ENTRY 20384 20180716 226920384 0 1 SUBENT 20384001 20180713 226920384 1 1 BIB 13 45 20384 1 2 INSTITUTE (2ZZZGEL) 20384 1 3 (2BLGGHT) Head author's present address. 20384 1 4 REFERENCE (J,NP/A,212,556,1973) 20384 1 5 (P,EANDC(E)-150,70,197303) Progress report. 20384 1 6 (C,73ROCH,2,417,1973) 20384 1 7 = S,STI/PUB/347-v2,417,1974 20384 1 8 = IAEA-SM-174/34 . 20384 1 9 Authors: A.J.Deruytter, W.Becker, C.Wagemans 20384 1 10 REL-REF (N,,C.Wagemans+,J,NP/A,194,657,1972) 20384 1 11 Similar experiment for U-235 . 20384 1 12 AUTHOR (C.Wagemans, A.J.Deruytter) 20384 1 13 TITLE -Ratio of the ternary to binary fission induced by 20384 1 14 thermal and resonance neutrons in Pu-239.- 20384 1 15 FACILITY (LINAC,2ZZZGEL) Electron linear accelerator of CBNM. 20384 1 16 INC-SOURCE (PHOTO) Photo-neutron 20384 1 17 INC-SPECT .Neutrons from LINAC were slowed down by 4 cm thick 20384 1 18 polyethylene sheet placed above the mercury-cooled 20384 1 19 uranium target. 20384 1 20 .Several concentric Pb rings(50 mm thick) were mounted 20384 1 21 around the target to reduce gamma-flash and very fast 20384 1 22 neutrons in the spectrum. 20384 1 23 SAMPLE .Electro-spraying of highly enriched plutonium acetate 20384 1 24 on both sides of a 0.2 mm thick aluminum disk. 20384 1 25 .Isotopic composition is (in atomic percent). 20384 1 26 Pu-238 less 0.005, Pu-239 99.956 +- 0.010, 20384 1 27 Pu-240 0.044 +- 0.010, Pu-241 less 0.005. 20384 1 28 METHOD (TOF) Time of flight, path = 8.1 m. 20384 1 29 3 series of measurements were done, run I and II 20384 1 30 cover the energy region 0.1 to 50 eV using cadmium as 20384 1 31 overlap filter, and run III for n-energy of 0.01 to 20384 1 32 15 eV without filter. 20384 1 33 DETECTOR (SOLST) 4 large Si(Au) solid-state detectors(30 mm 20384 1 34 diam.) on both sides of evacuated cylindrical chamber.20384 1 35 In the center of this chamber a double-faced Pu-239 20384 1 36 layer is mounted (back-to-back) 20384 1 37 .Neutron spectrum were checked with Si(Au) surface- 20384 1 38 barrier detectors and a B-10 layer. 20384 1 39 PART-DET (FF,A) Fission fragments, alphas. 20384 1 40 HISTORY (19731218C) 20384 1 41 (19741011E) 20384 1 42 (20180713A) M.M. Ref. C,73ROCH,2,417,1973 was added. 20384 1 43 Upper -> lower case correction. 20384 1 44 Dates were corrected for 4-digits year. 20384 1 45 BIB information was updated. 20384 1 46 Subents 002-004 were corrected. 20384 1 47 ENDBIB 45 0 20384 1 48 NOCOMMON 0 0 20384 1 49 ENDSUBENT 48 0 20384 199999 SUBENT 20384002 20180713 226920384 2 1 BIB 7 16 20384 2 2 REACTION (94-PU-239(N,F)2-HE-4,TER,FY,,RES/REL) 20384 2 3 Ratios ternary/binary fission at resonance energy, 20384 2 4 weighted mean of run I and II. 20384 2 5 MONITOR .Ternary to binary fission ratios are normalized to the20384 2 6 value 100 for the 10.95 eV resonance. 20384 2 7 FLAG (1.) For resonances at 14.30,14.68 and 15.50 eV 20384 2 8 as a group. 20384 2 9 ANALYSIS Average of measurements I and II . 20384 2 10 ERR-ANALYS (ERR-S) Statistical errors are given. 20384 2 11 STATUS (TABLE) Data from Table 2 of Nucl.Phys.A212(1973)556. 20384 2 12 Table II of Conf.Proc. 73ROCH,2,417,1973 20384 2 13 HISTORY (20180713A) M.M. DATA-ERR -> ERR-S 20384 2 14 Reaction was corrected: 20384 2 15 ),TER/BIN,SIG/RAT,,RES/REL) 20384 2 16 -> )2-HE-4,TER,FY,,RES/MSC) 20384 2 17 according to a comment of N.Otsuka(NDS,IAEA) 20384 2 18 ENDBIB 16 0 20384 2 19 NOCOMMON 0 0 20384 2 20 DATA 4 12 20384 2 21 EN-RES DATA ERR-S FLAG 20384 2 22 MEV ARB-UNITS ARB-UNITS NO-DIM 20384 2 23 7.8500E-06 9.9000E+01 2.1 20384 2 24 1.0950E-05 1.0000E+02 1.6 20384 2 25 1.1900E-05 1.0000E+02 3.0 20384 2 26 1.4300E-05 1.0690E+02 3.4 20384 2 27 1.4680E-05 1.0070E+02 2.6 20384 2 28 1.5000E-05 1.0490E+02 1.8 1. 20384 2 29 1.5500E-05 1.1060E+02 3.3 20384 2 30 1.7700E-05 1.0250E+02 3.0 20384 2 31 2.2200E-05 1.0380E+02 2.8 20384 2 32 2.6200E-05 1.0660E+02 4.3 20384 2 33 4.7800E-05 9.8300E+01 5.9 20384 2 34 5.0100E-05 1.0120E+02 5.6 20384 2 35 ENDDATA 14 0 20384 2 36 ENDSUBENT 35 0 20384 299999 SUBENT 20384003 20180713 226920384 3 1 BIB 6 15 20384 3 2 REACTION (94-PU-239(N,F)2-HE-4,TER,FY,,REL) 20384 3 3 Ratios ternary/binary fission, run III(0.01 to 15 eV).20384 3 4 MONITOR .Ternary to binary fission ratios are normalized to the20384 3 5 weighted mean of the 7.85, 10.95 and 11.90 eV 20384 3 6 resonance, as obtained from exp. runs I and II 20384 3 7 (T/B = 99.7 +- 1.2) 20384 3 8 FLAG (1.) Resonance energy. 20384 3 9 ERR-ANALYS (ERR-S) Statistical errors are given. 20384 3 10 STATUS (TABLE) Table 3 of Nucl.Phys.A212(1973)556. 20384 3 11 Table IV of Conf.Proc. 73ROCH,2,417,1973 20384 3 12 HISTORY (20180713A) M.M. DATA-ERR -> ERR-S 20384 3 13 Reaction was corrected: 20384 3 14 ),TER/BIN,SIG/RAT,,RES/REL) 20384 3 15 -> )2-HE-4,TER,FY,,REL) 20384 3 16 according to a comment of N.Otsuka(NDS,IAEA) 20384 3 17 ENDBIB 15 0 20384 3 18 NOCOMMON 0 0 20384 3 19 DATA 4 43 20384 3 20 EN DATA ERR-S FLAG 20384 3 21 MEV ARB-UNITS ARB-UNITS NO-DIM 20384 3 22 1.9700E-08 1.0500E+02 3.8000E+00 20384 3 23 2.1200E-08 1.0050E+02 3.5000E+00 20384 3 24 2.3000E-08 1.0420E+02 3.3000E+00 20384 3 25 2.5000E-08 1.0030E+02 3.0000E+00 20384 3 26 2.7300E-08 1.0610E+02 3.0000E+00 20384 3 27 2.9900E-08 9.9100E+01 2.7000E+00 20384 3 28 3.2900E-08 1.0430E+02 2.6000E+00 20384 3 29 3.6400E-08 1.0270E+02 2.4000E+00 20384 3 30 4.0400E-08 9.8900E+01 2.3000E+00 20384 3 31 4.3900E-08 1.0310E+02 3.1000E+00 20384 3 32 4.6500E-08 9.7600E+01 3.0000E+00 20384 3 33 4.9300E-08 1.0030E+02 2.9000E+00 20384 3 34 5.2400E-08 9.8700E+01 2.9000E+00 20384 3 35 5.5800E-08 1.0200E+02 2.7000E+00 20384 3 36 5.9600E-08 1.0280E+02 2.7000E+00 20384 3 37 6.3700E-08 1.0370E+02 2.6000E+00 20384 3 38 6.8300E-08 1.0400E+02 2.6000E+00 20384 3 39 7.3300E-08 1.0290E+02 2.6000E+00 20384 3 40 7.9000E-08 1.0340E+02 2.6000E+00 20384 3 41 8.5300E-08 1.0540E+02 2.6000E+00 20384 3 42 9.2500E-08 1.0140E+02 2.6000E+00 20384 3 43 1.0100E-07 9.8700E+01 2.6000E+00 20384 3 44 1.1000E-07 1.0250E+02 2.6000E+00 20384 3 45 1.2000E-07 1.0380E+02 2.6000E+00 20384 3 46 1.3200E-07 1.0110E+02 2.6000E+00 20384 3 47 1.4600E-07 1.0400E+02 2.6000E+00 20384 3 48 1.6300E-07 1.0590E+02 2.6000E+00 20384 3 49 1.8200E-07 1.0620E+02 2.5000E+00 20384 3 50 2.0500E-07 1.0180E+02 2.1000E+00 20384 3 51 2.2500E-07 1.0550E+02 2.6000E+00 20384 3 52 2.4000E-07 1.0230E+02 2.3000E+00 20384 3 53 2.5700E-07 1.0270E+02 2.0000E+00 20384 3 54 2.7500E-07 1.0100E+02 1.7000E+00 20384 3 55 2.9600E-07 1.0220E+02 1.6000E+00 20384 3 56 2.9600E-07 1.0220E+02 6.5000E-01 1. 20384 3 57 3.1900E-07 1.0090E+02 1.8000E+00 20384 3 58 3.4500E-07 9.9900E+01 2.2000E+00 20384 3 59 3.7400E-07 1.0390E+02 2.9000E+00 20384 3 60 4.6500E-07 1.0200E+02 2.2000E+00 20384 3 61 8.8600E-07 1.0240E+02 2.9000E+00 20384 3 62 7.8500E-06 9.7000E+01 4.6000E+00 1. 20384 3 63 1.0950E-05 1.0220E+02 3.7000E+00 1. 20384 3 64 1.1900E-05 9.7000E+01 6.7000E+00 1. 20384 3 65 ENDDATA 45 0 20384 3 66 ENDSUBENT 65 0 20384 399999 SUBENT 20384004 20180713 226920384 4 1 BIB 4 8 20384 4 2 REACTION 1(94-PU-239(N,0),,EN) 20384 4 3 2(94-PU-239(N,0),,J) 20384 4 4 FLAG (1.) Uncertain value ( given in brackets) 20384 4 5 STATUS (TABLE) Tables 6,7 of Nucl.Phys.A212(1973)556. 20384 4 6 Tables Va,b of Conf.Proc. 73ROCH,2,417,1973 20384 4 7 HISTORY (19740807L) 20384 4 8 (20180713A) M.M. STATUS was added. 20384 4 9 SPIN J data and FLAG were added. 20384 4 10 ENDBIB 8 0 20384 4 11 NOCOMMON 0 0 20384 4 12 DATA 3 12 20384 4 13 DATA 1DATA 2FLAG 20384 4 14 EV NO-DIM NO-DIM 20384 4 15 2.9600E-01 1. 20384 4 16 7.8500E+00 1. 20384 4 17 1.0950E+01 1. 20384 4 18 1.1900E+01 1. 20384 4 19 1.4300E+01 0. 1. 20384 4 20 1.4680E+01 1. 20384 4 21 1.5500E+01 0. 20384 4 22 1.7700E+01 1. 20384 4 23 2.2200E+01 20384 4 24 2.6200E+01 0. 1. 20384 4 25 4.7800E+01 1. 1. 20384 4 26 5.0100E+01 1. 20384 4 27 ENDDATA 14 0 20384 4 28 ENDSUBENT 27 0 20384 499999 ENDENTRY 4 0 2038499999999