ENTRY 21183 20180429 22702118300000001 SUBENT 21183001 20180429 22702118300100001 BIB 15 36 2118300100002 INSTITUTE (2UK HAR) 2118300100003 REFERENCE (J,JNE,3,70(1),1956) 2118300100004 (R,AERE-NP/R-1894,1958) - details of experim.; data 2118300100005 AUTHOR (S.J.Cocking,J.F.Raffle) 2118300100006 TITLE The thermal capture cross-section of sodium 2118300100007 FACILITY (REAC,2UK HAR) BEPO reactor at AERE. 2118300100008 INC-SOURCE (THCOL) Reactor thermal column. 2118300100009 SAMPLE Pure dried sodium carbonate weighed into small mg/Al 2118300100010 alloy capsule in the form of a cylinder and piston. 2118300100011 Bottom of piston 0.012 inch thick, sample 0.015 inch 2118300100012 thick. 2118300100013 .Thin gold foils of thickness about 2118300100014 8.mm x 8.mm x 10 mg/cm2 fixed onto capsule above and 2118300100015 below the carbonate layer. 2118300100016 .Sample mounted on thin Al plate between the detectors 2118300100017 such that the betas penetrated the 0.012 inch window. 2118300100018 METHOD (COINC) Beta-gamma coincidence. 2118300100019 DETECTOR (COIN,SCIN,NAICR) Coincidence system consisting of 2118300100020 stilbene scintillator to detect betas and 2118300100021 NaI crystal to detect gammas. Stilbene 2118300100022 scintillator biased to exclude internal 2118300100023 conversion electrons and low energy betas 2118300100024 from secondary decay in gold. 2118300100025 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) Gold cross-section taken2118300100026 98.6 b at 2200 m/sec. 2118300100027 DECAY-MON (79-AU-198-G,2.697D) 2118300100028 PART-DET (B) Decay betas. 2118300100029 (DG) Decay gammas. 2118300100030 CORRECTION .Correction for small background from impurities in 2118300100031 the Mg/Be capsule, and for departure of Au from 1/v 2118300100032 absorber assuming a Maxwellian spectrum. 2118300100033 ERR-ANALYS (DATA-ERR) No information about source of uncertainties2118300100034 HISTORY (19791116T) from NEUDADA 2118300100035 (19860404U) BIB update 2118300100036 (20180429U) SD:Updated to new date formats,lower case. 2118300100037 Ref. corrected (JNE,4,33 -> JNE,3,70(1)). 2118300100038 ENDBIB 36 0 2118300100039 COMMON 1 3 2118300100040 MONIT 2118300100041 B 2118300100042 9.8600E+01 2118300100043 ENDCOMMON 3 0 2118300100044 ENDSUBENT 43 0 2118300199999 SUBENT 21183002 20180429 22702118300200001 BIB 4 5 2118300200002 REACTION (11-NA-23(N,G)11-NA-24,,SIG) 2118300200003 DECAY-DATA (11-NA-24,14.9HR,B) 2118300200004 STATUS (TABLE) Data from the text of J.Nucl.Ener.3(1956)70(1).2118300200005 Same value is given in AERE-NP/R-1894,1958 2118300200006 HISTORY (19860228A) N.Ch 2118300200007 ENDBIB 5 0 2118300200008 NOCOMMON 0 0 2118300200009 DATA 3 1 2118300200010 EN DATA DATA-ERR 2118300200011 EV B B 2118300200012 2.53E-02 5.36E-01 6.0E-03 2118300200013 ENDDATA 3 0 2118300200014 ENDSUBENT 13 0 2118300299999 ENDENTRY 2 0 2118399999999