ENTRY 23528 20190603 22802352800000001 SUBENT 23528001 20190603 22802352800100001 BIB 10 18 2352800100002 TITLE A measurement in GLEEP of the thermal neutron 2352800100003 absorption cross-section of a sample of highly purified2352800100004 silicon 2352800100005 AUTHOR (R.J.Maddison, P.M.V.Jones) 2352800100006 REFERENCE (R,AEEW-M-887,1969) 2352800100007 INSTITUTE (2UK WIN) R.J.Maddison 2352800100008 (2UK HAR) P.M.V.Jones 2352800100009 FACILITY (OSCIP,2UK HAR) GLEEP oscillator at AERE Harwell. 2352800100010 INC-SPECT Thermal neutrons. GLEEP neutron temperature ~70 deg C .2352800100011 SAMPLE .Natural Si. Weight 201.42 g. In Al container of 2352800100012 18.0 cm long, 5.5 cm diameter, 48.63 g weight. 2352800100013 Si-28 - 92.27%, Si-29 - 4.68%, Si-30 - 3.05%. 2352800100014 . Al standard of 20.3 cm long, 2.5 cm diameter, 2352800100015 1.34+-0.015 cm2 cross-section, 263.9 g weight. 2352800100016 DETECTOR No information in the article. 2352800100017 METHOD Three measurements of sample in its holder and 2352800100018 of the holder alone. 2352800100019 HISTORY (20190604C) M.M. 2352800100020 ENDBIB 18 0 2352800100021 NOCOMMON 0 0 2352800100022 ENDSUBENT 21 0 2352800199999 SUBENT 23528002 20190604 22802352800200001 BIB 7 24 2352800200002 REACTION (14-SI-0(N,ABS),,SIG,,MXW) 2352800200003 DECAY-DATA No information in the article. 2352800200004 REL-REF (R,,M.C.Moxon,W,MOXON,1969) 2352800200005 Si res.integral used for correction 2352800200006 (R,,E.J.Axton,J,JNE/AB,17,125,1963) 2352800200007 Si scattering cross-section used for scattering 2352800200008 correction 2352800200009 ASSUMED (ASSUM1,14-SI-0(N,ABS),,RI) 0.010 +0.051 -0.0025 barn 2352800200010 (ASSUM2,14-SI-0(N,SCT)14-SI-0,,SIG) 2.1 barn 2352800200011 CORRECTION . Self-shielding correction + 0.0017-0.0005 barn. 2352800200012 . Resonance contribution correction ( deviation from 2352800200013 Maxwellian spectrum and resonance absorption in the 2352800200014 sample, Si resonance integral 0.010 +0.051 -0.0025 2352800200015 barn was used) -0.0004+-0.0003 barn. 2352800200016 . Neutron scattering correction +0.0012+-0.003 barn. 2352800200017 . Nitrogen displacement correction +0.0014+-0.0004 barn2352800200018 . Sample shape correction is not needed (Si and Al 2352800200019 samples are comparable in size). 2352800200020 Value before these correction 0.1722+-0.0044 barn. 2352800200021 ERR-ANALYS (DATA-ERR) Includes contributions from statistical 2352800200022 errors, from the oscillator standardization, from 2352800200023 derivation of the net correction of 0.004 barn . 2352800200024 STATUS (TABLE) Abstract and text on page 3 of 2352800200025 rep.AEEW-M-887,1969 2352800200026 ENDBIB 24 0 2352800200027 NOCOMMON 0 0 2352800200028 DATA 5 1 2352800200029 EN-DUMMY DATA DATA-ERR ASSUM1 ASSUM2 2352800200030 EV B B B B 2352800200031 0.0253 0.176 0.005 0.010 2.1 2352800200032 ENDDATA 3 0 2352800200033 ENDSUBENT 32 0 2352800299999 ENDENTRY 2 0 2352899999999