ENTRY 41504 20191116 41844150400000001 SUBENT 41504001 20191116 41844150400100001 BIB 10 36 4150400100002 AUTHOR (M.A.Voskanyan,G.V.Mozolev, G.V.Muradyan, V.A.Stepanov,4150400100003 L.P.Yastrebova, B.V.Zhuravlev, L.E.Kazakov) 4150400100004 TITLE Absolute measurement of the chromium neutron capture 4150400100005 cross-section in the 1 - 20 keV energy range 4150400100006 REFERENCE (J,YK,,(4),40,1991) Main reference. 4150400100007 (R,INDC(CCP)-368,1994) Engl. translation of YK. 4150400100008 INSTITUTE (4RUSKUR) M.A.Voskanyan, G.V.Mosolev, G.V.Muradyan, 4150400100009 V.A.Stepanov, L.P.Yastrebova 4150400100010 (4RUSFEI) B.V.Zhuravlev, L.E.Kazakov 4150400100011 FACILITY (LINAC,4RUSKUR) Linac "Fakel". 4150400100012 METHOD (TOF) Resolution is 2.5 nsec/m. Flight path 25.m . 4150400100013 (GSPEC) Multiplicity spectrometry 4150400100014 DETECTOR (SPEC,NAICR) Two-layers 48-sections 4pi-detector on 4150400100015 the base of NaI(Tl) crystals. Inner layer consists of 4150400100016 16 sections with crystal of 122mmx122mmx130mm. 4150400100017 External layer - of 32 sections with crystal of 4150400100018 122mm x 122mm x 450mm. 4150400100019 Detector geometry efficiency 90%. 4150400100020 55mm thickness layer of Li-6-H and paraffin mixture 4150400100021 to protect crystals from scattered neutrons. 4150400100022 10 mm thickness B-10 layer to register neutrons, 4150400100023 passed through protecting layer, by 480 keV gammas in4150400100024 neutron capture in B-10 . 4150400100025 SAMPLE Natural Chromium of 57 mm diameter, 8.17E-03 at/barn 4150400100026 thickness. 4150400100027 Chromium,carbon and gold samples to background 4150400100028 determination. 4150400100029 6.E-04 at/barn thickness B-10 sample for neutron beam 4150400100030 measurement without B-10 layer. 4150400100031 Chromium sample with silver sample of 2.31E-04 at/barn4150400100032 thickness in Ag-109 - for additional measurement for 4150400100033 normalization purpose by Ag-109 resonance at En=5.19eV4150400100034 ERR-ANALYS (ERR-SYS,,15.) Maximal systematic error. 4150400100035 HISTORY (20080125C) Compiled at the CJD. M.M. 4150400100036 (20100404A) MM. Misprint was corrected MB -> B. 4150400100037 (20191116U) Ref. YK was corrected. 4150400100038 ENDBIB 36 0 4150400100039 NOCOMMON 0 0 4150400100040 ENDSUBENT 39 0 4150400199999 SUBENT 41504002 20191116 41844150400200001 BIB 2 5 4150400200002 REACTION (24-CR-0(N,G),,SIG,,AV) 4150400200003 STATUS (TABLE) From Table 1 of J,YK,,(4),40,1991 . 4150400200004 In article this data were defined as preliminary, but 4150400200005 were compiled as final according to comment of 4150400200006 author B.Zhuravlev. 4150400200007 ENDBIB 5 0 4150400200008 NOCOMMON 0 0 4150400200009 DATA 3 10 4150400200010 EN-MIN EN-MAX DATA 4150400200011 KEV KEV B 4150400200012 1. 2. 0.119 4150400200013 2. 3. 0.072 4150400200014 3. 4. 0.121 4150400200015 4. 5. 0.141 4150400200016 5. 6. 0.155 4150400200017 6. 7. 0.139 4150400200018 7. 8. 0.118 4150400200019 8. 9. 0.091 4150400200020 9. 10. 0.061 4150400200021 10. 20. 0.031 4150400200022 ENDDATA 12 0 4150400200023 ENDSUBENT 22 0 4150400299999 ENDENTRY 2 0 4150499999999