ENTRY 30084 20080215 31253008400000001 SUBENT 30084001 20080215 31253008400100001 BIB 15 34 3008400100002 INSTITUTE (3POLIPJ) 3008400100003 REFERENCE (R,INR-688,196602) desc of experim, graphs and table 3008400100004 AUTHOR (T.Czyzewski,P.Decowski,B.Fryszczyn) 3008400100005 TITLE Fission cross-section of Pu-239 at 13.1 To 15.4 MeV 3008400100006 FACILITY (VDG) neutrons were obtained from the T(d,n)He-4 reac- 3008400100007 tion by bombarding with deuterons accelerated to an 3008400100008 energy of 440 keV in Van-de-Graaff accelerator. 3008400100009 INC-SOURCE (D-T),a thin titanium target (0.280 mg/cm2) in which 3008400100010 tritium gas was absorbed. 3008400100011 SAMPLE Samples were made in the form of layers on disks of a 3008400100012 diameter of 6mm with the thickness of plutonium = 3008400100013 0.26 mg/cm2. 3008400100014 METHOD Counter ratio of U-238 and Pu-239 samples was 3008400100015 used.Plutonium samples were placed simultaneously at 3008400100016 various angles of neutron emission. Plutonium samples 3008400100017 along with the uranium samples were placed in shields 3008400100018 made from cadmium foil of a thickness of 0.5 mm. 3008400100019 DETECTOR (TRD) pieces of mica were used to detect fission 3008400100020 fragments. 3008400100021 ANALYSIS The ratio of the quantities of Pu-239 to those of 3008400100022 U-238 in the targets was obtained by measuring the 3008400100023 alpha-activity by semiconductor detector.The overall 3008400100024 error in the measurement of the quantity of Pu-239 was3008400100025 2 per cent, U-238 3 per cent. 3008400100026 MONITOR (92-U-238(N,F),,SIG) 3008400100027 Plutonium sigma fission was measured 3008400100028 relatively to that of U-238 and normalized to sigma 3008400100029 fission of U-238 from K.Parker,AWRE-0-79/1963. 3008400100030 PART-DET (FF) fission fragments 3008400100031 STATUS (TABLE) Data taken from Table 1,p.5 of INR-688(1966). 3008400100032 HISTORY (19670524C) compiled in Dastar-67 3008400100033 (19720105T) converted to Exfor Ca. 3008400100034 (20080305A) BIB section updated 3008400100035 ERR-ANALYS (ERR-S) Statistical errors of sigma are given only 3008400100036 ENDBIB 34 0 3008400100037 NOCOMMON 0 0 3008400100038 ENDSUBENT 37 0 3008400199999 SUBENT 30084002 20080215 31253008400200001 BIB 2 2 3008400200002 REACTION (94-PU-239(N,F),,SIG) 3008400200003 HISTORY (20080215S) Dataset was restored. 3008400200004 ENDBIB 2 0 3008400200005 NOCOMMON 0 0 3008400200006 DATA 5 5 3008400200007 EN +EN-RSL -EN-RSL DATA ERR-S 3008400200008 MEV MEV MEV B B 3008400200009 13.1 +0.2 -0.2 2.38 0.10 3008400200010 13.5 +0.1 -0.2 2.42 0.09 3008400200011 14.2 +0.1 -0.1 2.45 0.10 3008400200012 14.8 +0.2 -0.2 2.42 0.09 3008400200013 15.3 +0.1 -0.2 2.37 0.10 3008400200014 ENDDATA 7 0 3008400200015 ENDSUBENT 14 0 3008400299999 ENDENTRY 2 0 3008499999999