ENTRY 23589 20210226 22992358900000001 SUBENT 23589001 20210226 22992358900100001 BIB 14 35 2358900100002 TITLE Cold fragmentation in thermal neutron induced fission 2358900100003 of 235U 2358900100004 AUTHOR (J.Trochon,G.Simon,J.W.Behrens,F.Brisard,C.Signarbieux)2358900100005 REFERENCE (J,RE,92,327,1986) 2358900100006 #doi:10.1080/00337578608208344 2358900100007 INSTITUTE (2FR BRC) J.Trochon,G.Simon,,F.Brisard 2358900100008 (1USANBS) J.W.Behrens 2358900100009 (2FR SAC) C.Signarbieux 2358900100010 FACILITY (REAC,2FR SAC) Reactor ORPHEE at Saclay. 2358900100011 INC-SOURCE (REAC) 2358900100012 INC-SPECT Thermal neutrons. 2358900100013 SAMPLE 3 ug/cm2 thick 235UF(4) deposit evaporated onto 2358900100014 5 ug/cm2 carbon backing. 2358900100015 DETECTOR (IOCH) Twin-axial gridded ionization chamber. 2358900100016 Working gas - methane. 2358900100017 ANALYSIS Light mass Ml is deduced as 2358900100018 Ml=M*Eh/)Eh+El), where 2358900100019 M - mass of fissioning nucleus, 2358900100020 El, Eh - measured kinetic energy of light and heavy 2358900100021 fission fragment, respectively. 2358900100022 Energy calibration was done using and deduced2358900100023 from rel.refs of C.Schmitt+ and P.Geltenbort. 2358900100024 REL-REF (R,,C.Schmitt+,J,NP/A,430,21,1984) 2358900100025 (R,,P.Geltenbort,T,GELTENBORT,1983) PHD thesis, 2358900100026 Tubingen Un. 2358900100027 ERR-ANALYS Fission fragments kinetic energy resolution (FWHM ~ 2358900100028 300 keV. 2358900100029 Total kinetic energy resolution may be as low as 2358900100030 100 keV. 2358900100031 Fragment charges precision Z/deltaZ = 45. 2358900100032 ADD-RES Fig.2 of Radiation Effects,v.92,p.327,1986 - 2358900100033 solid curve of fragment yield (counts) dependence 2358900100034 from Ml for El > 110 MeV, measured at angle range 2358900100035 0 - 12 deg. 2358900100036 HISTORY (20210226C) M.M. 2358900100037 ENDBIB 35 0 2358900100038 COMMON 1 3 2358900100039 EN-DUMMY 2358900100040 EV 2358900100041 0.0253 2358900100042 ENDCOMMON 3 0 2358900100043 ENDSUBENT 42 0 2358900199999 SUBENT 23589002 20210226 22992358900200001 BIB 3 7 2358900200002 REACTION (92-U-235(N,F)MASS,PRE,KE,LF+HF,MSC) 2358900200003 Maximal total kinetic energy versus mass for cold 2358900200004 fragmentation (fission without neutron emission) 2358900200005 ERR-ANALYS Quantization error ( 1/2 pixel): 2358900200006 scale X - 0.051 a.m.u., scale Y - 0.026 MeV. 2358900200007 STATUS (CURVE) Fig.4 (dash line) of 2358900200008 Radiation Effects,v.92,p.327,1986 2358900200009 ENDBIB 7 0 2358900200010 COMMON 2 3 2358900200011 MASS-ERR-D ERR-DIG 2358900200012 NO-DIM MEV 2358900200013 0.079 0.054 2358900200014 ENDCOMMON 3 0 2358900200015 DATA 2 25 2358900200016 MASS DATA-MAX 2358900200017 NO-DIM MEV 2358900200018 83. 176.99 2358900200019 84. 179.30 2358900200020 85. 179.24 2358900200021 86. 180.81 2358900200022 87. 179.71 2358900200023 88. 180.02 2358900200024 89. 183.28 2358900200025 90. 184.53 2358900200026 91. 184.22 2358900200027 92. 185.42 2358900200028 93. 185.89 2358900200029 94. 186.63 2358900200030 95. 186.73 2358900200031 96. 189.35 2358900200032 97. 189.04 2358900200033 99. 192.13 2358900200034 100. 195.70 2358900200035 101. 196.80 2358900200036 102. 198.74 2358900200037 103. 199.10 2358900200038 104. 201.25 2358900200039 105. 200.78 2358900200040 106. 201.25 2358900200041 107. 198.89 2358900200042 108. 200.09 2358900200043 ENDDATA 27 0 2358900200044 ENDSUBENT 43 0 2358900299999 ENDENTRY 2 0 2358999999999