ENTRY 31424 20160929 31753142400000001 SUBENT 31424001 20160929 31753142400100001 BIB 15 34 3142400100002 TITLE Measurement of fast neutron induced fission cross 3142400100003 section of thorium using Lexan plastic track detector 3142400100004 AUTHOR (R.K.Jain, H.S.Virk, J.Rama Rao, S.K.Bose) 3142400100005 INSTITUTE (3INDBHU) 3142400100006 REFERENCE (J,PRM,49,515,1997) 3142400100007 (C,92BOMBAY,,288,1992) The same data in text. 3142400100008 SAMPLE A known weight of thorium nitrate was first dissolved 3142400100009 in 10 cm**3 distilled water and 0.25 cm**3 of this 3142400100010 solution was deposited on some Lexan plastics and 3142400100011 dried with an infrared lamp. 3142400100012 MONITOR (92-U-238(N,F),,SIG) Uranyl nitrate samples were 3142400100013 prepared in the same way and under the same conditions 3142400100014 as the thorium nitrate samples. 3142400100015 MONIT-REF (,P.H.White+,J,JNE,21,671,1967) 3142400100016 FACILITY (VDG,3INDBHU) 3142400100017 INC-SOURCE (D-T) Neutron flux 3. x 10**6 n/cm3/sec 3142400100018 METHOD (FISCT) 3142400100019 DETECTOR (TRD) Pieces of Lexan plastic, 200 micrometer thick 3142400100020 and with an area of 1 cm**2. After irradiation the 3142400100021 plastic pieces were etched in 6.25 N NaOH solution. 3142400100022 In each plastic foil an equal area was scanned. 3142400100023 ANALYSIS From the average ratio of track densities on both 3142400100024 U-238 and Th-232 coated plastics, which were irradia- 3142400100025 ted for different lengths of time, the ratio of 3142400100026 neutron-induced fission cross sections of Th-232 to 3142400100027 U-238 was determined. 3142400100028 ERR-ANALYS (DATA-ERR) No error analysis given. 3142400100029 STATUS (TABLE) Data are taken from the text in the Proceedings3142400100030 of the 35'Th Symposium on Nuclear Physics, Bombay, 3142400100031 21-24 Dec. 1992, pp. 288 - 289. 3142400100032 HISTORY (19931104C) HW 3142400100033 (20090730A) SD:Updated to new date formats,lower case. 3142400100034 MONITOR was corrected (232U => 238U) 3142400100035 (20160922A) VS. J,PRM,49,515,1997 added. 3142400100036 ENDBIB 34 0 3142400100037 COMMON 1 3 3142400100038 EN 3142400100039 MEV 3142400100040 14. 3142400100041 ENDCOMMON 3 0 3142400100042 ENDSUBENT 41 0 3142400199999 SUBENT 31424002 20100220 31443142400200001 BIB 1 1 3142400200002 REACTION (90-TH-232(N,F),,SIG) 3142400200003 ENDBIB 1 0 3142400200004 NOCOMMON 0 0 3142400200005 DATA 4 1 3142400200006 DATA DATA-ERR MONIT MONIT-ERR 3142400200007 B B B B 3142400200008 0.36 0.04 1.205 0.020 3142400200009 ENDDATA 3 0 3142400200010 ENDSUBENT 9 0 3142400299999 ENDENTRY 2 0 3142499999999