ENTRY 13153 20181203 144513153 0 1 SUBENT 13153001 20181203 144513153 1 1 BIB 14 32 13153 1 2 INSTITUTE (1USANBS) 13153 1 3 REFERENCE (C,88MITO,,1033,1988) 13153 1 4 AUTHOR (G.P.Lamaze,C.M.Eisenhauer,J.A.Grundl,E.D.Mcgarry, 13153 1 5 F.J.Schima,V.Spiegel) 13153 1 6 TITLE Cross-section measurements in the intermediate- 13153 1 7 energy standard neutron field 13153 1 8 FACILITY (REAC,1USANBS) NBS 20 MW research reactor + U235 disks 13153 1 9 INC-SOURCE Fission spectrum, 235U 13153 1 10 INC-SPECT ISNF spectrum, resembles fast reactor spectrum, but 13153 1 11 has less complex structure. Median energy = 0.58 MeV. 13153 1 12 98% of fluence between 1.2 keV and 5.6 MeV. 13153 1 13 COMMENT The ISNF spectrum is available in IRDF-2002. 13153 1 14 METHOD (ACTIV) 13153 1 15 DETECTOR (GE-IN) 13153 1 16 MONITOR 252Cf/235U ratio for 140Ba-140La count rate is 0.772, 13153 1 17 which gives the FLUENCE transfer 13153 1 18 ERR-ANALYS (ERR-T) Contributions to total data uncertainty of 3.0%13153 1 19 are uncertainties: 13153 1 20 (ERR-1) .Cf source strength 1.1% 13153 1 21 (ERR-2) .Distance measurement 0.6%, 13153 1 22 (ERR-3) .235U cross section ratio 1.6% 13153 1 23 (ERR-4) .235U scattering 0.6% 13153 1 24 (ERR-5) .Fluence transfer statistics 0.9% 13153 1 25 (ERR-6) .Extrapolation to zero thickness 1.0% 13153 1 26 (ERR-7) .Neutron background 0.3% 13153 1 27 (ERR-8) .Gamma counter efficiency 1.0% 13153 1 28 (ERR-S) .Activation statistics 0.6% 13153 1 29 STATUS (APRVD) G.P.Lamaze, 89/12/18. 13153 1 30 (TABLE) Table III of Proc. of 88Mito, p1033 (1988) 13153 1 31 HISTORY (19891029C) 13153 1 32 (20181130U) Added COMMENT, revised error analysis, 13153 1 33 converted to lower and upper case 13153 1 34 ENDBIB 32 0 13153 1 35 COMMON 10 6 13153 1 36 EN-MEAN ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 13153 1 37 ERR-6 ERR-7 ERR-8 ERR-S 13153 1 38 MEV PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 13153 1 39 PER-CENT PER-CENT PER-CENT PER-CENT 13153 1 40 0.58 1.1 0.6 1.6 0.6 0.9 13153 1 41 1.0 0.3 1.0 0.6 13153 1 42 ENDCOMMON 6 0 13153 1 43 ENDSUBENT 42 0 13153 199999 SUBENT 13153002 20181203 144513153 2 1 BIB 5 7 13153 2 2 REACTION (49-IN-115(N,INL)49-IN-115-M,,SIG,,FST) 13153 2 3 SAMPLE Natural in foil, 0.25mm thick, 12.7mm diameter 13153 2 4 DECAY-DATA (49-IN-115-M,4.486HR,DG,336.,0.458) 13153 2 5 CORRECTION Background subtraction 0.75% 13153 2 6 Self-absorption correction 1.2% 13153 2 7 ERR-ANALYS Contribution to total uncertainty from fluence 13153 2 8 gradient correction 1.0% 13153 2 9 ENDBIB 7 0 13153 2 10 NOCOMMON 0 0 13153 2 11 DATA 2 1 13153 2 12 DATA ERR-T 13153 2 13 MB MB 13153 2 14 97.0 2.5 13153 2 15 ENDDATA 3 0 13153 2 16 ENDSUBENT 15 0 13153 299999 SUBENT 13153003 20181203 144513153 3 1 BIB 5 8 13153 3 2 REACTION (79-AU-197(N,G)79-AU-198,,SIG,,FST) 13153 3 3 SAMPLE 50 Mg/cm**2 Au, 1.3 mg/cm**2 Au-Al alloy 13153 3 4 DECAY-DATA (79-AU-198-G,2.6956D,DG,411.8,1.0) 13153 3 5 CORRECTION Background subtraction 0.6% 13153 3 6 Correction to zero thickness 0.1% to 4.1% 13153 3 7 Fluence gradient correction 1.4% 13153 3 8 ERR-ANALYS Contribution to total uncertainty from fluence 13153 3 9 gradient correction 1.0% 13153 3 10 ENDBIB 8 0 13153 3 11 NOCOMMON 0 0 13153 3 12 DATA 2 1 13153 3 13 DATA ERR-T 13153 3 14 MB MB 13153 3 15 411. 11. 13153 3 16 ENDDATA 3 0 13153 3 17 ENDSUBENT 16 0 13153 399999 SUBENT 13153004 20181203 144513153 4 1 BIB 5 7 13153 4 2 REACTION (11-NA-23(N,G)11-NA-24,,SIG,,FST) 13153 4 3 SAMPLE Reagent grade salt pellet, 12.7mm diameter, 1.3mm thick13153 4 4 DECAY-DATA (11-NA-24,15.0HR,DG,1368.5,1.0) 13153 4 5 CORRECTION Background subtraction 0.6% 13153 4 6 Correction to zero thickness 4% to 12% 13153 4 7 ERR-ANALYS Contribution to total uncertainty from fluence gradient13153 4 8 correction 6% 13153 4 9 ENDBIB 7 0 13153 4 10 NOCOMMON 0 0 13153 4 11 DATA 2 1 13153 4 12 DATA ERR-T 13153 4 13 MB MB 13153 4 14 1.57 0.10 13153 4 15 ENDDATA 3 0 13153 4 16 ENDSUBENT 15 0 13153 499999 SUBENT 13153005 20181203 144513153 5 1 BIB 5 7 13153 5 2 REACTION (21-SC-45(N,G)21-SC-46,,SIG,,FST) 13153 5 3 SAMPLE Metal foils, 12.7mm diameter, 0.15mm thick 13153 5 4 DECAY-DATA (21-SC-46-G,83.83D,DG,889.9,0.9998,DG,1120.5,0.9999) 13153 5 5 CORRECTION Background subtraction 0.4% 13153 5 6 Correction to zero thickness 1.6% 13153 5 7 ERR-ANALYS Contribution to total uncertainty from fluence gradient13153 5 8 correction 1.0% 13153 5 9 ENDBIB 7 0 13153 5 10 NOCOMMON 0 0 13153 5 11 DATA 2 1 13153 5 12 DATA ERR-T 13153 5 13 MB MB 13153 5 14 24.4 0.8 13153 5 15 ENDDATA 3 0 13153 5 16 ENDSUBENT 15 0 13153 599999 SUBENT 13153006 20181203 144513153 6 1 BIB 6 8 13153 6 2 REACTION (47-AG-109(N,G)47-AG-110-M,,SIG,,FST) 13153 6 3 SAMPLE Metal foils, 12.7mm diameter, 0.13mm or 0.25MM thick 13153 6 4 DECAY-DATA (47-AG-110-M,249.78D,DG,659.,0.9438,DG,885.,0.7260) 13153 6 5 CORRECTION Background subtraction 0.4% 13153 6 6 Correction to zero thickness 1.2% 13153 6 7 ERR-ANALYS Contribution to total uncertainty from fluence gradient13153 6 8 correction 1.0% 13153 6 9 HISTORY (19900604A) BIB correction 13153 6 10 ENDBIB 8 0 13153 6 11 NOCOMMON 0 0 13153 6 12 DATA 2 1 13153 6 13 DATA ERR-T 13153 6 14 MB MB 13153 6 15 23.8 0.9 13153 6 16 ENDDATA 3 0 13153 6 17 ENDSUBENT 16 0 13153 699999 SUBENT 13153007 20181203 144513153 7 1 BIB 5 8 13153 7 2 REACTION (27-CO-59(N,G)27-CO-60,,SIG,,FST) 13153 7 3 SAMPLE Metal foils, 12.7mm diameter, 0.06mm or 0.25mm thick 13153 7 4 DECAY-DATA (27-CO-60-G,1925.23D,DG,1173.2,0.9990,DG,1332.5,0.9998)13153 7 5 CORRECTION Background subtraction 0.7% 13153 7 6 Correction to zero thickness 12.% 13153 7 7 Fluence gradient correction 0 to 4% 13153 7 8 ERR-ANALYS Contribution to total uncertainty from fluence gradient13153 7 9 correction 3% 13153 7 10 ENDBIB 8 0 13153 7 11 NOCOMMON 0 0 13153 7 12 DATA 2 1 13153 7 13 DATA ERR-T 13153 7 14 MB MB 13153 7 15 36.3 1.5 13153 7 16 ENDDATA 3 0 13153 7 17 ENDSUBENT 16 0 13153 799999 ENDENTRY 7 0 1315399999999