ENTRY 33032 20110609 31523303200000001 SUBENT 33032001 20110609 31523303200100001 BIB 11 43 3303200100002 TITLE Kinetic-energy distributions and the correlation of 3303200100003 anisotropy and asymmetry in the 4-MeV neutron-induced 3303200100004 fission of U235 3303200100005 AUTHOR (S.S.Kapoor, D.M.Nadkarni, R.Ramanna, P.N.Rama Rao) 3303200100006 INSTITUTE (3INDTRM) Atomic Energy Establishment, Trombay, Bombay 3303200100007 REFERENCE (J,PR,137,B511,1965) 3303200100008 FACILITY (VDG,3INDTRM) 5.5 MeV Van de Graaff generator 3303200100009 INC-SOURCE (P-T) T(p,n)3He. The maximum neutron energy: ~4.2 MeV 3303200100010 INC-SPECT Spread in the energy of the neutrons due to slowing 3303200100011 down of the protons in the target and the divergence 3303200100012 of the neutron beam was estimated to be ~200 keV. 3303200100013 SAMPLE The uranium target was prepared by electrospraying 3303200100014 about 300 microgram of U-235 over an area of 1 sq cm 3303200100015 on to a VYNS foil coated with a thin layer of gold. 3303200100016 The thickness of the VYNS foil and the gold layer was 3303200100017 estimated to be about 10 and 15 microgram/cm**2 3303200100018 respectively. 3303200100019 DETECTOR (SOLST) The uranium foil and three identical solid- 3303200100020 state detectors of the diffused-junction type were 3303200100021 mounted inside a vacuum chamber. 3303200100022 Each detector had a resistivity of 5500 ohm-cm, window 3303200100023 thickness of less than 1 micron of silicon, and a 3303200100024 sensitive depth of about 160 micron and was operated 3303200100025 with 50 V reversed bias. 3303200100026 The distance between the surface of one of the 3303200100027 detectors (referred to as common detector) and the 3303200100028 foil was about 0.2 cm so that most of the fragments 3303200100029 emitted in the backward hemisphere were detected by 3303200100030 it. 3303200100031 At each of the angles of 0 and 90 deg. with the 3303200100032 incident direction the fragments were detected with 3303200100033 an angular spread of +/-18 deg. 3303200100034 The divergence of the incident neutron beam was 3303200100035 calculated to be approximately 3 deg. 3303200100036 The number of fission fragments detected by the common 3303200100037 detector was about 40/min and that detected by each of3303200100038 the 0 and 90 deg. detectors was about 3/min. 3303200100039 ADD-RES (E-DIS) The total kinetic energy distributions for the 3303200100040 various fragment mass ratios for the 0 deg and 90 deg 3303200100041 data. 3303200100042 HISTORY (20110223C) Megha Bhike, Nuclear Physics Division, BARC3303200100043 (20110609A) On. Finalized. 3303200100044 (20110818A) On. REFERENCE: PR/C -> PR 3303200100045 ENDBIB 43 0 3303200100046 COMMON 2 3 3303200100047 EN EN-RSL 3303200100048 MEV MEV 3303200100049 4.2 0.2 3303200100050 ENDCOMMON 3 0 3303200100051 ENDSUBENT 50 0 3303200199999 SUBENT 33032002 20110609 31513303200200001 BIB 2 5 3303200200002 REACTION 1(92-U-235(N,F)MASS,SEC,FY,,REL) 3303200200003 0 deg data (uncorrected for neutron emission) 3303200200004 2(92-U-235(N,F)MASS,SEC,FY,,REL) 3303200200005 90 deg data (uncorrected for neutron emission) 3303200200006 STATUS (CURVE) Fig.3a of Phys.Rev.137(1965)B511 3303200200007 ENDBIB 5 0 3303200200008 NOCOMMON 0 0 3303200200009 DATA 3 25 3303200200010 MASS DATA 1DATA 2 3303200200011 NO-DIM ARB-UNITS ARB-UNITS 3303200200012 110. 0.138 0.105 3303200200013 112. 0.175 0.133 3303200200014 114. 0.242 0.149 3303200200015 116. 0.297 0.276 3303200200016 118. 0.451 0.421 3303200200017 120. 0.720 0.687 3303200200018 122. 0.976 0.982 3303200200019 124. 1.301 1.256 3303200200020 126. 1.530 1.431 3303200200021 128. 1.711 1.543 3303200200022 130. 1.808 1.715 3303200200023 132. 1.857 1.617 3303200200024 134. 1.942 1.570 3303200200025 136. 1.580 1.295 3303200200026 138. 1.413 1.035 3303200200027 140. 1.095 0.843 3303200200028 142. 0.784 0.574 3303200200029 144. 0.503 0.407 3303200200030 146. 0.324 0.288 3303200200031 148. 0.222 0.159 3303200200032 150. 0.076 0.097 3303200200033 152. 0.056 0.071 3303200200034 154. 0.027 0.027 3303200200035 156. 0.037 0.040 3303200200036 158. 0.041 0.041 3303200200037 ENDDATA 27 0 3303200200038 ENDSUBENT 37 0 3303200299999 SUBENT 33032003 20110609 31513303200300001 BIB 3 7 3303200300002 REACTION 1(92-U-235(N,F)MASS,PRE,FY,,REL) 3303200300003 0 deg data (corrected for neutron emission) 3303200300004 2(92-U-235(N,F)MASS,PRE,FY,,REL) 3303200300005 90 deg data (corrected for neutron emission) 3303200300006 ERR-ANALYS (MASS-ERR-D) Digitizing error 3303200300007 (ERR-DIG) Digitizing error 3303200300008 STATUS (CURVE) Fig.3b of Phys.Rev.137(1965)B511 3303200300009 ENDBIB 7 0 3303200300010 COMMON 2 3 3303200300011 MASS-ERR-D ERR-DIG 3303200300012 NO-DIM NO-DIM 3303200300013 0.04 0.003 3303200300014 ENDCOMMON 3 0 3303200300015 DATA 3 21 3303200300016 MASS DATA 1DATA 2 3303200300017 NO-DIM ARB-UNITS ARB-UNITS 3303200300018 109.89 0.133 0.108 3303200300019 111.76 0.177 0.128 3303200300020 113.75 0.237 0.152 3303200300021 116.00 0.301 0.266 3303200300022 118.12 0.439 0.405 3303200300023 120.12 0.721 0.687 3303200300024 122.49 0.954 0.919 3303200300025 124.37 1.266 1.221 3303200300026 126.50 1.489 1.399 3303200300027 128.25 1.692 1.627 3303200300028 130.37 1.771 1.706 3303200300029 132.49 1.869 1.815 3303200300030 134.23 1.924 1.750 3303200300031 136.32 1.542 1.374 3303200300032 138.43 1.389 1.017 3303200300033 140.53 1.081 0.824 3303200300034 142.63 0.769 0.566 3303200300035 144.48 0.492 0.408 3303200300036 146.46 0.308 0.269 3303200300037 148.32 0.199 0.145 3303200300038 150.42 0.065 0.100 3303200300039 ENDDATA 23 0 3303200300040 ENDSUBENT 39 0 3303200399999 SUBENT 33032004 20110609 31513303200400001 BIB 4 8 3303200400002 REACTION (92-U-235(N,F)MASS,,DA,FF,RSD/MSC) 3303200400003 Anisotropy N(0deg)/N(90deg) v.s. M(HF)/M(LF) 3303200400004 COMMENT By author: 3303200400005 This plot is independent of neutron emission effect 3303200400006 ERR-ANALYS (ERR-S) Statistical error 3303200400007 (MISC-ERR-D) Digitizing error in mass ratio 3303200400008 (ERR-DIG) Digitizing error 3303200400009 STATUS (CURVE) Fig.4 of Phys.Rev.137(1965)B511 3303200400010 ENDBIB 8 0 3303200400011 COMMON 3 3 3303200400012 ANG MISC-ERR-D ERR-DIG 3303200400013 ADEG NO-DIM NO-DIM 3303200400014 0. 0.0010 0.002 3303200400015 ENDCOMMON 3 0 3303200400016 DATA 3 11 3303200400017 MASS-RATIO DATA ERR-S 3303200400018 NO-DIM NO-DIM NO-DIM 3303200400019 1.0470 1.141 0.112 3303200400020 1.1305 1.070 0.096 3303200400021 1.2076 1.041 0.042 3303200400022 1.2881 1.051 0.029 3303200400023 1.3782 1.067 0.022 3303200400024 1.4814 1.191 0.032 3303200400025 1.5876 1.226 0.038 3303200400026 1.7069 1.332 0.045 3303200400027 1.8384 1.190 0.086 3303200400028 1.9864 1.193 0.112 3303200400029 2.1498 0.902 0.202 3303200400030 ENDDATA 13 0 3303200400031 ENDSUBENT 30 0 3303200499999 SUBENT 33032005 20110609 31513303200500001 BIB 3 6 3303200500002 REACTION 1(92-U-235(N,F),PRE,AKE,LF+HF) 3303200500003 0 deg data 3303200500004 2(92-U-235(N,F),PRE,AKE,LF+HF) 3303200500005 90 deg data 3303200500006 MISC-COL (MISC) rms deviation of total kin. energy distribution 3303200500007 STATUS (TABLE) Text (p.515) of Phys.Rev.137(1965)B511 3303200500008 ENDBIB 6 0 3303200500009 NOCOMMON 0 0 3303200500010 DATA 8 1 3303200500011 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC 1MISC-ERR 13303200500012 MISC 2MISC-ERR 2 3303200500013 MEV MEV MEV MEV MEV MEV 3303200500014 MEV MEV 3303200500015 165.4 1.1 166.0 1.1 11.70 0.06 3303200500016 10.85 0.06 3303200500017 ENDDATA 6 0 3303200500018 ENDSUBENT 17 0 3303200599999 SUBENT 33032006 20110609 31513303200600001 BIB 3 7 3303200600002 REACTION 1(92-U-235(N,F)MASS,SEC,KE,LF+HF,MSC) 3303200600003 0 deg data 3303200600004 2(92-U-235(N,F)MASS,SEC,KE,LF+HF,MSC) 3303200600005 90 deg data 3303200600006 ERR-ANALYS (MISC-ERR-D) Digitizing error in mass ratio 3303200600007 (ERR-DIG) Digitizing error 3303200600008 STATUS (CURVE) Fig.5a of Phys.Rev.137(1965)B511 3303200600009 ENDBIB 7 0 3303200600010 COMMON 2 3 3303200600011 MISC-ERR-D ERR-DIG 3303200600012 NO-DIM MEV 3303200600013 0.0015 0.09 3303200600014 ENDCOMMON 3 0 3303200600015 DATA 3 20 3303200600016 MASS-RATIO DATA 1DATA 2 3303200600017 NO-DIM MEV MEV 3303200600018 1.0691 162.45 160.25 3303200600019 1.1059 163.35 162.62 3303200600020 1.1503 166.27 165.54 3303200600021 1.1944 166.63 168.45 3303200600022 1.2351 169.18 169.91 3303200600023 1.2719 169.90 170.45 3303200600024 1.3086 168.80 170.62 3303200600025 1.3600 168.60 169.52 3303200600026 1.4004 167.50 168.04 3303200600027 1.4554 166.21 165.47 3303200600028 1.5141 164.18 165.46 3303200600029 1.5655 163.08 163.81 3303200600030 1.6168 161.24 162.52 3303200600031 1.6792 160.13 161.22 3303200600032 1.7416 158.84 159.39 3303200600033 1.8004 158.28 156.27 3303200600034 1.8700 155.34 155.89 3303200600035 1.9507 153.31 154.41 3303200600036 2.0241 151.47 150.55 3303200600037 2.1010 147.25 148.89 3303200600038 ENDDATA 22 0 3303200600039 ENDSUBENT 38 0 3303200699999 ENDENTRY 6 0 3303299999999