ENTRY 41583 20120228 41564158300000001 SUBENT 41583001 20120228 41564158300100001 BIB 12 28 4158300100002 TITLE Radiative capture of He-3 neutrons in the energy 4158300100003 interval 1-70 keV. 4158300100004 AUTHOR (V.P.Alfimenkov, S.B.Borzakov, J.Wierzbicki, 4158300100005 O.N.Ovchinnikov, L.B.Pikel'ner, E.I.Sharapov) 4158300100006 INSTITUTE (4ZZZDUB) 4158300100007 REFERENCE (J,ZEP,29,(1),100,197901) 4158300100008 (J,JEL,29,(1),91,1970) Engl.translation of ZEP,29,100 .4158300100009 REL-REF (N,11169001,R.W.Zurmuehle+,J,PR,132,751,1963) 4158300100010 Detector efficiency calculation. 4158300100011 MONITOR Neutron beam intensity was measured by calibrated boron4158300100012 and helium counters. 4158300100013 METHOD (TOF) Flight base is 33.2 m . 4158300100014 FACILITY (REAC) Fast pulse reactor IBR-30 in booster regime 4158300100015 concurrently with LUE-40 linear electron accelerator. 4158300100016 SAMPLE Liquid He-3 in container. Target area 30 cm**2, 4158300100017 thickness 3E+22 nuclei/cm**2 . 4158300100018 DETECTOR (NAICR) Na-I(Tl) crystal of 10 cm diameter, 10 cm 4158300100019 thickness, placed at 90 and 45 degrees angles relative 4158300100020 to beam. Screen of 10 cm paraffin, 4 cm boron carbide, 4158300100021 1 cm lead was placed between target and detector. 4158300100022 Detector efficiency was calculated, correctness was 4158300100023 checked (see REL-REF of R.W.Zurmuhle+) and was 4158300100024 reconfirmed in calibrated measurements of the known 4158300100025 partial width of direct transition ( 9.0 MeV ) for 4158300100026 neutron capture in nickel. 4158300100027 CORRECTION For attenuation of gamma-rays by the screen. 4158300100028 For contribution of faster neutrons. 4158300100029 HISTORY (20120228C) 4158300100030 ENDBIB 28 0 4158300100031 COMMON 1 3 4158300100032 ERR-S 4158300100033 PER-CENT 4158300100034 15. 4158300100035 ENDCOMMON 3 0 4158300100036 ENDSUBENT 35 0 4158300199999 SUBENT 41583002 20120228 41564158300200001 BIB 5 15 4158300200002 REACTION (2-HE-3(N,G)2-HE-4,,SIG,,FCT) See ANALYSIS 4158300200003 ANALYSIS Radiative capture cross section was determined as: 4158300200004 (8/3)*PI*SIG(90deg), which is suitable for the case of4158300200005 angular distribution corresponding to the function 4158300200006 SIN**2 .This dependence was indicated by measured 4158300200007 relationship of gamma-ray intensities at 90 and 45 deg.4158300200008 angles equal to 1.8+-0.20. 4158300200009 MISC-COL (MISC) Average energy in energy interval, digitized. 4158300200010 ERR-ANALYS (DATA-ERR) Digitized error bars of DATA. 4158300200011 Calibration uncertainty of detector efficiency 4158300200012 constitutes the basic error in determining the cross 4158300200013 section. 4158300200014 (EN-ERR) Digitized error bars of EN 4158300200015 STATUS (CURVE) Fig.2 of ZEP,29,(1),100,1979. 4158300200016 (DEP,41583003) Ratio of gamma-ray intensities. 4158300200017 ENDBIB 15 0 4158300200018 COMMON 2 3 4158300200019 EN-ERR-DIG ERR-DIG 4158300200020 PER-CENT MICRO-B 4158300200021 0.791E-02 0.63E-01 4158300200022 ENDCOMMON 3 0 4158300200023 DATA 5 5 4158300200024 EN-MIN EN-MAX DATA DATA-ERR MISC 4158300200025 KEV KEV MICRO-B MICRO-B KEV 4158300200026 1.02 2.38 7.98 7.09 1.70 4158300200027 2.38 9.15 10.14 3.80 5.75 4158300200028 9.15 19.98 15.72 4.68 14.60 4158300200029 19.98 33.82 14.21 3.67 26.75 4158300200030 33.82 68.89 18.26 4.30 50.62 4158300200031 ENDDATA 7 0 4158300200032 ENDSUBENT 31 0 4158300299999 SUBENT 41583003 20120228 41564158300300001 BIB 3 3 4158300300002 REACTION (2-HE-3(N,G)2-HE-4,,DA,,RSD/AV) 4158300300003 ERR-ANALYS (DATA-ERR) Not specified. 4158300300004 STATUS (TABLE) Text of ZEP,29,(1),100,1979. 4158300300005 ENDBIB 3 0 4158300300006 COMMON 1 3 4158300300007 ANG 4158300300008 ADEG 4158300300009 45. 4158300300010 ENDCOMMON 3 0 4158300300011 DATA 4 1 4158300300012 EN-MIN EN-MAX DATA DATA-ERR 4158300300013 KEV KEV NO-DIM NO-DIM 4158300300014 1.0 69. 1.8 0.20 4158300300015 ENDDATA 3 0 4158300300016 ENDSUBENT 15 0 4158300399999 ENDENTRY 3 0 4158399999999