ENTRY 14397 20141120 14051439700000001 SUBENT 14397001 20141120 14051439700100001 BIB 11 42 1439700100002 TITLE Measurement of the 240Am(n,f) cross section using 1439700100003 the surrogate-ratio method 1439700100004 AUTHOR (R.J.Casperson,J.T.Burke,N.D.Scielzo,J.E.Escher, 1439700100005 E.McCleskey,M.McCleskey,A.Saastamoinen,A.Spiridon, 1439700100006 A.Ratkiewicz,A.Blanc,M.Kurokawa,R.G.Pizzone) 1439700100007 INSTITUTE (1USALRL,1USATAM,1USARUT,2FR ILL,2JPNIPC,2ITYLNS) 1439700100008 REFERENCE (J,PR/C,90,034601,2014) 1439700100009 FACILITY (CYCLO,1USATAM) Experiment performed at the K-150 1439700100010 cyclotron facility at Texas A&M University 1439700100011 DETECTOR Measurement performed using STARLiTeR setup, 1439700100012 consisting of Silicon Telescope Array for Reaction 1439700100013 Studies (STARS) and the Livermore-Texas-Richmond array 1439700100014 LiTeR of up to six Compton-suppressed clover gamma- 1439700100015 ray detectors 1439700100016 (TELES,SI,SI)STARS consisted of one 150 mu-m dE,1005 1439700100017 mu-m and 1000 mu-m and Micron S2 type silicon detectors1439700100018 placed downstream of the target for the detection of 1439700100019 outgoing protons, deuterons and tritons between 30deg 1439700100020 and 62deg. Another 149 mu-m Micron S2 type detector 1439700100021 was placed upstream for the detection of coincident 1439700100022 fission fragments at backward angles between 108deg 1439700100023 and 135deg. Each S2 detector had 8 sectors and 24 1439700100024 1-mm-wide rings to provide position sensitivity in 1439700100025 measuring incident charged particles 1439700100026 (HPGE) LiTeR array consists of up to six Compton- 1439700100027 suppressed clover gamma-ray detectors, of which five 1439700100028 were used in the present experiment. 1439700100029 METHOD (EDE) Particles were identified using E-dE method. In 1439700100030 the energy range relevant to the (p,df) and (p,tf) 1439700100031 reactions, all particles were stopped in the E1 1439700100032 detector, the E2 detector was needed for stopping 1439700100033 protons and higher energy deuterons. 1439700100034 MONITOR (92-U-235(N,F),,SIG) 1439700100035 MONIT-REF (,M.Chadwick+,3,ENDF/B-VII,,2011) 1439700100036 ANALYSIS (SURGT) Surrogate method was used to determine the 1439700100037 fission cross section 1439700100038 Surrogate reaction for 240Am(n,f) reaction was chosen 1439700100039 243Am(p,t)241Am, which leads to the same compound 1439700100040 nucleus 241Am. Surrogate for 235U(n,f) was reaction 1439700100041 238U(p,t)236U. Surrogate ratio method was used with 1439700100042 235U(n,f)as reference-monitor reaction. 1439700100043 HISTORY (20141120C) Compiled by S.H. 1439700100044 ENDBIB 42 0 1439700100045 COMMON 1 3 1439700100046 EN-ERR 1439700100047 KEV 1439700100048 70.0 1439700100049 ENDCOMMON 3 0 1439700100050 ENDSUBENT 49 0 1439700199999 SUBENT 14397002 20141120 14051439700200001 BIB 4 17 1439700200002 REACTION (95-AM-240(N,F),,SIG,,,DERIV) 1439700200003 STATUS (CURVE) data taken from fig.12 of the reference. 1439700200004 Waiting for data from author. 1439700200005 SAMPLE Enriched 243Am sample with thickness od 52+-3 mu-g/cm2 1439700200006 electroplated on 100 mu-g/cm2 natural carbon backing. 1439700200007 For reference in surrogate method an enriched 238U 1439700200008 target with thickness of (236+-14) mu-g electroplated 1439700200009 on natural carbon backing with thickness 1439700200010 of 100 mu-g/cm2. 1439700200011 ERR-ANALYS (ERR-SYS) Total systematic uncertainty 1439700200012 (ERR-1) Syst. uncertainty in target thickness ratio 1439700200013 (ERR-2) Syst. uncertainty in target thickness variation1439700200014 (ERR-3) Syst. uncertainty in ratio of integrated beam 1439700200015 current 1439700200016 (ERR-4) Syst. uncertainty in live time fraction 1439700200017 (ERR-5) Syst. uncertainty in 235U cross section 1439700200018 (ERR-T) Total uncertainty 1439700200019 ENDBIB 17 0 1439700200020 COMMON 6 3 1439700200021 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-SYS 1439700200022 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1439700200023 3.0 4.0 1.0 1.0 1.0 5.0 1439700200024 ENDCOMMON 3 0 1439700200025 DATA 3 141 1439700200026 EN DATA ERR-T 1439700200027 MEV B B 1439700200028 0.05 2.181E+00 2.702E-01 1439700200029 0.15 2.068E+00 2.539E-01 1439700200030 0.25 1.826E+00 2.262E-01 1439700200031 0.35 1.709E+00 2.116E-01 1439700200032 0.45 1.702E+00 2.100E-01 1439700200033 0.55 1.579E+00 1.904E-01 1439700200034 0.65 1.696E+00 2.083E-01 1439700200035 0.75 1.701E+00 2.067E-01 1439700200036 0.85 1.704E+00 2.083E-01 1439700200037 0.95 1.782E+00 2.149E-01 1439700200038 1.05 1.754E+00 2.165E-01 1439700200039 1.15 1.611E+00 1.986E-01 1439700200040 1.25 1.640E+00 2.035E-01 1439700200041 1.35 1.720E+00 2.132E-01 1439700200042 1.45 1.671E+00 2.083E-01 1439700200043 1.55 1.702E+00 2.083E-01 1439700200044 1.65 1.600E+00 1.953E-01 1439700200045 1.75 1.911E+00 2.344E-01 1439700200046 1.85 1.753E+00 2.132E-01 1439700200047 1.95 1.813E+00 2.181E-01 1439700200048 2.05 1.876E+00 1.465E-01 1439700200049 2.15 1.956E+00 1.595E-01 1439700200050 2.25 1.836E+00 1.400E-01 1439700200051 2.35 1.808E+00 1.367E-01 1439700200052 2.45 1.850E+00 1.449E-01 1439700200053 2.55 1.762E+00 1.335E-01 1439700200054 2.65 1.862E+00 1.432E-01 1439700200055 2.75 1.868E+00 1.449E-01 1439700200056 2.85 1.839E+00 1.416E-01 1439700200057 2.95 1.692E+00 1.253E-01 1439700200058 3.05 1.780E+00 1.351E-01 1439700200059 3.15 1.642E+00 1.253E-01 1439700200060 3.25 1.671E+00 1.270E-01 1439700200061 3.35 1.741E+00 1.335E-01 1439700200062 3.45 1.771E+00 1.416E-01 1439700200063 3.55 1.699E+00 1.286E-01 1439700200064 3.65 1.652E+00 1.302E-01 1439700200065 3.75 1.735E+00 1.351E-01 1439700200066 3.85 1.655E+00 1.221E-01 1439700200067 3.95 1.657E+00 1.237E-01 1439700200068 4.05 1.699E+00 1.302E-01 1439700200069 4.15 1.645E+00 1.286E-01 1439700200070 4.25 1.676E+00 1.286E-01 1439700200071 4.35 1.782E+00 1.351E-01 1439700200072 4.45 1.865E+00 1.400E-01 1439700200073 4.55 1.588E+00 1.221E-01 1439700200074 4.65 1.647E+00 1.237E-01 1439700200075 4.75 1.526E+00 1.172E-01 1439700200076 4.85 1.709E+00 1.302E-01 1439700200077 4.95 1.706E+00 1.318E-01 1439700200078 5.05 1.759E+00 1.335E-01 1439700200079 5.15 1.618E+00 1.237E-01 1439700200080 5.25 1.663E+00 1.318E-01 1439700200081 5.35 1.531E+00 1.204E-01 1439700200082 5.45 1.613E+00 1.221E-01 1439700200083 5.55 1.692E+00 1.351E-01 1439700200084 5.65 1.526E+00 1.156E-01 1439700200085 5.75 1.662E+00 1.302E-01 1439700200086 5.85 1.595E+00 1.188E-01 1439700200087 5.95 1.466E+00 1.091E-01 1439700200088 6.05 1.593E+00 1.204E-01 1439700200089 6.15 1.622E+00 1.221E-01 1439700200090 6.25 1.585E+00 1.204E-01 1439700200091 6.35 1.579E+00 1.172E-01 1439700200092 6.45 1.572E+00 1.204E-01 1439700200093 6.55 1.756E+00 1.302E-01 1439700200094 6.65 1.652E+00 1.253E-01 1439700200095 6.75 1.627E+00 1.221E-01 1439700200096 6.85 1.595E+00 1.172E-01 1439700200097 6.95 1.723E+00 1.302E-01 1439700200098 7.05 1.761E+00 1.318E-01 1439700200099 7.15 1.694E+00 1.253E-01 1439700200100 7.25 1.668E+00 1.204E-01 1439700200101 7.35 1.849E+00 1.384E-01 1439700200102 7.45 1.841E+00 1.318E-01 1439700200103 7.55 1.917E+00 1.432E-01 1439700200104 7.66 1.880E+00 1.416E-01 1439700200105 7.75 1.915E+00 1.416E-01 1439700200106 7.85 1.902E+00 1.400E-01 1439700200107 7.95 1.924E+00 1.432E-01 1439700200108 8.05 1.961E+00 1.400E-01 1439700200109 8.15 2.034E+00 1.465E-01 1439700200110 8.25 1.959E+00 1.400E-01 1439700200111 8.35 2.112E+00 1.530E-01 1439700200112 8.45 1.932E+00 1.481E-01 1439700200113 8.55 1.942E+00 1.367E-01 1439700200114 8.65 1.878E+00 1.367E-01 1439700200115 8.75 1.966E+00 1.465E-01 1439700200116 8.85 1.961E+00 1.465E-01 1439700200117 8.95 1.994E+00 1.481E-01 1439700200118 9.05 1.943E+00 1.400E-01 1439700200119 9.15 2.018E+00 1.465E-01 1439700200120 9.25 1.945E+00 1.432E-01 1439700200121 9.35 1.797E+00 1.318E-01 1439700200122 9.45 1.899E+00 1.400E-01 1439700200123 9.55 1.919E+00 1.432E-01 1439700200124 9.65 1.938E+00 1.416E-01 1439700200125 9.75 1.875E+00 1.351E-01 1439700200126 9.86 1.995E+00 1.449E-01 1439700200127 9.95 1.945E+00 1.432E-01 1439700200128 10.05 2.003E+00 1.465E-01 1439700200129 10.15 1.987E+00 1.497E-01 1439700200130 10.25 2.026E+00 1.497E-01 1439700200131 10.35 2.130E+00 1.595E-01 1439700200132 10.45 2.041E+00 1.481E-01 1439700200133 10.55 2.039E+00 1.530E-01 1439700200134 10.65 1.990E+00 1.497E-01 1439700200135 10.75 1.989E+00 1.497E-01 1439700200136 10.85 1.867E+00 1.400E-01 1439700200137 10.95 1.785E+00 1.335E-01 1439700200138 11.05 2.016E+00 1.563E-01 1439700200139 11.15 1.761E+00 1.302E-01 1439700200140 11.25 1.959E+00 1.497E-01 1439700200141 11.35 1.981E+00 1.497E-01 1439700200142 11.45 1.860E+00 1.384E-01 1439700200143 11.55 1.867E+00 1.384E-01 1439700200144 11.65 1.738E+00 1.286E-01 1439700200145 11.75 1.844E+00 1.416E-01 1439700200146 11.85 1.896E+00 1.432E-01 1439700200147 11.95 1.961E+00 1.465E-01 1439700200148 12.05 1.802E+00 1.351E-01 1439700200149 12.15 1.834E+00 1.384E-01 1439700200150 12.25 1.756E+00 1.302E-01 1439700200151 12.35 1.889E+00 1.449E-01 1439700200152 12.45 1.968E+00 1.481E-01 1439700200153 12.55 1.922E+00 1.481E-01 1439700200154 12.65 1.971E+00 1.449E-01 1439700200155 12.75 1.876E+00 1.465E-01 1439700200156 12.85 1.800E+00 1.318E-01 1439700200157 12.95 1.819E+00 1.335E-01 1439700200158 13.05 1.803E+00 1.351E-01 1439700200159 13.15 1.772E+00 1.335E-01 1439700200160 13.25 1.828E+00 1.400E-01 1439700200161 13.35 1.854E+00 1.465E-01 1439700200162 13.45 1.836E+00 1.400E-01 1439700200163 13.55 1.684E+00 1.302E-01 1439700200164 13.65 1.753E+00 1.351E-01 1439700200165 13.75 1.888E+00 1.449E-01 1439700200166 13.85 1.859E+00 1.432E-01 1439700200167 13.95 1.849E+00 1.449E-01 1439700200168 14.05 1.741E+00 1.351E-01 1439700200169 ENDDATA 143 0 1439700200170 ENDSUBENT 169 0 1439700299999 ENDENTRY 2 0 1439799999999