ENTRY 22875 20090218 22082287500000001 SUBENT 22875001 20090218 22082287500100001 BIB 17 113 2287500100002 TITLE .232Th(n,gamma) cross section from 4keV to 140 keV 2287500100003 AUTHOR (A.Borella, K.Volev, A.Brusegan, P.Schillebeeckx, 2287500100004 F.Corvi, N.Koyumdjieva, N.Janeva, A.A.Lukyanov) 2287500100005 INSTITUTE (2ZZZGEL) Schillebeeckx, Volev, Borella, Brusegan, 2287500100006 Corvi 2287500100007 (3BULBLA) Koyumdjieva, Janeva, Lukyanov 2287500100008 REFERENCE (J,NSE,152,1,2006) Main reference. data and 2287500100009 covariance matrices are given 2287500100010 REL-REF (R,,D.OLSEN+,J,NSE,82,239,1982) Resonance analysis 2287500100011 of Th-232 2287500100012 (N,,J.M.SALOMEE+,J,NIM,179,(1),13,1981) Experimental 2287500100013 Details For Targets and Accelerator 2287500100014 (N,,J.M.SALOMEE+,J,PHCL,8,(4),261,1986) 2287500100015 Experimental Details Concerning GELINA Facility 2287500100016 C. Bastian, SPIE,The International Society for 2287500100017 Optical Engineering, Vol. 2867 (1997) 611) Analysis 2287500100018 procedures of GELINA TOF-spectra 2287500100019 FACILITY (LINAC,2ZZZGEL) GELINA, 150 MeV Geel pulsed electron 2287500100020 linac, Electron burst width 1ns, Repetition rate 2287500100021 800 Hz,Average electron current 70 microA, Average 2287500100022 electron energy 100 MeV. 2287500100023 INC-SOURCE (PHOTO)Neutrons produced by (GAMMA,N) and 2287500100024 (GAMMA,FISS) Reactions induced via bremsstrahlung 2287500100025 from the electron beam hitting a rotating uranium 2287500100026 target 2287500100027 (THCOL) Fast neutron from the target moderated 2287500100028 to a white spectrum by water contained in 2287500100029 berillium canning of 4.0cm thick walls situated 2287500100030 below and above uranium target 2287500100031 INC-SPECT .White Neutron Source 2287500100032 10B overlap filter, 9mm thick Pb filter and Na black 2287500100033 resonance filter kept permanently in the neutron beam;2287500100034 The total energy detection principle in combination 2287500100035 with the pulse height weighting technique was applied.2287500100036 SAMPLE .Metallic natural thorium disc, 2287500100037 diameter = 80 mm, thickness = 1.588E-3 at/b 2287500100038 METHOD (TOF) GELINA Flight path number 5; angle of the flight2287500100039 path with respect to the electron beam is 252deg; 2287500100040 The weighting function was obtained by Monte Carlo 2287500100041 simulations validated by experiment. 2287500100042 The data have been normalized to the well-isolated an2287500100043 saturated 232Th resonance at 23.5 eV. 2287500100044 DETECTOR (SCIN) Gamma-rays detected with two C6D6 detectors 2287500100045 placed perpendicular to the neutron beam at 14.367 m 2287500100046 from the neutron source 2287500100047 (IOCH) 10B-loaded ionization chamber placed at 13.56 m 2287500100048 from the neutron source for flux shape measurements 2287500100049 MONITOR ((MONIT)90-TH-232(N,0),,EN) Normalisation based on 2287500100050 the well-isolated and almost saturated resonance 2287500100051 232Th at 23.5 eV 2287500100052 (5-B-10(N,A)3-LI-7,,SIG) ENDF/B-VI 2287500100053 The interpolation of the 10B cross-section 2287500100054 data was done log-log. 2287500100055 ANALYSIS .Data analysis performed with the AGS package 2287500100056 (C. Bastian). The capture yield is obtained from dead 2287500100057 time and background corrected response of SCIN and 2287500100058 IOCH. A sample dependend weigthing function is applied2287500100059 CORRECTION .Corrections were made for: 2287500100060 * Dead time 2287500100061 * Background 2287500100062 flux: based on S, Na, W, Ag black resonances 2287500100063 capture: 208Pb scattering sample + Na black resonance2287500100064 * Final capture yield corrected for multiple 2287500100065 scattering and self-shielding effect (see 2287500100066 Volev et al.) 2287500100067 ERR-ANALYS (ERR-T)Total uncertainties were deduced by propagating 2287500100068 correlated and uncorrelated partial uncertainties 2287500100069 using AGS. Details in main reference 2287500100070 Partial uncertainties considered were due to: 2287500100071 * counting statistics, between 0.18% and 0.25 % 2287500100072 * dead time and background correction 2287500100073 * flux shape and normalisation, 1.5% 2287500100074 * multiple scattering and self-shielding correction 2287500100075 COVARIANCE .Covariation matrix after self-shielding and 2287500100076 multiple scattering corrections 2287500100077 Min-E 2287500100078 Max-E 2287500100079 4 6 1. .85 .85 .86 .86 .87 .88 .88 .88 .89 .89 ....2287500100080 6 8 1. .88 .89 .89 .89 .91 .91 .91 .92 .92 ....2287500100081 8 10 1. .89 .89 .90 .91 .91 .91 .92 .92 ....2287500100082 10 15 1. .90 .91 .93 .92 .93 .93 .93 ....2287500100083 15 20 1. .91 .92 .92 .93 .93 .93 ....2287500100084 20 30 1. .93 .93 .93 .94 .93 ....2287500100085 30 40 1. .95 .95 .96 .95 ....2287500100086 40 50 1. .95 .96 .95 ....2287500100087 50 60 1. .96 .96 ....2287500100088 60 80 1. .96 ....2287500100089 80 100 1. ....2287500100090 100 120 ....2287500100091 120 140 ....2287500100092 .Two last columns - 2287500100093 --------------------- 2287500100094 Min-E 2287500100095 Max-E 2287500100096 4 6 .... .89 .88 .88 2287500100097 6 8 .... .92 .91 .91 2287500100098 8 10 .... .92 .91 .91 2287500100099 10 15 .... .93 .93 .92 2287500100100 15 20 .... .93 .93 .92 2287500100101 20 30 .... .93 .93 .93 2287500100102 30 40 .... .95 .95 .95 2287500100103 40 50 .... .95 .95 .95 2287500100104 50 60 .... .96 .95 .95 2287500100105 60 80 .... .96 .96 .96 2287500100106 80 100 .... 1. .96 .95 2287500100107 100 120 .... 1. .95 2287500100108 120 140 .... 1. 2287500100109 .Covariance file exists and may be obtained 2287500100110 on request 2287500100111 HISTORY (20050901C) HH/SM 2287500100112 (20060119A) Reference added, error structure and 2287500100113 covariance matrices given 2287500100114 (20090218A) Data table in subent 002 corrected 2287500100115 ENDBIB 113 0 2287500100116 COMMON 1 3 2287500100117 MONIT 2287500100118 EV 2287500100119 23.5 2287500100120 ENDCOMMON 3 0 2287500100121 ENDSUBENT 120 0 2287500199999 SUBENT 22875002 20090218 22082287500200001 BIB 8 55 2287500200002 REACTION (90-TH-232(N,G)90-TH-233,,SIG,,AV) Averaged over 2287500200003 energy interval given in the data section 2287500200004 REL-REF (A,,W.P.POENITZ+,R,ANL-NDM-42,197803) 2287500200005 (D,,K.WISSHAK+,J,NSE,137,183,2001) 40% difference 2287500200006 above 15 keV 2287500200007 (D,,K.KOBAYASHI+,J,NST,18,(11),823,198111) Difference 2287500200008 above 15 keV 2287500200009 (D,,R.L.MACKLIN+,J,NSE,64,849,1977) Difference 2287500200010 above 15 keV 2287500200011 COMMENT . Quantities in the DATA section is: 2287500200012 .EN-Min (keV) - lower energy bin 2287500200013 .EN-Max (keV) - upper energy bin 2287500200014 .DATA (mbarn) - capture cross section 2287500200015 ERR-ANALYS (ERR-S) Uncorrelated error component due to the 2287500200016 counting statistics on both the capture and 2287500200017 neutron flux measurements 2287500200018 (ERR-1) The total error after dead-time correction 2287500200019 and background subtraction 2287500200020 MISC-COL (MISC) - multiple scattering and self-shielding 2287500200021 correction 2287500200022 STATUS .Table II of main reference 2287500200023 COVARIANCE .Covariation matrix BEFORE self-shielding and 2287500200024 multiple scattering corrections 2287500200025 Min-E 2287500200026 Max-E 2287500200027 4 6 1. .60 .57 .58 .55 .53 .62 .58 .56 .61 .58 ....2287500200028 6 8 1. .55 .56 .53 .51 .60 .57 .55 .60 .56 ....2287500200029 8 10 1. .54 .51 .49 .58 .55 .52 .57 .54 ....2287500200030 10 15 1. .52 .50 .59 .56 .54 .59 .55 ....2287500200031 15 20 1. .48 .57 .54 .52 .56 .53 ....2287500200032 20 30 1. .55 .52 .50 .54 .51 ....2287500200033 30 40 1. .61 .59 .64 .61 ....2287500200034 40 50 1. .56 .61 .58 ....2287500200035 50 60 1. .59 .56 ....2287500200036 60 80 1. .61 ....2287500200037 80 100 1. ....2287500200038 100 120 ....2287500200039 120 140 ....2287500200040 .Two last columns - 2287500200041 --------------------- 2287500200042 Min-E Max-E 2287500200043 4 6 .... .58 .54 .51 2287500200044 6 8 .... .56 .53 .49 2287500200045 8 10 .... .54 .51 .47 2287500200046 10 15 .... .55 .52 .49 2287500200047 15 20 .... .53 .50 .47 2287500200048 20 30 .... .51 .48 .45 2287500200049 30 40 .... .61 .57 .54 2287500200050 40 50 .... .58 .54 .51 2287500200051 50 60 .... .56 .52 .49 2287500200052 60 80 .... .61 .57 .54 2287500200053 80 100 .... 1. .54 .51 2287500200054 100 120 .... 1. .48 2287500200055 120 140 .... 1. 2287500200056 HISTORY (20090218A) Data table (EN-MAX) corrected 2287500200057 ENDBIB 55 0 2287500200058 NOCOMMON 0 0 2287500200059 DATA 9 13 2287500200060 EN-MIN EN-MAX DATA ERR-S ERR-1 ERR-T 2287500200061 ERR-T MISC MISC-ERR 2287500200062 KEV KEV MB PER-CENT PER-CENT PER-CENT 2287500200063 MB NO-DIM NO-DIM 2287500200064 4. 6. 1107.9 0.49 0.17 1.70 2287500200065 18.8 1.0159 0.0066 2287500200066 6. 8. 934.2 0.44 0.19 1.64 2287500200067 15.3 1.0213 0.0051 2287500200068 8. 10. 845.1 0.43 0.21 1.63 2287500200069 13.8 1.0241 0.0051 2287500200070 10. 15. 749.7 0.38 0.15 1.61 2287500200071 12.1 1.0269 0.0046 2287500200072 15. 20. 638.7 0.39 0.18 1.61 2287500200073 10.3 1.0288 0.0046 2287500200074 20. 30. 571.3 0.36 0.14 1.59 2287500200075 9.1 1.0300 0.0041 2287500200076 30. 40. 490.3 0.32 0.18 1.56 2287500200077 7.6 1.0305 0.0031 2287500200078 40. 50. 429.6 0.31 0.19 1.56 2287500200079 6.7 1.0304 0.0031 2287500200080 50. 60. 382.9 0.33 0.22 1.55 2287500200081 5.9 1.0302 0.0026 2287500200082 60. 80. 311.4 0.30 0.18 1.55 2287500200083 4.8 1.0301 0.0026 2287500200084 80. 100. 242.5 0.33 0.22 1.56 2287500200085 3.8 1.0298 0.0026 2287500200086 100. 120. 217.8 0.33 0.23 1.55 2287500200087 3.4 1.0295 0.0026 2287500200088 120. 140. 201.6 0.33 0.24 1.55 2287500200089 3.1 1.0292 0.0026 2287500200090 ENDDATA 30 0 2287500200091 ENDSUBENT 90 0 2287500299999 ENDENTRY 2 0 2287599999999