ENTRY 21521 20090315 22082152100000001 SUBENT 21521001 20090315 22082152100100001 BIB 13 23 2152100100002 INSTITUTE (2UK HAR) 2152100100003 REFERENCE (R,AERE-NP/R-2033,195609) 2152100100004 AUTHOR (J.A.Phillips) 2152100100005 TITLE -The N,2N cross section of U-238 and Th-232 for 14 MeV 2152100100006 neutrons -. 2152100100007 FACILITY (CCW ) Cockcroft-walton accelerator. 2152100100008 INC-SOURCE (D-T ) 400 KeV deuterium beam on a zirconium 2152100100009 tritide target. Flux determination by associated alph 2152100100010 counting. 2152100100011 SAMPLE .Three grams of natural uranyl nitrate and two 2152100100012 grams of thorium dioxide. Fission and natural decay 2152100100013 products were chemically removed from the uranium 2152100100014 sample and the thorium was made into a foil. 2152100100015 METHOD (ACTIV) Activation, decay gamma counting. 2152100100016 DETECTOR (PROPC) Xenon filled proportional counter for 2152100100017 uranium and krypton filled proportional counter 2152100100018 for the thorium gammas. 2152100100019 CORRECTION .Corrected for self shielding of decy gammas. 2152100100020 ERR-ANALYS (ERR-S) One standard deviation, statistical error. 2152100100021 STATUS .Values from page 5 of report. 2152100100022 HISTORY (19800422C) 2152100100023 (19800429E) 2152100100024 (20090315U) DATA-ERR changed to ERR-S 2152100100025 ENDBIB 23 0 2152100100026 COMMON 1 3 2152100100027 EN-ERR 2152100100028 MEV 2152100100029 1.E-01 2152100100030 ENDCOMMON 3 0 2152100100031 ENDSUBENT 30 0 2152100199999 SUBENT 21521002 20090315 22082152100200001 BIB 4 7 2152100200002 REACTION (90-TH-232(N,2N)90-TH-231,,SIG) cross section. 2152100200003 DECAY-DATA (90-TH-231,24.3HR,DG,25.6,0.205) measured half-life 2152100200004 of 24.3 HR in agreement with 25.6 HR from JAFFEY. 2152100200005 STATUS .Page 5. 2152100200006 HISTORY (19800422C) 2152100200007 (19800429E) 2152100200008 (20090315U) DATA-ERR changed to ERR-S 2152100200009 ENDBIB 7 0 2152100200010 NOCOMMON 0 0 2152100200011 DATA 3 1 2152100200012 EN DATA ERR-S 2152100200013 MEV B B 2152100200014 1.5000E+01 1.1000E+00 1.0000E-01 2152100200015 ENDDATA 3 0 2152100200016 ENDSUBENT 15 0 2152100299999 SUBENT 21521003 20090315 22082152100300001 BIB 4 7 2152100300002 REACTION (92-U-238(N,2N)92-U-237,,SIG) Cross section. 2152100300003 DECAY-DATA (92-U-237,6.75D,DG,59.6) Intensity per disintegration 2152100300004 assumed to be the same as for Am-241. 2152100300005 STATUS .Page 5. 2152100300006 HISTORY (19800422C) 2152100300007 (19800429E) 2152100300008 (20090315U) DATA-ERR changed to ERR-S 2152100300009 ENDBIB 7 0 2152100300010 NOCOMMON 0 0 2152100300011 DATA 3 1 2152100300012 EN DATA ERR-S 2152100300013 MEV B B 2152100300014 1.41E+01 6.5E-01 5.E-02 2152100300015 ENDDATA 3 0 2152100300016 ENDSUBENT 15 0 2152100399999 ENDENTRY 3 0 2152199999999