ENTRY L0166 20120202 L018L016600000001 SUBENT L0166001 20120202 L018L016600100001 BIB 10 47 L016600100002 TITLE Measurement of prompt neutron polarization L016600100003 asymmetries in photofission of 235,238U, 239Pu, and L016600100004 232Th L016600100005 AUTHOR (J.M.Mueller,M.W.Ahmed,B.Davis,J.M.Hall,S.S.Henshaw, L016600100006 M.S.Johnson,H.J.Karwowski,D.Markoff,L.S.Myers, L016600100007 B.A.Perdue,S.Stave,J.R.Tompkins,M.J.Tuffley, L016600100008 H.R.Weller) L016600100009 INSTITUTE (1USATNL,1USADKE,1USALRL,1USASJS,1USANCA) L016600100010 (1USAUSA) North Carolina Central University, Durham, L016600100011 North Carolina L016600100012 REFERENCE (J,PR/C,85,014605,2012) L016600100013 FACILITY (ESTRG,1USADKE) Experiment performed at the Duke L016600100014 University electron storage ring using High-Intensity L016600100015 Gamma-ray Source (HIgS). L016600100016 DETECTOR (SCIN) Array of 18 liquid scintillation detectors L016600100017 filled with BC-501A scintillator was used to detect L016600100018 neutrons generated from photofission. Diameter of L016600100019 each detector was 12.7 cm and thickness was 5.1 cm. L016600100020 Twelve detectors were placed at theta = 55deg, 90deg L016600100021 and 125deg and at phi = 0deg, 90deg, 180deg and L016600100022 270deg. Six detectors were placed at theta = 72deg, L016600100023 107deg and 142deg and at phi = 0deg and 90deg.The L016600100024 target was positioned at the center of the array, and L016600100025 the flight path from the target to each detector was L016600100026 approximately 57 cm. L016600100027 METHOD (TOF,PSD) Time of flight was used to determine L016600100028 neutron energy. Pulse shape discrimination was used L016600100029 to discriminate against gamma rays. L016600100030 INC-SOURCE (LCS) Photons were produced via Compton L016600100031 backscattering of free-electron laser (FEL) photons L016600100032 from relativistic electrons in one of the two L016600100033 straight sections of electron storage ring. HIgS L016600100034 facility is a nearly-monoenergetic Compton gamma-ray L016600100035 source with a wide energy range and switchable L016600100036 linear and circular polarizations.For this experiment, L016600100037 the FEL wavelength was 540 nm and L016600100038 the electron beam energies were selected to produce L016600100039 gamma-ray beams between 5.6 and 7.3 MeV, with an L016600100040 energy spread (FWHM) of 3%. The gamma-ray beams were L016600100041 produced having either circular or linear L016600100042 polarizations. Because of the duty factor of the L016600100043 electron storage ring, the gamma-ray beam is pulsed L016600100044 with a period of 179 ns. The temporal structure of the L016600100045 gamma-ray beam made possible the use of a L016600100046 time-of-flight method to determine neutron energies. L016600100047 ERR-ANALYS (DATA-ERR) No information given L016600100048 HISTORY (20120202C) Compiled by S.H. L016600100049 ENDBIB 47 0 L016600100050 COMMON 2 3 L016600100051 ANG POL-BM L016600100052 ADEG NO-DIM L016600100053 90.0 1.0 L016600100054 ENDCOMMON 3 0 L016600100055 ENDSUBENT 54 0 L016600199999 SUBENT L0166002 20120202 L018L016600200001 BIB 3 5 L016600200002 REACTION (92-U-235(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600200003 STATUS (TABLE) Data presented in fig. 5 of the reference L016600200004 sent by author (J.M.M.) L016600200005 SAMPLE (92-U-235,ENR=0.937) Mass of the sample was L016600200006 4.620g and main impurity was 6.3% of 238U. L016600200007 ENDBIB 5 0 L016600200008 COMMON 1 3 L016600200009 E-MIN L016600200010 MEV L016600200011 1.5 L016600200012 ENDCOMMON 3 0 L016600200013 DATA 4 7 L016600200014 EN EN-ERR DATA DATA-ERR L016600200015 MEV MEV NO-DIM NO-DIM L016600200016 5.80 0.07 0.0141 0.0152 L016600200017 6.00 0.08 0.0423 0.0122 L016600200018 6.20 0.08 0.0112 0.0154 L016600200019 6.40 0.08 0.0108 0.0100 L016600200020 6.60 0.08 0.0130 0.0142 L016600200021 6.80 0.09 0.0117 0.0143 L016600200022 7.00 0.09 0.0057 0.0126 L016600200023 ENDDATA 9 0 L016600200024 ENDSUBENT 23 0 L016600299999 SUBENT L0166003 20120202 L018L016600300001 BIB 3 5 L016600300002 REACTION (92-U-238(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600300003 STATUS (TABLE) Data presented in fig. 5 of the reference L016600300004 sent by author (J.M.M.) L016600300005 SAMPLE (92-U-235,ENR=0.991) Mass of the sample was L016600300006 6.884g. L016600300007 ENDBIB 5 0 L016600300008 COMMON 1 3 L016600300009 E-MIN L016600300010 MEV L016600300011 1.5 L016600300012 ENDCOMMON 3 0 L016600300013 DATA 4 7 L016600300014 EN EN-ERR DATA DATA-ERR L016600300015 MEV MEV NO-DIM NO-DIM L016600300016 5.80 0.07 0.4203 0.0131 L016600300017 5.90 0.08 0.4354 0.0136 L016600300018 6.00 0.08 0.4143 0.0118 L016600300019 6.10 0.08 0.4090 0.0121 L016600300020 6.20 0.08 0.3837 0.0123 L016600300021 6.50 0.08 0.2101 0.0144 L016600300022 7.00 0.09 0.1600 0.0144 L016600300023 ENDDATA 9 0 L016600300024 ENDSUBENT 23 0 L016600399999 SUBENT L0166004 20120202 L018L016600400001 BIB 3 5 L016600400002 REACTION (94-PU-239(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600400003 STATUS (TABLE) Data presented in fig. 5 of the reference L016600400004 sent by author (J.M.M.) L016600400005 SAMPLE (94-PU-239,ENR=0.940) Mass of the sample was L016600400006 3.808g and main impurity was 5.8% of 240Pu. L016600400007 ENDBIB 5 0 L016600400008 COMMON 1 3 L016600400009 E-MIN L016600400010 MEV L016600400011 1.5 L016600400012 ENDCOMMON 3 0 L016600400013 DATA 4 7 L016600400014 EN EN-ERR DATA DATA-ERR L016600400015 MEV MEV NO-DIM NO-DIM L016600400016 5.60 0.07 -0.0859 0.0162 L016600400017 5.70 0.07 -0.0641 0.0150 L016600400018 5.80 0.07 -0.0450 0.0167 L016600400019 6.00 0.08 0.0097 0.0146 L016600400020 6.20 0.08 0.0136 0.0144 L016600400021 6.50 0.08 0.0239 0.0129 L016600400022 7.00 0.09 0.0114 0.0073 L016600400023 ENDDATA 9 0 L016600400024 ENDSUBENT 23 0 L016600499999 SUBENT L0166005 20120202 L018L016600500001 BIB 3 5 L016600500002 REACTION (90-TH-232(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600500003 STATUS (TABLE) Data presented in fig. 5 of the reference L016600500004 sent by author (J.M.M.) L016600500005 SAMPLE (90-TH-232,ENR=0.999) Mass of the sample was L016600500006 17.36g. L016600500007 ENDBIB 5 0 L016600500008 COMMON 1 3 L016600500009 E-MIN L016600500010 MEV L016600500011 1.5 L016600500012 ENDCOMMON 3 0 L016600500013 DATA 4 6 L016600500014 EN EN-ERR DATA DATA-ERR L016600500015 MEV MEV NO-DIM NO-DIM L016600500016 6.00 0.08 0.4499 0.0122 L016600500017 6.20 0.08 0.4746 0.0110 L016600500018 6.50 0.08 0.4336 0.0111 L016600500019 6.70 0.09 0.3871 0.0124 L016600500020 7.00 0.09 0.3482 0.0112 L016600500021 7.30 0.09 0.2209 0.0262 L016600500022 ENDDATA 8 0 L016600500023 ENDSUBENT 22 0 L016600599999 SUBENT L0166006 20120202 L018L016600600001 BIB 3 5 L016600600002 REACTION (92-U-235(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600600003 STATUS (TABLE) Data presented in fig. 6 of the reference L016600600004 sent by author (J.M.M.) L016600600005 SAMPLE (92-U-235,ENR=0.937) Mass of the sample was L016600600006 4.620g and main impurity was 6.3% of 238U. L016600600007 ENDBIB 5 0 L016600600008 COMMON 2 3 L016600600009 EN-MIN EN-MAX L016600600010 MEV MEV L016600600011 5.8 6.2 L016600600012 ENDCOMMON 3 0 L016600600013 DATA 4 5 L016600600014 E-MIN E-MAX DATA DATA-ERR L016600600015 MEV MEV NO-DIM NO-DIM L016600600016 1.5 2.5 0.0344 0.0163 L016600600017 2.5 3.5 0.0381 0.0196 L016600600018 3.5 4.5 0.0604 0.0274 L016600600019 4.5 5.5 0.0176 0.0380 L016600600020 5.5 6.5 0.0233 0.0547 L016600600021 ENDDATA 7 0 L016600600022 ENDSUBENT 21 0 L016600699999 SUBENT L0166007 20120202 L018L016600700001 BIB 3 5 L016600700002 REACTION (92-U-238(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600700003 STATUS (TABLE) Data presented in fig. 6 of the reference L016600700004 sent by author (J.M.M.) L016600700005 SAMPLE (92-U-238,ENR=0.991) Mass of the sample was L016600700006 6.884g. L016600700007 ENDBIB 5 0 L016600700008 COMMON 2 3 L016600700009 EN-MIN EN-MAX L016600700010 MEV MEV L016600700011 5.8 6.2 L016600700012 ENDCOMMON 3 0 L016600700013 DATA 4 5 L016600700014 E-MIN E-MAX DATA DATA-ERR L016600700015 MEV MEV NO-DIM NO-DIM L016600700016 1.5 2.5 0.3889 0.0114 L016600700017 2.5 3.5 0.3915 0.0139 L016600700018 3.5 4.5 0.4578 0.0188 L016600700019 4.5 5.5 0.5036 0.0261 L016600700020 5.5 6.5 0.5667 0.0356 L016600700021 ENDDATA 7 0 L016600700022 ENDSUBENT 21 0 L016600799999 SUBENT L0166008 20120202 L018L016600800001 BIB 3 5 L016600800002 REACTION (94-PU-239(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600800003 STATUS (TABLE) Data presented in fig. 6 of the reference L016600800004 sent by author (J.M.M.) L016600800005 SAMPLE (94-PU-239,ENR=0.940) Mass of the sample was L016600800006 3.808g and main impurity was 5.8% of 240Pu. L016600800007 ENDBIB 5 0 L016600800008 COMMON 2 3 L016600800009 EN-MIN EN-MAX L016600800010 MEV MEV L016600800011 5.8 6.2 L016600800012 ENDCOMMON 3 0 L016600800013 DATA 4 5 L016600800014 E-MIN E-MAX DATA DATA-ERR L016600800015 MEV MEV NO-DIM NO-DIM L016600800016 1.5 2.5 0.0098 0.0142 L016600800017 2.5 3.5 -0.0364 0.0173 L016600800018 3.5 4.5 -1.964E-05 0.0237 L016600800019 4.5 5.5 -0.0111 0.0335 L016600800020 5.5 6.5 0.0741 0.0506 L016600800021 ENDDATA 7 0 L016600800022 ENDSUBENT 21 0 L016600899999 SUBENT L0166009 20120202 L018L016600900001 BIB 3 5 L016600900002 REACTION (90-TH-232(G,F)0-NN-1,PAR,POL/DA,,ASY/PP) L016600900003 STATUS (TABLE) Data presented in fig. 6 of the reference L016600900004 sent by author (J.M.M.) L016600900005 SAMPLE (90-TH-232,ENR=0.999) Mass of the sample was L016600900006 17.36g. L016600900007 ENDBIB 5 0 L016600900008 COMMON 2 3 L016600900009 EN-MIN EN-MAX L016600900010 MEV MEV L016600900011 5.8 6.2 L016600900012 ENDCOMMON 3 0 L016600900013 DATA 4 5 L016600900014 E-MIN E-MAX DATA DATA-ERR L016600900015 MEV MEV NO-DIM NO-DIM L016600900016 1.5 2.5 0.4278 0.0141 L016600900017 2.5 3.5 0.4493 0.0163 L016600900018 3.5 4.5 0.5340 0.0207 L016600900019 4.5 5.5 0.5938 0.0270 L016600900020 5.5 6.5 0.5410 0.0443 L016600900021 ENDDATA 7 0 L016600900022 ENDSUBENT 21 0 L016600999999 ENDENTRY 9 0 L016699999999