ENTRY 21786 20070718 21852178600000001 SUBENT 21786001 20070718 21852178600100001 BIB 9 22 2178600100002 INSTITUTE (2UK OXF) 2178600100003 REFERENCE (J,PRE/A,161,248,193708) 2178600100004 AUTHOR (E.T.Booth,C.Hurst) 2178600100005 TITLE -Experiments with iso-energetic neutrons-. 2178600100006 FACILITY (ACCEL) .High voltage discharge tube to accelerate 2178600100007 heavy hydrogen ions. 2178600100008 INC-SOURCE (D-D) The D(D,N) reaction. The strength of 2178600100009 the source is calculated to 2.E+7 neutrons 2178600100010 per second under the assumption that the 2178600100011 neutron emission of 1 milli-curie of radon 2178600100012 mixed with beryllium powder is 1.5e+4 neutrons 2178600100013 per second. 2178600100014 METHOD (ACTIV) Activation. 2178600100015 STATUS .Data taken from text. 2178600100016 HISTORY (19820729C) 2178600100017 (19820921E) 2178600100018 (19830418A) A.P.T. Subwork 2 corrected. 2178600100019 (19830429E) 2178600100020 (20070718A) Date is corrected to 8 digits 2178600100021 SAN 003 corrected - SM 2178600100022 . ====> Corrections have been done on behalf of 2178600100023 the NDS evaluation group 2178600100024 ENDBIB 22 0 2178600100025 NOCOMMON 0 0 2178600100026 ENDSUBENT 25 0 2178600199999 SUBENT 21786002 20070718 21852178600200001 BIB 9 21 2178600200002 REACTION (1-H-1(N,EL)1-H-1,,SIG) 2178600200003 SAMPLE .A sheet of paraffin wax , 7.7cm long, 4.8cm 2178600200004 wide and 1.85cm thick. 2178600200005 DETECTOR (GEMUC) Geiger-mueller counter to count the 2178600200006 indium foil activity. 2178600200007 .As detector was used an indium foil that was 2178600200008 enclosed between two paraffin blocks and then 2178600200009 wrapped in cadmium foil. 2178600200010 ANALYSIS .The measured intensity with and without 2178600200011 scatterer gave the mean free path of neutrons 2178600200012 in wax, which combined with the assumed value 2178600200013 for the elastic scattering of carbon gave the 2178600200014 hydrogen elastic scattering cross-section. 2178600200015 ASSUMED (ASSUM,6-C-12(N,EL)6-C-12,,SIG) 2178600200016 STATUS .Data taken from text. 2178600200017 HISTORY (19830418A) A.P.T. Assumed data added to data 2178600200018 section 2178600200019 CORRECTION .Correction for small variations in the neutron 2178600200020 source intensity was done using the P-31(N,P) 2178600200021 reaction as monitor. 2178600200022 ERR-ANALYS .No information given. 2178600200023 ENDBIB 21 0 2178600200024 NOCOMMON 0 0 2178600200025 DATA 4 1 2178600200026 EN DATA DATA-ERR ASSUM 2178600200027 MEV B B B 2178600200028 2.9 1.8 4.E-01 1.7 2178600200029 ENDDATA 3 0 2178600200030 ENDSUBENT 29 0 2178600299999 SUBENT 21786003 20070718 21852178600300001 BIB 7 17 2178600300002 REACTION (47-AG-0(N,G),,SIG) 2178600300003 SAMPLE .Silver foil of thickness 130 mg/cm2. 2178600300004 DETECTOR (GEMUC) Geiger-mueller counter, efficiency 2178600300005 calibrated with a known deposit of uranium 2178600300006 nitrate. 2178600300007 STATUS .Data taken from text. 2178600300008 CORRECTION .Internal absorption in the silver foil was 2178600300009 investigated and corrected for. 2178600300010 .Experiments concerning the effect of slow 2178600300011 energy neutrons gave the result that it was 2178600300012 not necessary to correct for this within the 2178600300013 statistical accuracy. 2178600300014 ERR-ANALYS (ERR-S) Statistical error quoted to about 7 percent. 2178600300015 (ERR-T) .Total error may be as much as 50 percent. 2178600300016 HISTORY (20070718A) Data value diminished in 10 times 2178600300017 due to recommendation of the NDS evaluation group 2178600300018 Total error added 2178600300019 ENDBIB 17 0 2178600300020 NOCOMMON 0 0 2178600300021 DATA 4 1 2178600300022 EN DATA ERR-S ERR-T 2178600300023 MEV B PER-CENT PER-CENT 2178600300024 2.5 7.4E-01 7. 5.E+01 2178600300025 ENDDATA 3 0 2178600300026 ENDSUBENT 25 0 2178600399999 ENDENTRY 3 0 2178699999999