ENTRY            12576   20180608                             144212576  0    1 
SUBENT        12576001   20180608                             144212576  1    1 
BIB                 10         23                                 12576  1    2 
TITLE      Capture Cross-Section of Americium-241 for Pile        12576  1    3 
           Neutrons                                               12576  1    4 
AUTHOR     (G.T.Seaborg,W.M.Manning)                              12576  1    5 
REFERENCE  (R,CS-3471,4,1946)                                     12576  1    6 
INSTITUTE  (1USAANL)                                              12576  1    7 
FACILITY   (REAC,1USAORL) U-graphite reactor, X-10.               12576  1    8 
INC-SPECT  Reactor spectrum.                                      12576  1    9 
SAMPLE     1.7 microg sample of 241Am.                            12576  1   10 
PART-DET   (A)                                                    12576  1   11 
METHOD     (ACTIV) Americium sample was bombarded for five weeks  12576  1   12 
           in the Clinton pile. After bombardment the alpha       12576  1   13 
           activity of the sample was observed to consist of      12576  1   14 
           40.3% at 4.1 cm range of 241Am and 59.7% at the 4.7    12576  1   15 
           cm range of 242Cm [formed as a result of the reaction  12576  1   16 
           241Am(n,gamma)242Am(beta-)242Cm].                      12576  1   17 
HISTORY    (19760804T) Translated from SCISRS.                    12576  1   18 
           (19841004A) Converted to reaction formalism.           12576  1   19 
           (20180608A) BP: Updated to new date formats,lower      12576  1   20 
           case. Corrections according last EXFOR rules and       12576  1   21 
           Dict. and CP-D/841 Rev.=WP2014-45, clarified the       12576  1   22 
           situation with the cross section recalculation and     12576  1   23 
           added present day half lives and branching ratios for  12576  1   24 
           comparison.                                            12576  1   25 
ENDBIB              23          0                                 12576  1   26 
NOCOMMON             0          0                                 12576  1   27 
ENDSUBENT           26          0                                 12576  199999 
SUBENT        12576002   20180608                             144212576  2    1 
BIB                  5          8                                 12576  2    2 
REACTION   (95-AM-241(N,G)95-AM-242-G,,SIG,,SPA)                  12576  2    3 
ERR-ANALYS (DATA-ERR) No details on sources of uncertainties.     12576  2    4 
DECAY-DATA (95-AM-241,490.YR)                                     12576  2    5 
           (95-AM-242-G,18.HR,B-,,1.0)                            12576  2    6 
           (96-CM-242,0.4YR)                                      12576  2    7 
CORRECTION Corrected for 242Cm decay during the bombardment.      12576  2    8 
STATUS     (OUTDT,12576003)                                       12576  2    9 
           (TABLE) page 4.                                        12576  2   10 
ENDBIB               8          0                                 12576  2   11 
NOCOMMON             0          0                                 12576  2   12 
DATA                 3          1                                 12576  2   13 
EN-DUMMY   DATA       DATA-ERR                                    12576  2   14 
MEV        B          PER-CENT                                    12576  2   15 
   2.53E-08   5.60E+02        15.                                 12576  2   16 
ENDDATA              3          0                                 12576  2   17 
ENDSUBENT           16          0                                 12576  299999 
SUBENT        12576003   20180608                             144212576  3    1 
BIB                  5         15                                 12576  3    2 
REACTION   (95-AM-241(N,G)95-AM-242-G,,SIG,,SPA)                  12576  3    3 
STATUS     (DEP,12576002)                                         12576  3    4 
           (RNORM,12576002)                                       12576  3    5 
COMMENT    Cross section was recalculated by NNCSC using 1970s    12576  3    6 
           values for the half lives and branching ratios: 84%    12576  3    7 
           for 16hr Am242 beta branch to Cm242. Assumed Am241     12576  3    8 
           T1/2= 459yr and Cm242 T1/2=163d.                       12576  3    9 
           Compiler's comment: The 2018 values for 242Am          12576  3   10 
           T1/2=16.02 h, 241Am T1/2=432.6 y, and 242Cm T1/2=162.8 12576  3   11 
           days. Beta decay branching ratio of 242Am to 242Cm is  12576  3   12 
           82.7%.                                                 12576  3   13 
DECAY-DATA (95-AM-241,459.YR)                                     12576  3   14 
           (95-AM-242-G,16.HR,B-,,1.0)                            12576  3   15 
           (96-CM-242,0163.D)                                     12576  3   16 
HISTORY    (20180608A) BP: Clarified cross section recalculation. 12576  3   17 
ENDBIB              15          0                                 12576  3   18 
NOCOMMON             0          0                                 12576  3   19 
DATA                 2          1                                 12576  3   20 
EN-DUMMY   DATA                                                   12576  3   21 
MEV        B                                                      12576  3   22 
   2.53E-08   8.00E+02                                            12576  3   23 
ENDDATA              3          0                                 12576  3   24 
ENDSUBENT           23          0                                 12576  399999 
ENDENTRY             3          0                                 1257699999999