ENTRY 14578 20191224 14631457800000001 SUBENT 14578001 20191224 14631457800100001 BIB 8 17 1457800100002 TITLE Properties of the alpha particles emitted in the 1457800100003 spontaneous fission of Cf252 1457800100004 AUTHOR (Z.Fraenkel,S.G.Thompson) 1457800100005 INSTITUTE (1USALRL) 1457800100006 REFERENCE (J,PRL,13,438,1964) 1457800100007 DETECTOR (FISCH) A fission chamber containing two fixed 1457800100008 semiconductor detectors (for the two fission 1457800100009 fragments), one movable semiconductor detector (for 1457800100010 the alpha particle). 1457800100011 A 16-mg/cm2 Au foil was placed in front of the alpha 1457800100012 particle detector in order to prevent the 6.1-MeV 1457800100013 alpha particles from the alpha decay of Cf252 and 1457800100014 fission fragments from reaching the detector. 1457800100015 METHOD (COINC) 1457800100016 SAMPLE 1.5e+7-fission/min Cf252 source on a 100 mu-g/cm2 Ni 1457800100017 foil backing. 1457800100018 HISTORY (20191224C) OG. 1457800100019 ENDBIB 17 0 1457800100020 NOCOMMON 0 0 1457800100021 ENDSUBENT 20 0 1457800199999 SUBENT 14578002 20200205 14631457800200001 BIB 6 21 1457800200002 REACTION 1(98-CF-252(0,F)2-HE-4,TER,AKE,HF) 1457800200003 2(98-CF-252(0,F)2-HE-4,TER,AKE,LF) 1457800200004 3(98-CF-252(0,F)2-HE-4,TER,AKE,LF+HF) 1457800200005 MISC-COL (MISC1) Standard deviations of the kinetic energy of 1457800200006 the heavy fragment 1457800200007 (MISC2) Standard deviations of the kinetic energy of 1457800200008 the light fragment 1457800200009 (MISC3) Standard deviations of the kinetic energy of 1457800200010 the light and heavy fragments 1457800200011 COMMENT All the values for alpha fission-fission were 1457800200012 obtained for an alpha particle angle of 90 degrees 1457800200013 with respect to the two fission-fragment detectors. 1457800200014 ADD-RES The average total kinetic energy in alpha fission 1457800200015 (including the energy of the alpha particle) was 1457800200016 185.2+-0.1 MeV and the width (standard deviation) of 1457800200017 the distribution was 12.7+-0.1 MeV. 1457800200018 The average kinetic energy ratio of the two fission 1457800200019 fragments is 1.323+-0.002 and the width of the 1457800200020 distribution is 0.142+-0.001. 1457800200021 ERR-ANALYS (ERR-S) Statistical errors 1457800200022 STATUS (TABLE) Tab.I in Phys.Rev.Lett.,13,438,1964 1457800200023 ENDBIB 21 0 1457800200024 NOCOMMON 0 0 1457800200025 DATA 12 1 1457800200026 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31457800200027 MISC1 MISC1-ERR MISC2 MISC2-ERR MISC3 MISC3-ERR 1457800200028 MEV MEV MEV MEV MEV MEV 1457800200029 MEV MEV MEV MEV MEV MEV 1457800200030 74.3 0.1 97.3 0.1 169.0 0.1 1457800200031 7.16 0.06 5.75 0.05 12.57 0.10 1457800200032 ENDDATA 6 0 1457800200033 ENDSUBENT 32 0 1457800299999 SUBENT 14578003 20200205 14631457800300001 BIB 5 14 1457800300002 REACTION 1(98-CF-252(0,F),SEC,AKE,HF) 1457800300003 2(98-CF-252(0,F),SEC,AKE,LF) 1457800300004 3(98-CF-252(0,F),SEC,AKE,LF+HF) 1457800300005 MISC-COL (MISC1) Standard deviations of the kinetic energy of 1457800300006 the heavy fragment 1457800300007 (MISC2) Standard deviations of the kinetic energy of 1457800300008 the light fragment 1457800300009 (MISC3) Standard deviations of the kinetic energy of 1457800300010 the light and heavy fragments 1457800300011 ERR-ANALYS (ERR-S) Statistical errors 1457800300012 ADD-RES The average kinetic energy ratio of the two fission 1457800300013 fragments is 1.330+-0.001 and the width of the 1457800300014 distribution is 0.150+-0.001. 1457800300015 STATUS (TABLE) Tab.I in Phys.Rev.Lett.,13,438,1964 1457800300016 ENDBIB 14 0 1457800300017 NOCOMMON 0 0 1457800300018 DATA 12 1 1457800300019 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 31457800300020 MISC1 MISC1-ERR MISC2 MISC2-ERR MISC3 MISC3-ERR 1457800300021 MEV MEV MEV MEV MEV MEV 1457800300022 MEV MEV MEV MEV MEV MEV 1457800300023 78.8 0.2 104.1 0.1 181.1 0.1 1457800300024 8.89 0.12 6.22 0.09 13.51 0.06 1457800300025 ENDDATA 6 0 1457800300026 ENDSUBENT 25 0 1457800399999 SUBENT 14578004 20200205 14631457800400001 BIB 4 10 1457800400002 REACTION (98-CF-252(0,F)2-HE-4,TER,FY/DA,,REL) 1457800400003 MISC-COL (MISC) The average kinetic energy ratio, R, of the 1457800400004 two fission fragments. This ratio corresponds to the 1457800400005 mass ratio of the fragments at scission (primary mass 1457800400006 ratio) except for corrections due to neutron emission. 1457800400007 ANG is the angle with respect to the direction of the 1457800400008 light fragment. R >= MISC-MIN, R < MISC-MAX. 1457800400009 ERR-ANALYS No information on uncertainties 1457800400010 STATUS (CURVE) Fig.1 in Phys.Rev.Lett.,13,438,1964 digitized 1457800400011 by GSYS2.4.7. 1457800400012 ENDBIB 10 0 1457800400013 NOCOMMON 0 0 1457800400014 DATA 4 58 1457800400015 ANG DATA MISC-MIN MISC-MAX 1457800400016 ADEG ARB-UNITS NO-DIM NO-DIM 1457800400017 60.52 537.02 1.4 1.6 1457800400018 60.64 1007.03 1.0 1.1 1457800400019 60.65 976.57 1.2 1.4 1457800400020 60.69 345.68 1.0 1.2 1457800400021 70.18 67.25 1.8 2.0 1457800400022 70.62 2065.67 1.0 1.2 1457800400023 70.69 1836.19 1.4 1.6 1457800400024 70.74 4254.46 1.2 1.4 1457800400025 70.83 1367.67 1.0 1.1 1457800400026 74.98 92.94 1.8 2.0 1457800400027 75.21 441.01 1.6 1.8 1457800400028 75.53 1372.45 1.0 1.1 1457800400029 75.55 2557.69 1.0 1.2 1457800400030 75.63 2423.79 1.4 1.6 1457800400031 75.84 5482.33 1.2 1.4 1457800400032 80.06 123.41 1.8 2.0 1457800400033 80.22 528.06 1.6 1.8 1457800400034 80.59 1214.37 1.0 1.1 1457800400035 80.63 2648.11 1.0 1.2 1457800400036 80.75 2839.16 1.4 1.6 1457800400037 80.88 6098.51 1.2 1.4 1457800400038 85.15 632.37 1.6 1.8 1457800400039 85.24 151.00 1.8 2.0 1457800400040 85.37 23.46 2.0 10.0 1457800400041 85.54 979.92 1.0 1.1 1457800400042 85.67 2270.20 1.0 1.2 1457800400043 85.73 2939.23 1.4 1.6 1457800400044 85.74 5873.71 1.2 1.4 1457800400045 90.13 170.93 1.8 2.0 1457800400046 90.16 709.84 1.6 1.8 1457800400047 90.18 62.57 2.0 10.0 1457800400048 90.48 563.88 1.0 1.1 1457800400049 90.60 2752.67 1.4 1.6 1457800400050 90.72 4979.69 1.2 1.4 1457800400051 90.77 1634.14 1.0 1.2 1457800400052 95.10 168.81 1.8 2.0 1457800400053 95.14 711.54 1.6 1.8 1457800400054 95.17 93.05 2.0 10.0 1457800400055 95.53 2288.84 1.4 1.6 1457800400056 95.59 960.14 1.0 1.2 1457800400057 95.76 3712.83 1.2 1.4 1457800400058 100.07 145.58 1.8 2.0 1457800400059 100.07 603.94 1.6 1.8 1457800400060 100.15 95.72 2.0 10.0 1457800400061 100.51 448.52 1.0 1.2 1457800400062 100.63 1595.43 1.4 1.6 1457800400063 100.70 2331.37 1.2 1.4 1457800400064 105.11 72.50 2.0 10.0 1457800400065 105.13 102.22 1.8 2.0 1457800400066 105.14 382.22 1.6 1.8 1457800400067 105.38 281.07 1.0 1.2 1457800400068 105.56 1131.60 1.2 1.4 1457800400069 105.62 844.78 1.4 1.6 1457800400070 110.07 14.75 2.0 10.0 1457800400071 110.08 49.27 1.8 2.0 1457800400072 110.19 84.75 1.6 1.8 1457800400073 110.53 103.77 1.4 1.6 1457800400074 110.55 361.83 1.2 1.4 1457800400075 ENDDATA 60 0 1457800400076 ENDSUBENT 75 0 1457800499999 ENDENTRY 4 0 1457899999999