ENTRY 30544 20210414 31993054400000001 SUBENT 30544001 20210414 31993054400100001 BIB 12 23 3054400100002 TITLE Angular correlation of neutrons from thermal-neutron 3054400100003 fission of 235U 3054400100004 AUTHOR (C.B.Franklyn, C.Hofmeyer, D.W.Mingay) 3054400100005 REFERENCE (J,PL/B,78,564,1978) 3054400100006 INSTITUTE (3SAFPEL) 3054400100007 FACILITY (REAC,3SAFPEL) SAFAR-I reactor 3054400100008 INC-SPECT Subthermal neutron beam 3054400100009 SAMPLE (92-U-235,ENR=0.3) Uranium disk, 2 mm x 30 mm diam. 3054400100010 METHOD (COINC) Angular correlation of fission neutrons measure3054400100011 (PSD) Neutron-gamma pulse shape discrimination 3054400100012 DETECTOR (SCIN) Two stilbene neutron detectors 3054400100013 COMMENT The results give no indication of enhanced polar 3054400100014 emission. 3054400100015 STATUS (APRVD) Approved by letter from Hofmeyer (18/12/1980) 3054400100016 HISTORY (19800915C) HL. 3054400100017 (19810122A) OS. Contents of subentry.003 changed, 3054400100018 corr.in subentry.002, author proof added. 3054400100019 (19980518U) HW. REACTION code updated in sub .003. 3054400100020 (20030922A) OS. REACTION codes corrected, changed 3054400100021 to lower case and 4-digit year. 3054400100022 (20120627A) VS. REACTION code updated in Subent 003. 3054400100023 (20130924A) VS. ASSUM units in subent.002 corrected. 3054400100024 (20210414A) On. MAjor revision in 003. 3054400100025 ENDBIB 23 0 3054400100026 COMMON 1 3 3054400100027 EN-APRX 3054400100028 EV 3054400100029 0.02 3054400100030 ENDCOMMON 3 0 3054400100031 ENDSUBENT 30 0 3054400199999 SUBENT 30544002 20210414 31993054400200001 BIB 6 25 3054400200002 REACTION (92-U-235(N,F),PR/NUM,NU,,,DERIV) 3054400200003 ANALYSIS Prompt neutron emission probability distribution 3054400200004 provided by a Monte-Carlo simulation which was 3054400200005 performed assuming 3054400200006 - binomial distribution for the neutron multiplicity 3054400200007 (Gaussian distribution does not permit fitting 3054400200008 the data) 3054400200009 - isotropic neutron emission in fully accelerated 3054400200010 fragment frames 3054400200011 - a 20% isotropic scission component (omitting this 3054400200012 component does not permit fitting the data). 3054400200013 This simulation provides adequate fitting to 3054400200014 - the authors' measured neutron-neutron angular 3054400200015 correlation data 3054400200016 - a Maxwellian fission-neutron spectrum with 3054400200017 kT=1.33 MeV 3054400200018 - Skarsvag's angular correlation data between prompt 3054400200019 fission neutrons and light fragments. 3054400200020 ASSUMED (ASSUM,92-U-235(N,F),PR,NU) 3054400200021 Data given consistent with nu-p=2.415 3054400200022 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 3054400200023 STATUS (TABLE) Table 1 of Phys.Lett.B 78(1978)564 3054400200024 HISTORY (20030922A) OS. REACTION code, headings and units corr.3054400200025 (20130924A) VS. ASSUM units corrected. 3054400200026 (20210414U) On. Original number expression restored. 3054400200027 ENDBIB 25 0 3054400200028 COMMON 1 3 3054400200029 ASSUM 3054400200030 PRT/FIS 3054400200031 2.415 3054400200032 ENDCOMMON 3 0 3054400200033 DATA 3 7 3054400200034 PART-OUT DATA DATA-ERR 3054400200035 NO-DIM NO-DIM NO-DIM 3054400200036 0. 0.055 0.001 3054400200037 1. 0.195 0.002 3054400200038 2. 0.297 0.003 3054400200039 3. 0.258 0.003 3054400200040 4. 0.137 0.002 3054400200041 5. 0.048 0.001 3054400200042 6. 0.011 0.001 3054400200043 ENDDATA 9 0 3054400200044 ENDSUBENT 43 0 3054400299999 SUBENT 30544003 20210414 31993054400300001 BIB 4 9 3054400300002 REACTION (92-U-235(N,F),PAR,DA,N+N,MSC) 3054400300003 Angular correlation of prompt fission neutrons 3054400300004 ERR-ANALYS (DATA-ERR) No information on the source of uncertainty 3054400300005 STATUS (TABLE) Numerical data received from Hofmeyer 3054400300006 HISTORY (19801218R) Data received from Hofmeyer (18/12/1980) 3054400300007 (19980518U) HW.- REACTION code updated.- 3054400300008 (20030321A) OS. - REACTION code corrected. 3054400300009 (20120627A) VS. REACTION code updated: Memo CP-D/748 3054400300010 (20210414A) On. Vector common formalism cancelled. 3054400300011 ENDBIB 9 0 3054400300012 NOCOMMON 0 0 3054400300013 DATA 4 60 3054400300014 E-MIN ANG-RL DATA DATA-ERR 3054400300015 MEV ADEG ARB-UNITS ARB-UNITS 3054400300016 1.0 9. 3.99 0.20 3054400300017 1.0 18. 3.28 0.14 3054400300018 1.0 27. 3.16 0.08 3054400300019 1.0 36. 2.74 0.09 3054400300020 1.0 45. 2.33 0.11 3054400300021 1.0 54. 2.41 0.11 3054400300022 1.0 63. 2.00 0.10 3054400300023 1.0 72. 1.86 0.12 3054400300024 1.0 81. 1.74 0.13 3054400300025 1.0 90. 1.86 0.05 3054400300026 1.0 99. 2.01 0.13 3054400300027 1.0 108. 2.18 0.16 3054400300028 1.0 117. 2.00 0.15 3054400300029 1.0 126. 2.31 0.10 3054400300030 1.0 135. 2.90 0.17 3054400300031 1.0 144. 2.88 0.12 3054400300032 1.0 153. 3.07 0.12 3054400300033 1.0 162. 3.63 0.23 3054400300034 1.0 171. 3.57 0.10 3054400300035 1.0 180. 3.49 0.08 3054400300036 1.75 9. 5.60 0.57 3054400300037 1.75 18. 4.09 0.39 3054400300038 1.75 27. 3.49 0.20 3054400300039 1.75 36. 3.03 0.24 3054400300040 1.75 45. 2.77 0.29 3054400300041 1.75 54. 2.29 0.28 3054400300042 1.75 63. 1.95 0.27 3054400300043 1.75 72. 1.82 0.34 3054400300044 1.75 81. 1.47 0.34 3054400300045 1.75 90. 1.69 0.12 3054400300046 1.75 99. 1.64 0.33 3054400300047 1.75 108. 2.17 0.43 3054400300048 1.75 117. 2.09 0.37 3054400300049 1.75 126. 2.71 0.27 3054400300050 1.75 135. 2.73 0.44 3054400300051 1.75 144. 3.35 0.34 3054400300052 1.75 153. 3.05 0.31 3054400300053 1.75 162. 3.02 0.56 3054400300054 1.75 171. 4.06 0.26 3054400300055 1.75 180. 3.90 0.21 3054400300056 2.5 9. 5.43 1.56 3054400300057 2.5 18. 4.93 1.11 3054400300058 2.5 27. 2.70 0.49 3054400300059 2.5 36. 3.36 0.85 3054400300060 2.5 45. 3.61 0.80 3054400300061 2.5 54. 1.84 0.73 3054400300062 2.5 63. 1.59 0.69 3054400300063 2.5 72. 0.98 0.67 3054400300064 2.5 81. 1.52 0.79 3054400300065 2.5 90. 1.87 0.34 3054400300066 2.5 99. 2.85 0.93 3054400300067 2.5 108. 3.59 1.68 3054400300068 2.5 117. 1.94 1.00 3054400300069 2.5 126. 2.33 0.74 3054400300070 2.5 135. 2.02 1.04 3054400300071 2.5 144. 3.92 0.98 3054400300072 2.5 153. 4.66 0.97 3054400300073 2.5 162. 3.74 1.58 3054400300074 2.5 171. 3.98 0.68 3054400300075 2.5 180. 3.50 0.55 3054400300076 ENDDATA 62 0 3054400300077 ENDSUBENT 76 0 3054400399999 ENDENTRY 3 0 3054499999999