ENTRY 23528 20190604 228023528 0 1 SUBENT 23528001 20190603 228023528 1 1 BIB 10 18 23528 1 2 TITLE A measurement in GLEEP of the thermal neutron 23528 1 3 absorption cross-section of a sample of highly purified23528 1 4 silicon 23528 1 5 AUTHOR (R.J.Maddison, P.M.V.Jones) 23528 1 6 REFERENCE (R,AEEW-M-887,1969) 23528 1 7 INSTITUTE (2UK WIN) R.J.Maddison 23528 1 8 (2UK HAR) P.M.V.Jones 23528 1 9 FACILITY (OSCIP,2UK HAR) GLEEP oscillator at AERE Harwell. 23528 1 10 INC-SPECT Thermal neutrons. GLEEP neutron temperature ~70 deg C .23528 1 11 SAMPLE .Natural Si. Weight 201.42 g. In Al container of 23528 1 12 18.0 cm long, 5.5 cm diameter, 48.63 g weight. 23528 1 13 Si-28 - 92.27%, Si-29 - 4.68%, Si-30 - 3.05%. 23528 1 14 . Al standard of 20.3 cm long, 2.5 cm diameter, 23528 1 15 1.34+-0.015 cm2 cross-section, 263.9 g weight. 23528 1 16 DETECTOR No information in the article. 23528 1 17 METHOD Three measurements of sample in its holder and 23528 1 18 of the holder alone. 23528 1 19 HISTORY (20190604C) M.M. 23528 1 20 ENDBIB 18 0 23528 1 21 NOCOMMON 0 0 23528 1 22 ENDSUBENT 21 0 23528 199999 SUBENT 23528002 20190604 228023528 2 1 BIB 7 24 23528 2 2 REACTION (14-SI-0(N,ABS),,SIG,,MXW) 23528 2 3 DECAY-DATA No information in the article. 23528 2 4 REL-REF (R,,M.C.Moxon,W,MOXON,1969) 23528 2 5 Si res.integral used for correction 23528 2 6 (R,,E.J.Axton,J,JNE/AB,17,125,1963) 23528 2 7 Si scattering cross-section used for scattering 23528 2 8 correction 23528 2 9 ASSUMED (ASSUM1,14-SI-0(N,ABS),,RI) 0.010 +0.051 -0.0025 barn 23528 2 10 (ASSUM2,14-SI-0(N,SCT)14-SI-0,,SIG) 2.1 barn 23528 2 11 CORRECTION . Self-shielding correction + 0.0017-0.0005 barn. 23528 2 12 . Resonance contribution correction ( deviation from 23528 2 13 Maxwellian spectrum and resonance absorption in the 23528 2 14 sample, Si resonance integral 0.010 +0.051 -0.0025 23528 2 15 barn was used) -0.0004+-0.0003 barn. 23528 2 16 . Neutron scattering correction +0.0012+-0.003 barn. 23528 2 17 . Nitrogen displacement correction +0.0014+-0.0004 barn23528 2 18 . Sample shape correction is not needed (Si and Al 23528 2 19 samples are comparable in size). 23528 2 20 Value before these correction 0.1722+-0.0044 barn. 23528 2 21 ERR-ANALYS (DATA-ERR) Includes contributions from statistical 23528 2 22 errors, from the oscillator standardization, from 23528 2 23 derivation of the net correction of 0.004 barn . 23528 2 24 STATUS (TABLE) Abstract and text on page 3 of 23528 2 25 rep.AEEW-M-887,1969 23528 2 26 ENDBIB 24 0 23528 2 27 NOCOMMON 0 0 23528 2 28 DATA 5 1 23528 2 29 EN-DUMMY DATA DATA-ERR ASSUM1 ASSUM2 23528 2 30 EV B B B B 23528 2 31 0.0253 0.176 0.005 0.010 2.1 23528 2 32 ENDDATA 3 0 23528 2 33 ENDSUBENT 32 0 23528 299999 ENDENTRY 2 0 2352899999999