ENTRY 41648 20180128 41774164800000001 SUBENT 41648001 20180128 41774164800100001 BIB 13 25 4164800100002 TITLE Measurement of the effective cross-sections of neutron4164800100003 absorption in the middle energy range. 4164800100004 AUTHOR (Yu.A.Prokhorov) 4164800100005 INSTITUTE (4RUSFEI) 4164800100006 REFERENCE (T,PROKHOROV,1956) 4164800100007 REL-REF (O,41626001,Yu.A.Prokhorov,T,PROKHOROV,1956) 4164800100008 Resonance integrals measured. 4164800100009 FACILITY (REAC,4RUSFEI) PF-K reactor. 4164800100010 INC-SOURCE (THCOL) Heavy water thermal column in PF-K reactor. 4164800100011 INC-SPECT Thermal spectrum of Fermi shape, could be described 4164800100012 approximately as F(E)dE ~= dE/E**1.05. 4164800100013 Cadmium ratio was measured by U-235 ionization chamber4164800100014 to be 32.0 at the center of the thermal column. 4164800100015 SAMPLE Li(2)CO(3) with graphite powder. For normalization. 4164800100016 Thickness, mg Li/cm3 - 9.5, 9.6, 9.2, 9.1, 22.9 4164800100017 METHOD (ACTIV) Cyclic activation. One cycle time 80 sec. 4164800100018 Reactor reactivity was measured with and without Cd 4164800100019 (0.25 mm thickness) for several samples. 4164800100020 DETECTOR (IOCH) Ionization boron chamber KNT-52 in paraffin 4164800100021 block of 100 mm diameter. Filled with Ar. 4164800100022 Sensitivity 1.45E-14 a.cm2sec/neutron for thermal 4164800100023 neutrons. 4164800100024 Detection efficiency ~1.E-4 . 4164800100025 MONITOR Normalization was done by measurements by Li and C . 4164800100026 HISTORY (20180128C) M.M. 4164800100027 ENDBIB 25 0 4164800100028 COMMON 1 3 4164800100029 EN-DUMMY 4164800100030 EV 4164800100031 0.0253 4164800100032 ENDCOMMON 3 0 4164800100033 ENDSUBENT 32 0 4164800199999 SUBENT 41648002 20180128 41774164800200001 BIB 6 11 4164800200002 REACTION (1-H-WTR(N,G),,SIG,,MXW) 4164800200003 Thermal neutron absorption cross section 4164800200004 SAMPLE Weight 4.86 gram. Thickness 1.0 cm (diameter). 4164800200005 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800200006 Value 0.66+-0.01 barn 4164800200007 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800200008 fluctuation, fluctuation of induced activity 4164800200009 measurement sensitivity. 4164800200010 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800200011 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800200012 comment of N.Otsuka ( NDS,IAEA). 4164800200013 ENDBIB 11 0 4164800200014 NOCOMMON 0 0 4164800200015 DATA 2 1 4164800200016 DATA DATA-ERR 4164800200017 B B 4164800200018 0.82 0.05 4164800200019 ENDDATA 3 0 4164800200020 ENDSUBENT 19 0 4164800299999 SUBENT 41648003 20180128 41774164800300001 BIB 6 11 4164800300002 REACTION (4-BE-9(N,G)4-BE-10,,SIG,,MXW) 4164800300003 Thermal neutron absorption cross section 4164800300004 SAMPLE BeO powder, weight 6.143 gram. Thickness 0.23 cm . 4164800300005 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800300006 Value 0.010+-0.001 barn 4164800300007 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800300008 fluctuation, fluctuation of induced activity 4164800300009 measurement sensitivity. 4164800300010 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800300011 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800300012 comment of N.Otsuka ( NDS,IAEA). 4164800300013 ENDBIB 11 0 4164800300014 NOCOMMON 0 0 4164800300015 DATA 2 1 4164800300016 DATA DATA-ERR 4164800300017 B B 4164800300018 0.018 0.010 4164800300019 ENDDATA 3 0 4164800300020 ENDSUBENT 19 0 4164800399999 SUBENT 41648004 20180128 41774164800400001 BIB 6 13 4164800400002 REACTION (6-C-0(N,G),,SIG,,MXW) 4164800400003 Thermal neutron absorption cross section 4164800400004 SAMPLE Graphite powder, weight 5.405 gram, thickness 0.42 cm .4164800400005 Graphite brick, density 1.65, weight 7.37 gram, 4164800400006 thickness 0.95 cm . 4164800400007 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800400008 Value 0.032+-0.002 barn 4164800400009 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800400010 fluctuation, fluctuation of induced activity 4164800400011 measurement sensitivity. 4164800400012 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800400013 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800400014 comment of N.Otsuka ( NDS,IAEA). 4164800400015 ENDBIB 13 0 4164800400016 NOCOMMON 0 0 4164800400017 DATA 2 1 4164800400018 DATA DATA-ERR 4164800400019 B B 4164800400020 0.044 0.010 4164800400021 ENDDATA 3 0 4164800400022 ENDSUBENT 21 0 4164800499999 SUBENT 41648005 20180128 41774164800500001 BIB 6 11 4164800500002 REACTION (12-MG-0(N,G),,SIG,,MXW) 4164800500003 Thermal neutron absorption cross section 4164800500004 SAMPLE Mg sample of 0.90cm thickness. 4164800500005 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800500006 Value 0.063+-0.004 barn 4164800500007 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800500008 fluctuation, fluctuation of induced activity 4164800500009 measurement sensitivity. 4164800500010 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800500011 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800500012 comment of N.Otsuka ( NDS,IAEA). 4164800500013 ENDBIB 11 0 4164800500014 NOCOMMON 0 0 4164800500015 DATA 2 1 4164800500016 DATA DATA-ERR 4164800500017 B B 4164800500018 0.062 0.007 4164800500019 ENDDATA 3 0 4164800500020 ENDSUBENT 19 0 4164800599999 SUBENT 41648006 20180128 41774164800600001 BIB 6 11 4164800600002 REACTION (24-CR-0(N,G),,SIG,,MXW) 4164800600003 Thermal neutron absorption cross section 4164800600004 SAMPLE Cr powder sample of 14.153g weight, 0.23 cm thickness.4164800600005 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800600006 Value 2.9+-0.2 barn 4164800600007 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800600008 fluctuation, fluctuation of induced activity 4164800600009 measurement sensitivity. 4164800600010 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800600011 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800600012 comment of N.Otsuka ( NDS,IAEA). 4164800600013 ENDBIB 11 0 4164800600014 NOCOMMON 0 0 3 4164800600015 DATA 2 1 4164800600016 DATA DATA-ERR 4164800600017 B B 4164800600018 3.2 0.1 4164800600019 ENDDATA 3 0 4164800600020 ENDSUBENT 19 0 4164800699999 SUBENT 41648007 20180128 41774164800700001 BIB 6 12 4164800700002 REACTION (26-FE-0(N,G),,SIG,,MXW) 4164800700003 Thermal neutron absorption cross section 4164800700004 SAMPLE Fe powder sample of 16.94 g weight, 0.24 cm thickness.4164800700005 Fe solid sample of 31.20g weight,0.90cm thickness. 4164800700006 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800700007 Value 2.53+-0.06 barn 4164800700008 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800700009 fluctuation, fluctuation of induced activity 4164800700010 measurement sensitivity. 4164800700011 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800700012 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800700013 comment of N.Otsuka ( NDS,IAEA). 4164800700014 ENDBIB 12 0 4164800700015 NOCOMMON 0 0 3 4164800700016 DATA 2 1 4164800700017 DATA DATA-ERR 4164800700018 B B 4164800700019 2.6 0.1 4164800700020 ENDDATA 3 0 4164800700021 ENDSUBENT 20 0 4164800799999 SUBENT 41648008 20180128 41774164800800001 BIB 6 13 4164800800002 REACTION (28-NI-0(N,G),,SIG,,MXW) 4164800800003 Thermal neutron absorption cross section 4164800800004 SAMPLE Ni foil as hollow cylinder of 4164800800005 weight 3.78g, 4.62g, 7.12g, 12.43g , 4164800800006 thickness 0.004cm, 0.006cm, 0.096cm, 0.196cm 4164800800007 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800800008 Value 4.6+-0.2 barn 4164800800009 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800800010 fluctuation, fluctuation of induced activity 4164800800011 measurement sensitivity. 4164800800012 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800800013 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800800014 comment of N.Otsuka ( NDS,IAEA). 4164800800015 ENDBIB 13 0 4164800800016 NOCOMMON 0 0 3 4164800800017 DATA 2 1 4164800800018 DATA DATA-ERR 4164800800019 B B 4164800800020 4.5 0.1 4164800800021 ENDDATA 3 0 4164800800022 ENDSUBENT 21 0 4164800899999 SUBENT 41648009 20180128 41774164800900001 BIB 6 12 4164800900002 REACTION (29-CU-0(N,G),,SIG,,MXW) 4164800900003 Thermal neutron absorption cross section 4164800900004 SAMPLE Cu foils of weights 3.61g , 10.67g , 14.84g , 4164800900005 thickness 0.04cm, 0.14cm, 0.18cm 4164800900006 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164800900007 Value 3.7+-0.1 barn 4164800900008 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164800900009 fluctuation, fluctuation of induced activity 4164800900010 measurement sensitivity. 4164800900011 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164800900012 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164800900013 comment of N.Otsuka ( NDS,IAEA). 4164800900014 ENDBIB 12 0 4164800900015 NOCOMMON 0 0 3 4164800900016 DATA 2 1 4164800900017 DATA DATA-ERR 4164800900018 B B 4164800900019 3.8 0.1 4164800900020 ENDDATA 3 0 4164800900021 ENDSUBENT 20 0 4164800999999 SUBENT 41648010 20180128 41774164801000001 BIB 6 13 4164801000002 REACTION (42-MO-0(N,G),,SIG,,MXW) 4164801000003 Thermal neutron absorption cross section 4164801000004 SAMPLE Mo foils as hollow cylinder of 4164801000005 weights 2.27g, 4.57g, 6.68g, 8.18g, 4164801000006 thickness 0.024cm, 0.048cm, 0.072cm, 0.096cm 4164801000007 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164801000008 Value 2.5+-0.2 barn 4164801000009 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164801000010 fluctuation, fluctuation of induced activity 4164801000011 measurement sensitivity. 4164801000012 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164801000013 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164801000014 comment of N.Otsuka ( NDS,IAEA). 4164801000015 ENDBIB 13 0 4164801000016 NOCOMMON 0 0 3 4164801000017 DATA 2 1 4164801000018 DATA DATA-ERR 4164801000019 B B 4164801000020 2.7 0.1 4164801000021 ENDDATA 3 0 4164801000022 ENDSUBENT 21 0 4164801099999 SUBENT 41648011 20180128 41774164801100001 BIB 6 15 4164801100002 REACTION (73-TA-0(N,G),,SIG,,MXW) 4164801100003 Thermal neutron absorption cross section 4164801100004 SAMPLE Flat samples: 4164801100005 Weight,g 0.558 1.06 4164801100006 Thickness,cm 0.006 0.012 4164801100007 Hollow cylinder from foil: 4164801100008 weight 1.81g, thickness 0.024 cm . 4164801100009 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164801100010 Value 21.3+-1.0 barn 4164801100011 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164801100012 fluctuation, fluctuation of induced activity 4164801100013 measurement sensitivity. 4164801100014 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164801100015 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164801100016 comment of N.Otsuka ( NDS,IAEA). 4164801100017 ENDBIB 15 0 4164801100018 NOCOMMON 0 0 3 4164801100019 DATA 2 1 4164801100020 DATA DATA-ERR 4164801100021 B B 4164801100022 22.8 1.0 4164801100023 ENDDATA 3 0 4164801100024 ENDSUBENT 23 0 4164801199999 SUBENT 41648012 20180128 41774164801200001 BIB 6 12 4164801200002 REACTION (74-W-0(N,G),,SIG,,MXW) 4164801200003 Thermal neutron absorption cross section 4164801200004 SAMPLE Flat sample of weight 1.01g, thickness 0.008cm . 4164801200005 Cylinder sample of weight 5.10g, thickness 0.032cm . 4164801200006 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164801200007 Value 19.2+-1.0 barn 4164801200008 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164801200009 fluctuation, fluctuation of induced activity 4164801200010 measurement sensitivity. 4164801200011 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164801200012 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164801200013 comment of N.Otsuka ( NDS,IAEA). 4164801200014 ENDBIB 12 0 4164801200015 NOCOMMON 0 0 3 4164801200016 DATA 2 1 4164801200017 DATA DATA-ERR 4164801200018 B B 4164801200019 19.4 0.7 4164801200020 ENDDATA 3 0 4164801200021 ENDSUBENT 20 0 4164801299999 SUBENT 41648013 20180128 41774164801300001 BIB 6 11 4164801300002 REACTION (82-PB-0(N,G),,SIG,,MXW) 4164801300003 Thermal neutron absorption cross section 4164801300004 SAMPLE Solid sample of 49.37g weight, 0.92cm thickness. 4164801300005 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164801300006 Value 0.17+-0.01 barn 4164801300007 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164801300008 fluctuation, fluctuation of induced activity 4164801300009 measurement sensitivity. 4164801300010 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164801300011 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164801300012 comment of N.Otsuka ( NDS,IAEA). 4164801300013 ENDBIB 11 0 4164801300014 NOCOMMON 0 0 3 4164801300015 DATA 2 1 4164801300016 DATA DATA-ERR 4164801300017 B B 4164801300018 0.17 0.01 4164801300019 ENDDATA 3 0 4164801300020 ENDSUBENT 19 0 4164801399999 SUBENT 41648014 20180128 41774164801400001 BIB 5 8 4164801400002 REACTION (83-BI-209(N,G)83-BI-210,,SIG,,MXW) 4164801400003 Thermal neutron absorption cross section 4164801400004 SAMPLE Powder sample of 33.16g weight, 0.44 cm thickness. 4164801400005 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164801400006 Value 0.032+-0.002 barn 4164801400007 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164801400008 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164801400009 comment of N.Otsuka ( NDS,IAEA). 4164801400010 ENDBIB 8 0 4164801400011 NOCOMMON 0 0 3 4164801400012 DATA 1 1 4164801400013 DATA-APRX 4164801400014 B 4164801400015 0.01 4164801400016 ENDDATA 3 0 4164801400017 ENDSUBENT 16 0 4164801499999 SUBENT 41648015 20180128 41774164801500001 BIB 3 5 4164801500002 REACTION (92-U-235(N,ABS),,SIG,,MXW) 4164801500003 Thermal neutron absorption cross section 4164801500004 SAMPLE Thickness 16.4 mg/cm2 , weight 0.257 g . 4164801500005 (92-U-235,ENR=0.75) On Ni foil . 4164801500006 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 4164801500007 ENDBIB 5 0 4164801500008 NOCOMMON 0 0 3 4164801500009 DATA 1 1 4164801500010 DATA 4164801500011 B 4164801500012 625. 4164801500013 ENDDATA 3 0 4164801500014 ENDSUBENT 13 0 4164801599999 SUBENT 41648016 20180128 41774164801600001 BIB 6 18 4164801600002 REACTION 1(26-FE-CMP(N,G),,SIG,,MXW) 4164801600003 2(26-FE-CMP(N,G),,SIG,,MXW) 4164801600004 Thermal neutron absorption cross section 4164801600005 SAMPLE 1 Stainless steel EYaIT 4164801600006 2 Stainless steel EI-211 4164801600007 Hollow cylinder 4164801600008 weight,gram 5.60, 9.88, 13.77, 16.19, 19.00, 21.18 4164801600009 thickness,cm 0.08, 0.16, 0.24, 0.30, 0.38, 0.44 4164801600010 Solid sample of weight 30.94g,32.29g, 4164801600011 thickness 0.90cm of both. 4164801600012 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 4164801600013 Value 2.53+-0.06 barn 4164801600014 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 4164801600015 fluctuation, fluctuation of induced activity 4164801600016 measurement sensitivity. 4164801600017 STATUS (TABLE) Table 1 of T,PROKHOROV 4164801600018 HISTORY (20180128A) N,ABS -> N,G corrected according to a 4164801600019 comment of N.Otsuka ( NDS,IAEA). 4164801600020 ENDBIB 18 0 4164801600021 NOCOMMON 0 0 3 4164801600022 DATA 4 1 4164801600023 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 4164801600024 B B B B 4164801600025 2.9 0.1 2.9 0.1 4164801600026 ENDDATA 3 0 4164801600027 ENDSUBENT 26 0 4164801699999 ENDENTRY 16 0 4164899999999