (J,PR,133,B603,1964) 1465200100006 #doi:10.1103/PhysRev.133.B603 1465200100007 REL-REF (O,C2522001,H.C.Britt+,J,PR,129,2239,1963) Alpha 1465200100008 induced fission data. 1465200100009 (R,14101001,S.L.Whetstone Jr,J,PR,131,1232,1963) 252Cf 1465200100010 data. 1465200100011 INSTITUTE (1USALAS) 1465200100012 DETECTOR (SIBAR) The two semiconductor detectors were mounted 1465200100013 in a back-to-back arrangement at an angle of 90 1465200100014 degrees relative to the beam direction. The energy 1465200100015 calibration of the semiconductor detectors was 1465200100016 obtained by observing fragments from the spontaneous 1465200100017 fission of Cf252 and comparing the results to the 1465200100018 double-velocity measurements of Whetstone. 1465200100019 HISTORY (20200415C) BP 1465200100020 ENDBIB 18 0 1465200100021 NOCOMMON 0 0 1465200100022 ENDSUBENT 21 0 1465200199999 SUBENT 14652002 20200415 14701465200200001 BIB 3 4 1465200200002 REACTION (98-CF-252(0,F)MASS,SEC,FY) 1465200200003 METHOD Double-energy measurement: Mh/Ml=El/Ef. 1465200200004 STATUS (CURVE) Fig. 7, page B607. 1465200200005 (COREL,14652003) 2v measurement 1465200200006 ENDBIB 4 0 1465200200007 NOCOMMON 0 0 1465200200008 DATA 2 41 1465200200009 MASS DATA 1465200200010 NO-DIM PC/FIS 1465200200011 86.019 0.101 1465200200012 87.167 0.211 1465200200013 88.113 0.255 1465200200014 89.195 0.278 1465200200015 90.073 0.344 1465200200016 91.153 0.465 1465200200017 92.099 0.531 1465200200018 92.976 0.641 1465200200019 94.054 0.914 1465200200020 95.068 0.959 1465200200021 95.944 1.101 1465200200022 97.157 1.364 1465200200023 98.100 1.605 1465200200024 99.107 2.011 1465200200025 100.049 2.295 1465200200026 101.058 2.624 1465200200027 102.133 3.029 1465200200028 103.070 3.555 1465200200029 104.147 3.883 1465200200030 105.077 4.813 1465200200031 106.018 5.153 1465200200032 107.030 5.296 1465200200033 108.041 5.493 1465200200034 109.193 5.373 1465200200035 110.140 5.407 1465200200036 111.094 5.035 1465200200037 112.041 5.036 1465200200038 112.994 4.708 1465200200039 114.020 4.052 1465200200040 115.171 3.998 1465200200041 116.128 3.462 1465200200042 116.945 3.189 1465200200043 118.033 2.862 1465200200044 118.988 2.436 1465200200045 119.878 1.867 1465200200046 121.033 1.595 1465200200047 122.054 1.245 1465200200048 123.007 0.917 1465200200049 124.026 0.655 1465200200050 125.043 0.525 1465200200051 126.059 0.470 1465200200052 ENDDATA 43 0 1465200200053 ENDSUBENT 52 0 1465200299999 SUBENT 14652003 20200415 14701465200300001 BIB 3 4 1465200300002 REACTION (98-CF-252(0,F)MASS,SEC,FY) 1465200300003 METHOD Double-velocity measurement. 1465200300004 STATUS (CURVE) Fig. 7, page B607. 1465200300005 (COREL,14652002) 2E measurement 1465200300006 ENDBIB 4 0 1465200300007 NOCOMMON 0 0 1465200300008 DATA 2 42 1465200300009 MASS DATA 1465200300010 NO-DIM PC/FIS 1465200300011 84.599 0.068 1465200300012 85.478 0.068 1465200300013 86.492 0.112 1465200300014 87.574 0.146 1465200300015 88.587 0.212 1465200300016 89.534 0.223 1465200300017 90.546 0.377 1465200300018 91.559 0.454 1465200300019 92.507 0.433 1465200300020 93.518 0.608 1465200300021 94.462 0.783 1465200300022 95.472 1.035 1465200300023 96.485 1.134 1465200300024 97.493 1.518 1465200300025 98.502 1.824 1465200300026 99.511 2.109 1465200300027 100.450 2.558 1465200300028 101.456 3.073 1465200300029 102.527 3.686 1465200300030 103.401 3.992 1465200300031 104.400 4.857 1465200300032 105.537 5.568 1465200300033 106.542 6.105 1465200300034 107.486 6.280 1465200300035 108.572 6.040 1465200300036 109.524 5.778 1465200300037 110.614 5.352 1465200300038 111.498 5.112 1465200300039 112.582 5.003 1465200300040 113.607 4.468 1465200300041 114.495 3.987 1465200300042 115.383 3.495 1465200300043 116.538 3.233 1465200300044 117.491 2.883 1465200300045 118.381 2.348 1465200300046 119.542 1.725 1465200300047 120.361 1.299 1465200300048 121.520 0.840 1465200300049 122.403 0.633 1465200300050 123.357 0.239 1465200300051 124.442 0.109 1465200300052 125.457 0.076 1465200300053 ENDDATA 44 0 1465200300054 ENDSUBENT 53 0 1465200399999 SUBENT 14652004 20200415 14701465200400001 BIB 3 10 1465200400002 REACTION (98-CF-252(0,F)MASS,PR,NU) 1465200400003 ANALYSIS From a comparison of the mass distributions obtained 1465200400004 from double-energy measurements with the mass 1465200400005 distributions obtained from double-velocity 1465200400006 time-of-flight measurements, it is possible to deduce 1465200400007 the average number of prompt neutrons emitted as a 1465200400008 function of the fragment mass. 1465200400009 STATUS (DEP,14652002) 1465200400010 (DEP,14652003) 1465200400011 (CURVE) Fig. 8, page B608. 1465200400012 ENDBIB 10 0 1465200400013 NOCOMMON 0 0 1465200400014 DATA 2 34 1465200400015 MASS DATA 1465200400016 NO-DIM PRT/FIS 1465200400017 87.805 0.100 1465200400018 89.992 0.401 1465200400019 91.924 0.544 1465200400020 93.988 0.576 1465200400021 96.049 0.735 1465200400022 97.979 1.004 1465200400023 100.170 1.115 1465200400024 101.974 1.226 1465200400025 104.037 1.306 1465200400026 106.097 1.543 1465200400027 108.155 1.859 1465200400028 109.953 2.223 1465200400029 112.005 2.855 1465200400030 113.938 2.951 1465200400031 116.128 3.141 1465200400032 117.927 3.457 1465200400033 120.244 3.726 1465200400034 122.050 3.774 1465200400035 131.662 0.762 1465200400036 133.852 0.904 1465200400037 136.033 1.521 1465200400038 137.710 1.553 1465200400039 139.781 1.222 1465200400040 141.839 1.554 1465200400041 143.903 1.571 1465200400042 145.837 1.619 1465200400043 148.025 1.872 1465200400044 149.957 2.046 1465200400045 152.020 2.126 1465200400046 156.006 2.790 1465200400047 157.811 2.854 1465200400048 159.870 3.139 1465200400049 161.804 3.203 1465200400050 164.117 3.630 1465200400051 ENDDATA 36 0 1465200400052 ENDSUBENT 51 0 1465200499999 ENDENTRY 4 0 1465299999999