ENTRY            23518   20190604                             22802351800000001 
SUBENT        23518001   20190604                             22802351800100001 
BIB                  9         23                                 2351800100002 
TITLE       Neutrons from the spontaneous fission of thorium      2351800100003 
AUTHOR     (F.R.Barclay,W.Galbraith,W.J.Whitehouse)               2351800100004 
REFERENCE  (J,PPS/A,65,73,1952)                                   2351800100005 
INSTITUTE  (2UK HAR)                                              2351800100006 
SAMPLE      Metal samples: U - 33.6 kg, Th 23.8 kg.               2351800100007 
DETECTOR   (BF3) Eight proportional counters filled  with B-10F(3)2351800100008 
           embedded symmetrically in the wax around axis of hole. 2351800100009 
           . Absolute intensity of the arrangement for neutron    2351800100010 
           detection from calibrated Ra-Be source was ~ 1. % .    2351800100011 
METHOD      Cube (70cm side) of paraffin wax with central         2351800100012 
           cylindrical hole was used. Cd cylinder was placed in   2351800100013 
           the center hole to eliminate any effects caused by slow2351800100014 
           neutrons induced fission.                              2351800100015 
                                           U         Th           2351800100016 
           Total counts                   4567       1219         2351800100017 
           Time,min                       15         505          2351800100018 
           Background counts                    460               2351800100019 
           Background counting time, min        460               2351800100020 
           True counts/min                303+-4.5   1.42+-0.09   2351800100021 
           Count/kg of metal              9.03+-0.13 0.060+-0.004 2351800100022 
ANALYSIS   Energy spectra of spontaneous fission of two nuclides  2351800100023 
           U and Th were assumed as approximately the same.       2351800100024 
HISTORY    (20190604C)  M.M.                                      2351800100025 
ENDBIB              23          0                                 2351800100026 
NOCOMMON             0          0                                 2351800100027 
ENDSUBENT           26          0                                 2351800199999 
SUBENT        23518002   20190604                             22802351800200001 
BIB                  4          6                                 2351800200002 
REACTION   ((90-TH-232(0,F),,NU)/(92-U-0(0,F),,NU))               2351800200003 
REL-REF    (D,,H.Pose,J,ZP,121,293,1943) Nu for Th - 5-6 prt/fis. 2351800200004 
ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 2351800200005 
           article.                                               2351800200006 
STATUS     (TABLE) Text on page 73 of                             2351800200007 
           Proc.Phys.Soc.,v.A64,p.73,1952                         2351800200008 
ENDBIB               6          0                                 2351800200009 
NOCOMMON             0          0                                 2351800200010 
DATA                 2          1                                 2351800200011 
DATA       DATA-ERR                                               2351800200012 
NO-DIM     NO-DIM                                                 2351800200013 
 1.07       0.10                                                  2351800200014 
ENDDATA              3          0                                 2351800200015 
ENDSUBENT           14          0                                 2351800299999 
ENDENTRY             2          0                                 2351899999999