ENTRY 22234 20230212 231422234 0 1 SUBENT 22234001 20230212 231422234 1 1 BIB 13 39 22234 1 2 TITLE Measurement of macroscopic and microscopic thermal 22234 1 3 neutron cross sections of V,Co,In,Dy and Au using 22234 1 4 neutron self absorption properties 22234 1 5 AUTHOR (I.Celenk,H.Demirel,A.Ozmen) 22234 1 6 REFERENCE (J,JRN,148,393,1991) Main ref. 22234 1 7 INSTITUTE (2TUKANR) 22234 1 8 INC-SOURCE (PU-BE) A 5 Ci Pu238-Be neutron source immersed in a 22234 1 9 water tank was used. The thermal flux is about 1.e4 22234 1 10 n/cm2/S at the irradiation position. 22234 1 11 INC-SPECT Thermal neutron spectrum 22234 1 12 METHOD (ACTIV) The neutron activation technique combined 22234 1 13 with a neutron self-absorption method was used. 22234 1 14 For each element, foils of different thicknesses were 22234 1 15 activated with thermal neutrons and the induced gamma-22234 1 16 activity measured. 22234 1 17 DETECTOR (HPGE) The gamma activity was counted using a high 22234 1 18 purity Ge detector which has an efficiency of 12.45% 22234 1 19 relative to a 3by3 inch NaI detector, a FWHM of 2 keV 22234 1 20 at 1332 keV and a peak to compton ration of 42. 22234 1 21 ANALYSIS The gamma-photopeak areas as a function of foil 22234 1 22 thickness were model fitted to yield the total thermal22234 1 23 neutron macroscopic cross section, from which the 22234 1 24 microscopic cross-section was calculated dividing 22234 1 25 the macroscopic cross section by the number of nuclei 22234 1 26 per cm3. 22234 1 27 CORRECTION Correction for gamma-self absorption was made on the 22234 1 28 basis of experimental photopeak areas by using the 22234 1 29 linear attenuation coefficients determined using 22234 1 30 foils of different thicknesses for each element. 22234 1 31 For the V foils,no gamma-self-absorption was observed.22234 1 32 STATUS (TABLE) Tbl.5 from J.Radioanal.Nucl.Chem.,148(1991)393 22234 1 33 ERR-ANALYS No uncertainties on data are given 22234 1 34 HISTORY (19930712C) N.O. 22234 1 35 (19931129E) 22234 1 36 (19961224A) * * Corrected by S.Maev 22234 1 37 incident neutron energy was introduced 22234 1 38 INC-SPECT keyword introduced, INC-SOURCE corrected *22234 1 39 (20230212A) SD:Updated to new date formats,lower case. 22234 1 40 Correction in all Subents. 22234 1 41 ENDBIB 39 0 22234 1 42 COMMON 1 3 22234 1 43 EN-DUMMY 22234 1 44 EV 22234 1 45 2.53E-02 22234 1 46 ENDCOMMON 3 0 22234 1 47 ENDSUBENT 46 0 22234 199999 SUBENT 22234002 20230212 231422234 2 1 BIB 4 15 22234 2 2 REACTION (23-V-51(N,G)23-V-52,,SIG) 22234 2 3 DECAY-DATA (23-V-52,3.75MIN,DG,1434.4,1.000) 22234 2 4 SAMPLE The V foils were irradiated for 8 min, transferred to 22234 2 5 counting in 1 min, counted for 8 min and returned to 22234 2 6 the irradiation position in 1 min. The process was 22234 2 7 repeated 5 times- i.e. with the cyclic activation 22234 2 8 technique. All foils were irradiated with and without 22234 2 9 Cd covers and the epithermal contribution was 22234 2 10 subtracted. 22234 2 11 Thickness Geom.form Width/diam. Purity 22234 2 12 cm cm % 22234 2 13 0.0025 - 0.3 square 1.25 99.9 22234 2 14 HISTORY (19961224U) ERR-ANALYS keyword moved to Subent 001 22234 2 15 STATUS keyword deleted 22234 2 16 (20230212U) SD: BIB updated. 22234 2 17 ENDBIB 15 0 22234 2 18 NOCOMMON 0 0 22234 2 19 DATA 1 1 22234 2 20 DATA 22234 2 21 B 22234 2 22 10.13 22234 2 23 ENDDATA 3 0 22234 2 24 ENDSUBENT 23 0 22234 299999 SUBENT 22234003 20230212 231422234 3 1 BIB 4 13 22234 3 2 REACTION (27-CO-59(N,G)27-CO-60-M,,SIG) 22234 3 3 DECAY-DATA (27-CO-60-M,10.47MIN,DG,58.6,0.02) 22234 3 4 SAMPLE Pure foils of Co were activated in the conventional 22234 3 5 (single-activation and single-counting) way. 22234 3 6 Irradiation Waiting Counting 22234 3 7 time time time 22234 3 8 50 m 2 m 50 m 22234 3 9 Thickness Geom.form Width/diam. Purity 22234 3 10 cm cm % 22234 3 11 0.0025 - 0.19 square 1.25 99.95 22234 3 12 HISTORY (19961224U) ERR-ANALYS keyword moved to Subent 001 22234 3 13 STATUS keyword deleted 22234 3 14 (20230212U) SD: BIB updated. 22234 3 15 ENDBIB 13 0 22234 3 16 NOCOMMON 0 0 22234 3 17 DATA 1 1 22234 3 18 DATA 22234 3 19 B 22234 3 20 46.94 22234 3 21 ENDDATA 3 0 22234 3 22 ENDSUBENT 21 0 22234 399999 SUBENT 22234004 20230212 231422234 4 1 BIB 4 13 22234 4 2 REACTION (29-CU-63(N,G)29-CU-64,,SIG) 22234 4 3 DECAY-DATA (29-CU-64,12.8HR,DG,511.,0.38) 22234 4 4 SAMPLE Pure foils of Co were activated in the conventional 22234 4 5 (single-activation and single-counting) way. 22234 4 6 Irradiation Waiting Counting 22234 4 7 time time time 22234 4 8 3 hr 2 m 50 m 22234 4 9 Thickness Geom.form Width/diam. Purity 22234 4 10 cm cm % 22234 4 11 0.04 - 0.76 circular 2.50 99.9999 22234 4 12 HISTORY (19961224U) ERR-ANALYS keyword moved to Subent 001 22234 4 13 STATUS keyword deleted 22234 4 14 (20230212U) SD: BIB updated. 22234 4 15 ENDBIB 13 0 22234 4 16 NOCOMMON 0 0 22234 4 17 DATA 1 1 22234 4 18 DATA 22234 4 19 B 22234 4 20 11.24 22234 4 21 ENDDATA 3 0 22234 4 22 ENDSUBENT 21 0 22234 499999 SUBENT 22234005 20230212 231422234 5 1 BIB 4 14 22234 5 2 REACTION (49-IN-115(N,G)49-IN-116-M1+M2,,SIG) 22234 5 3 DECAY-DATA (49-IN-116-M1,54.MIN,DG,417.,0.36) 22234 5 4 SAMPLE Pure foils of Co were activated in the conventional 22234 5 5 (single-activation and single-counting) way. 22234 5 6 Irradiation Waiting Counting 22234 5 7 time time time 22234 5 8 10 m 2 m 2000 s 22234 5 9 Thickness Geom.form Width/diam. Purity 22234 5 10 cm cm % 22234 5 11 0.005 - 0.2286 circular 2.00 99.95 22234 5 12 HISTORY (19961224U) ERR-ANALYS keyword moved to Subent 001 22234 5 13 STATUS keyword deleted 22234 5 14 (20230212A) SD: SF4=In-116m -> In-116m1+m2 in REACTION 22234 5 15 code. BIB updated. 22234 5 16 ENDBIB 14 0 22234 5 17 NOCOMMON 0 0 22234 5 18 DATA 1 1 22234 5 19 DATA 22234 5 20 B 22234 5 21 191.78 22234 5 22 ENDDATA 3 0 22234 5 23 ENDSUBENT 22 0 22234 599999 SUBENT 22234006 20230212 231422234 6 1 BIB 4 13 22234 6 2 REACTION (66-DY-164(N,G)66-DY-165-G,M+,SIG) 22234 6 3 DECAY-DATA (66-DY-165-G,2.32HR,DG,94.6,0.04) 22234 6 4 SAMPLE Pure foils of Co were activated in the conventional 22234 6 5 (single-activation and single-counting) way. 22234 6 6 Irradiation Waiting Counting 22234 6 7 time time time 22234 6 8 2 hr 2 m 50 m 22234 6 9 Thickness Geom.form Width/diam. Purity 22234 6 10 cm cm % 22234 6 11 0.0025 - 0.035 square 1.00 99.95 22234 6 12 HISTORY (19961224U) ERR-ANALYS keyword moved to Subent 001 22234 6 13 STATUS keyword deleted 22234 6 14 (20230212A) SD: SF5=M+ added to REACTION code. 22234 6 15 ENDBIB 13 0 22234 6 16 NOCOMMON 0 0 22234 6 17 DATA 1 1 22234 6 18 DATA 22234 6 19 B 22234 6 20 1056. 22234 6 21 ENDDATA 3 0 22234 6 22 ENDSUBENT 21 0 22234 699999 SUBENT 22234007 20230212 231422234 7 1 BIB 4 13 22234 7 2 REACTION (79-AU-197(N,G)79-AU-198,,SIG) 22234 7 3 DECAY-DATA (79-AU-198-G,2.7D,DG,411.8,0.95) 22234 7 4 SAMPLE Pure foils of Co were activated in the conventional 22234 7 5 (single-activation and single-counting) way. 22234 7 6 Irradiation Waiting Counting 22234 7 7 time time time 22234 7 8 3 hr 2 m 50 m 22234 7 9 Thickness Geom.form Width/diam. Purity 22234 7 10 cm cm % 22234 7 11 0.0022 - 0.145 square 1.25 99.99 22234 7 12 HISTORY (19961224U) ERR-ANALYS keyword moved to Subent 001 22234 7 13 STATUS keyword deleted 22234 7 14 (20230212A) SD: SF4=Au-198g -> Au-198 in REACTION code.22234 7 15 ENDBIB 13 0 22234 7 16 NOCOMMON 0 0 22234 7 17 DATA 1 1 22234 7 18 DATA 22234 7 19 B 22234 7 20 107.55 22234 7 21 ENDDATA 3 0 22234 7 22 ENDSUBENT 21 0 22234 799999 ENDENTRY 7 0 2223499999999