ENTRY 41648 20180128 417741648 0 1 SUBENT 41648001 20180128 417741648 1 1 BIB 13 25 41648 1 2 TITLE Measurement of the effective cross-sections of neutron41648 1 3 absorption in the middle energy range. 41648 1 4 AUTHOR (Yu.A.Prokhorov) 41648 1 5 INSTITUTE (4RUSFEI) 41648 1 6 REFERENCE (T,PROKHOROV,1956) 41648 1 7 REL-REF (O,41626001,Yu.A.Prokhorov,T,PROKHOROV,1956) 41648 1 8 Resonance integrals measured. 41648 1 9 FACILITY (REAC,4RUSFEI) PF-K reactor. 41648 1 10 INC-SOURCE (THCOL) Heavy water thermal column in PF-K reactor. 41648 1 11 INC-SPECT Thermal spectrum of Fermi shape, could be described 41648 1 12 approximately as F(E)dE ~= dE/E**1.05. 41648 1 13 Cadmium ratio was measured by U-235 ionization chamber41648 1 14 to be 32.0 at the center of the thermal column. 41648 1 15 SAMPLE Li(2)CO(3) with graphite powder. For normalization. 41648 1 16 Thickness, mg Li/cm3 - 9.5, 9.6, 9.2, 9.1, 22.9 41648 1 17 METHOD (ACTIV) Cyclic activation. One cycle time 80 sec. 41648 1 18 Reactor reactivity was measured with and without Cd 41648 1 19 (0.25 mm thickness) for several samples. 41648 1 20 DETECTOR (IOCH) Ionization boron chamber KNT-52 in paraffin 41648 1 21 block of 100 mm diameter. Filled with Ar. 41648 1 22 Sensitivity 1.45E-14 a.cm2sec/neutron for thermal 41648 1 23 neutrons. 41648 1 24 Detection efficiency ~1.E-4 . 41648 1 25 MONITOR Normalization was done by measurements by Li and C . 41648 1 26 HISTORY (20180128C) M.M. 41648 1 27 ENDBIB 25 0 41648 1 28 COMMON 1 3 41648 1 29 EN-DUMMY 41648 1 30 EV 41648 1 31 0.0253 41648 1 32 ENDCOMMON 3 0 41648 1 33 ENDSUBENT 32 0 41648 199999 SUBENT 41648002 20180128 417741648 2 1 BIB 6 11 41648 2 2 REACTION (1-H-WTR(N,G),,SIG,,MXW) 41648 2 3 Thermal neutron absorption cross section 41648 2 4 SAMPLE Weight 4.86 gram. Thickness 1.0 cm (diameter). 41648 2 5 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 2 6 Value 0.66+-0.01 barn 41648 2 7 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 2 8 fluctuation, fluctuation of induced activity 41648 2 9 measurement sensitivity. 41648 2 10 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 2 11 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 2 12 comment of N.Otsuka ( NDS,IAEA). 41648 2 13 ENDBIB 11 0 41648 2 14 NOCOMMON 0 0 41648 2 15 DATA 2 1 41648 2 16 DATA DATA-ERR 41648 2 17 B B 41648 2 18 0.82 0.05 41648 2 19 ENDDATA 3 0 41648 2 20 ENDSUBENT 19 0 41648 299999 SUBENT 41648003 20180128 417741648 3 1 BIB 6 11 41648 3 2 REACTION (4-BE-9(N,G)4-BE-10,,SIG,,MXW) 41648 3 3 Thermal neutron absorption cross section 41648 3 4 SAMPLE BeO powder, weight 6.143 gram. Thickness 0.23 cm . 41648 3 5 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 3 6 Value 0.010+-0.001 barn 41648 3 7 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 3 8 fluctuation, fluctuation of induced activity 41648 3 9 measurement sensitivity. 41648 3 10 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 3 11 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 3 12 comment of N.Otsuka ( NDS,IAEA). 41648 3 13 ENDBIB 11 0 41648 3 14 NOCOMMON 0 0 41648 3 15 DATA 2 1 41648 3 16 DATA DATA-ERR 41648 3 17 B B 41648 3 18 0.018 0.010 41648 3 19 ENDDATA 3 0 41648 3 20 ENDSUBENT 19 0 41648 399999 SUBENT 41648004 20180128 417741648 4 1 BIB 6 13 41648 4 2 REACTION (6-C-0(N,G),,SIG,,MXW) 41648 4 3 Thermal neutron absorption cross section 41648 4 4 SAMPLE Graphite powder, weight 5.405 gram, thickness 0.42 cm .41648 4 5 Graphite brick, density 1.65, weight 7.37 gram, 41648 4 6 thickness 0.95 cm . 41648 4 7 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 4 8 Value 0.032+-0.002 barn 41648 4 9 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 4 10 fluctuation, fluctuation of induced activity 41648 4 11 measurement sensitivity. 41648 4 12 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 4 13 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 4 14 comment of N.Otsuka ( NDS,IAEA). 41648 4 15 ENDBIB 13 0 41648 4 16 NOCOMMON 0 0 41648 4 17 DATA 2 1 41648 4 18 DATA DATA-ERR 41648 4 19 B B 41648 4 20 0.044 0.010 41648 4 21 ENDDATA 3 0 41648 4 22 ENDSUBENT 21 0 41648 499999 SUBENT 41648005 20180128 417741648 5 1 BIB 6 11 41648 5 2 REACTION (12-MG-0(N,G),,SIG,,MXW) 41648 5 3 Thermal neutron absorption cross section 41648 5 4 SAMPLE Mg sample of 0.90cm thickness. 41648 5 5 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 5 6 Value 0.063+-0.004 barn 41648 5 7 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 5 8 fluctuation, fluctuation of induced activity 41648 5 9 measurement sensitivity. 41648 5 10 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 5 11 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 5 12 comment of N.Otsuka ( NDS,IAEA). 41648 5 13 ENDBIB 11 0 41648 5 14 NOCOMMON 0 0 41648 5 15 DATA 2 1 41648 5 16 DATA DATA-ERR 41648 5 17 B B 41648 5 18 0.062 0.007 41648 5 19 ENDDATA 3 0 41648 5 20 ENDSUBENT 19 0 41648 599999 SUBENT 41648006 20180128 417741648 6 1 BIB 6 11 41648 6 2 REACTION (24-CR-0(N,G),,SIG,,MXW) 41648 6 3 Thermal neutron absorption cross section 41648 6 4 SAMPLE Cr powder sample of 14.153g weight, 0.23 cm thickness.41648 6 5 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 6 6 Value 2.9+-0.2 barn 41648 6 7 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 6 8 fluctuation, fluctuation of induced activity 41648 6 9 measurement sensitivity. 41648 6 10 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 6 11 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 6 12 comment of N.Otsuka ( NDS,IAEA). 41648 6 13 ENDBIB 11 0 41648 6 14 NOCOMMON 0 0 3 41648 6 15 DATA 2 1 41648 6 16 DATA DATA-ERR 41648 6 17 B B 41648 6 18 3.2 0.1 41648 6 19 ENDDATA 3 0 41648 6 20 ENDSUBENT 19 0 41648 699999 SUBENT 41648007 20180128 417741648 7 1 BIB 6 12 41648 7 2 REACTION (26-FE-0(N,G),,SIG,,MXW) 41648 7 3 Thermal neutron absorption cross section 41648 7 4 SAMPLE Fe powder sample of 16.94 g weight, 0.24 cm thickness.41648 7 5 Fe solid sample of 31.20g weight,0.90cm thickness. 41648 7 6 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 7 7 Value 2.53+-0.06 barn 41648 7 8 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 7 9 fluctuation, fluctuation of induced activity 41648 7 10 measurement sensitivity. 41648 7 11 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 7 12 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 7 13 comment of N.Otsuka ( NDS,IAEA). 41648 7 14 ENDBIB 12 0 41648 7 15 NOCOMMON 0 0 3 41648 7 16 DATA 2 1 41648 7 17 DATA DATA-ERR 41648 7 18 B B 41648 7 19 2.6 0.1 41648 7 20 ENDDATA 3 0 41648 7 21 ENDSUBENT 20 0 41648 799999 SUBENT 41648008 20180128 417741648 8 1 BIB 6 13 41648 8 2 REACTION (28-NI-0(N,G),,SIG,,MXW) 41648 8 3 Thermal neutron absorption cross section 41648 8 4 SAMPLE Ni foil as hollow cylinder of 41648 8 5 weight 3.78g, 4.62g, 7.12g, 12.43g , 41648 8 6 thickness 0.004cm, 0.006cm, 0.096cm, 0.196cm 41648 8 7 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 8 8 Value 4.6+-0.2 barn 41648 8 9 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 8 10 fluctuation, fluctuation of induced activity 41648 8 11 measurement sensitivity. 41648 8 12 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 8 13 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 8 14 comment of N.Otsuka ( NDS,IAEA). 41648 8 15 ENDBIB 13 0 41648 8 16 NOCOMMON 0 0 3 41648 8 17 DATA 2 1 41648 8 18 DATA DATA-ERR 41648 8 19 B B 41648 8 20 4.5 0.1 41648 8 21 ENDDATA 3 0 41648 8 22 ENDSUBENT 21 0 41648 899999 SUBENT 41648009 20180128 417741648 9 1 BIB 6 12 41648 9 2 REACTION (29-CU-0(N,G),,SIG,,MXW) 41648 9 3 Thermal neutron absorption cross section 41648 9 4 SAMPLE Cu foils of weights 3.61g , 10.67g , 14.84g , 41648 9 5 thickness 0.04cm, 0.14cm, 0.18cm 41648 9 6 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 9 7 Value 3.7+-0.1 barn 41648 9 8 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 9 9 fluctuation, fluctuation of induced activity 41648 9 10 measurement sensitivity. 41648 9 11 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 9 12 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 9 13 comment of N.Otsuka ( NDS,IAEA). 41648 9 14 ENDBIB 12 0 41648 9 15 NOCOMMON 0 0 3 41648 9 16 DATA 2 1 41648 9 17 DATA DATA-ERR 41648 9 18 B B 41648 9 19 3.8 0.1 41648 9 20 ENDDATA 3 0 41648 9 21 ENDSUBENT 20 0 41648 999999 SUBENT 41648010 20180128 417741648 10 1 BIB 6 13 41648 10 2 REACTION (42-MO-0(N,G),,SIG,,MXW) 41648 10 3 Thermal neutron absorption cross section 41648 10 4 SAMPLE Mo foils as hollow cylinder of 41648 10 5 weights 2.27g, 4.57g, 6.68g, 8.18g, 41648 10 6 thickness 0.024cm, 0.048cm, 0.072cm, 0.096cm 41648 10 7 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 10 8 Value 2.5+-0.2 barn 41648 10 9 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 10 10 fluctuation, fluctuation of induced activity 41648 10 11 measurement sensitivity. 41648 10 12 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 10 13 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 10 14 comment of N.Otsuka ( NDS,IAEA). 41648 10 15 ENDBIB 13 0 41648 10 16 NOCOMMON 0 0 3 41648 10 17 DATA 2 1 41648 10 18 DATA DATA-ERR 41648 10 19 B B 41648 10 20 2.7 0.1 41648 10 21 ENDDATA 3 0 41648 10 22 ENDSUBENT 21 0 41648 1099999 SUBENT 41648011 20180128 417741648 11 1 BIB 6 15 41648 11 2 REACTION (73-TA-0(N,G),,SIG,,MXW) 41648 11 3 Thermal neutron absorption cross section 41648 11 4 SAMPLE Flat samples: 41648 11 5 Weight,g 0.558 1.06 41648 11 6 Thickness,cm 0.006 0.012 41648 11 7 Hollow cylinder from foil: 41648 11 8 weight 1.81g, thickness 0.024 cm . 41648 11 9 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 11 10 Value 21.3+-1.0 barn 41648 11 11 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 11 12 fluctuation, fluctuation of induced activity 41648 11 13 measurement sensitivity. 41648 11 14 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 11 15 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 11 16 comment of N.Otsuka ( NDS,IAEA). 41648 11 17 ENDBIB 15 0 41648 11 18 NOCOMMON 0 0 3 41648 11 19 DATA 2 1 41648 11 20 DATA DATA-ERR 41648 11 21 B B 41648 11 22 22.8 1.0 41648 11 23 ENDDATA 3 0 41648 11 24 ENDSUBENT 23 0 41648 1199999 SUBENT 41648012 20180128 417741648 12 1 BIB 6 12 41648 12 2 REACTION (74-W-0(N,G),,SIG,,MXW) 41648 12 3 Thermal neutron absorption cross section 41648 12 4 SAMPLE Flat sample of weight 1.01g, thickness 0.008cm . 41648 12 5 Cylinder sample of weight 5.10g, thickness 0.032cm . 41648 12 6 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 12 7 Value 19.2+-1.0 barn 41648 12 8 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 12 9 fluctuation, fluctuation of induced activity 41648 12 10 measurement sensitivity. 41648 12 11 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 12 12 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 12 13 comment of N.Otsuka ( NDS,IAEA). 41648 12 14 ENDBIB 12 0 41648 12 15 NOCOMMON 0 0 3 41648 12 16 DATA 2 1 41648 12 17 DATA DATA-ERR 41648 12 18 B B 41648 12 19 19.4 0.7 41648 12 20 ENDDATA 3 0 41648 12 21 ENDSUBENT 20 0 41648 1299999 SUBENT 41648013 20180128 417741648 13 1 BIB 6 11 41648 13 2 REACTION (82-PB-0(N,G),,SIG,,MXW) 41648 13 3 Thermal neutron absorption cross section 41648 13 4 SAMPLE Solid sample of 49.37g weight, 0.92cm thickness. 41648 13 5 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 13 6 Value 0.17+-0.01 barn 41648 13 7 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 13 8 fluctuation, fluctuation of induced activity 41648 13 9 measurement sensitivity. 41648 13 10 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 13 11 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 13 12 comment of N.Otsuka ( NDS,IAEA). 41648 13 13 ENDBIB 11 0 41648 13 14 NOCOMMON 0 0 3 41648 13 15 DATA 2 1 41648 13 16 DATA DATA-ERR 41648 13 17 B B 41648 13 18 0.17 0.01 41648 13 19 ENDDATA 3 0 41648 13 20 ENDSUBENT 19 0 41648 1399999 SUBENT 41648014 20180128 417741648 14 1 BIB 5 8 41648 14 2 REACTION (83-BI-209(N,G)83-BI-210,,SIG,,MXW) 41648 14 3 Thermal neutron absorption cross section 41648 14 4 SAMPLE Powder sample of 33.16g weight, 0.44 cm thickness. 41648 14 5 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 14 6 Value 0.032+-0.002 barn 41648 14 7 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 14 8 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 14 9 comment of N.Otsuka ( NDS,IAEA). 41648 14 10 ENDBIB 8 0 41648 14 11 NOCOMMON 0 0 3 41648 14 12 DATA 1 1 41648 14 13 DATA-APRX 41648 14 14 B 41648 14 15 0.01 41648 14 16 ENDDATA 3 0 41648 14 17 ENDSUBENT 16 0 41648 1499999 SUBENT 41648015 20180128 417741648 15 1 BIB 3 5 41648 15 2 REACTION (92-U-235(N,ABS),,SIG,,MXW) 41648 15 3 Thermal neutron absorption cross section 41648 15 4 SAMPLE Thickness 16.4 mg/cm2 , weight 0.257 g . 41648 15 5 (92-U-235,ENR=0.75) On Ni foil . 41648 15 6 STATUS (TABLE) Table 1 of T,PROKHOROV,1956 41648 15 7 ENDBIB 5 0 41648 15 8 NOCOMMON 0 0 3 41648 15 9 DATA 1 1 41648 15 10 DATA 41648 15 11 B 41648 15 12 625. 41648 15 13 ENDDATA 3 0 41648 15 14 ENDSUBENT 13 0 41648 1599999 SUBENT 41648016 20180128 417741648 16 1 BIB 6 18 41648 16 2 REACTION 1(26-FE-CMP(N,G),,SIG,,MXW) 41648 16 3 2(26-FE-CMP(N,G),,SIG,,MXW) 41648 16 4 Thermal neutron absorption cross section 41648 16 5 SAMPLE 1 Stainless steel EYaIT 41648 16 6 2 Stainless steel EI-211 41648 16 7 Hollow cylinder 41648 16 8 weight,gram 5.60, 9.88, 13.77, 16.19, 19.00, 21.18 41648 16 9 thickness,cm 0.08, 0.16, 0.24, 0.30, 0.38, 0.44 41648 16 10 Solid sample of weight 30.94g,32.29g, 41648 16 11 thickness 0.90cm of both. 41648 16 12 COMMENT A,,D.Hughes,J.Harvey, Neutron Cross Section. 1955. 41648 16 13 Value 2.53+-0.06 barn 41648 16 14 ERR-ANALYS (DATA-ERR) Mainly due to statistics, neutron beam 41648 16 15 fluctuation, fluctuation of induced activity 41648 16 16 measurement sensitivity. 41648 16 17 STATUS (TABLE) Table 1 of T,PROKHOROV 41648 16 18 HISTORY (20180128A) N,ABS -> N,G corrected according to a 41648 16 19 comment of N.Otsuka ( NDS,IAEA). 41648 16 20 ENDBIB 18 0 41648 16 21 NOCOMMON 0 0 3 41648 16 22 DATA 4 1 41648 16 23 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 41648 16 24 B B B B 41648 16 25 2.9 0.1 2.9 0.1 41648 16 26 ENDDATA 3 0 41648 16 27 ENDSUBENT 26 0 41648 1699999 ENDENTRY 16 0 4164899999999