ENTRY 22842 20130112 22342284200000001 SUBENT 22842001 20130112 22342284200100001 BIB 12 44 2284200100002 TITLE .Measurement of thermal neutron cross section and 2284200100003 resonance integral for 186W(n,gamma)187W reaction 2284200100004 by the activation method using a single monitor 2284200100005 AUTHOR (M.Karadag, H.Yuecel) 2284200100006 INSTITUTE (2TUKANR) Yuecel. Experimental site 2284200100007 (2TUKGZU) Karadag. Gazi University, Gazi Educational 2284200100008 Faculty, 06500 Teknikokullar-Ankara, Turkey 2284200100009 REFERENCE (J,ANE,31,1285,2004) Main reference, data are given 2284200100010 METHOD (ACTIV) Activation 2284200100011 (CADMB) Cadmium difference method for the neutron 2284200100012 cut-off energy determination 2284200100013 (SITA) Single-target irradiation 2284200100014 DETECTOR (HPGE) Resolution 1.80 keV at 1332.5 keV gamma-energy 2284200100015 of Co-60 and 0.97 keV for 122 keV of Co-57. 2284200100016 Relative efficiency is 22.6%. 2284200100017 INC-SOURCE (AM-BE) Three 592 GBq 241Am-Be isotopic neutron source 2284200100018 INC-SPECT .Alpha-berillium source was immersed in paraffin. 2284200100019 Thermal neutron flux was (1.5+-0.2)E+4 and 2284200100020 epithermal neutron flux was (1.4+-0.1)E+3 n/cm2/sec. 2284200100021 Each irradiations were performed with and without 2284200100022 cadmium shield 2284200100023 DECAY-DATA (74-W-187,23.72HR,DG,479.52,0.218, 2284200100024 DG,685.73,0.273) 2284200100025 SAMPLE .Manganese Mn-O2 and Wolfram W-O3 oxide powders were 2284200100026 diluted with the finely grained Al2-O3 powder 2284200100027 by 98.0 - 96.6%. Each sample was filled in polystyrene2284200100028 cylindrical tube and irradiated with and without 2284200100029 cylindrical cadmium shield case 2284200100030 CORRECTION .Corrections for background were made with the help of 2284200100031 irradiating a bare cadmium case 2284200100032 Following information is used for calculation thermal 2284200100033 neutron self-shielding correction factor: 2284200100034 Element Atomic weight, Microscopic cross-sections (b)2284200100035 M (g/mol) --------------------------- 2284200100036 Absorption, Scattering, Total 2284200100037 8-O 15.9994 1.9/10**4 3.78 3.78 2284200100038 13Al 26.9815 0.231 1.41 1.64 2284200100039 25Mn 54.9380 13.41 2.17 15.58 2284200100040 74W 183.840 18.2 4.97 23.2 2284200100041 HISTORY (20040806A) JOS 2284200100042 (20050615U) BIB information corrected 2284200100043 (20130112A) SD: INC-SOURCE was corrected. ERR-ANALYS 2284200100044 was corrected in Subents 2,3. ASSUMED, MISC-COL were 2284200100045 deleted; information moved to CORRECTION. 2284200100046 ENDBIB 44 0 2284200100047 NOCOMMON 0 0 2284200100048 ENDSUBENT 47 0 2284200199999 SUBENT 22842002 20130112 22342284200200001 BIB 6 32 2284200200002 REACTION (74-W-186(N,G)74-W-187,,SIG,,MXW) 2284200200003 MONITOR (25-MN-55(N,G)25-MN-56,,SIG) 2284200200004 DECAY-MON (25-MN-56,2.5789HR,DG,846.75,0.983) 2284200200005 ERR-ANALYS (ERR-T) Total uncertainty includes the square root of 2284200200006 the DATA-ERR1 + DATA-ERR2 + MONIT-ERR 2284200200007 (DATA-ERR1) Total error as the square root of the 2284200200008 quadratic sum of all its constituents 2284200200009 (ERR-S) Statistical error for 1.65*(dispersion) 2284200200010 confidence level for 186-W 2284200200011 (ERR-1) Error of the 186-W half-life 2284200200012 (ERR-2) Error of detection efficiency for 186-W 2284200200013 (ERR-3) Error of the sample mass for 186-W 2284200200014 (ERR-4) Error of the 186W isotopic abundance 2284200200015 (ERR-5) Error of the 186W branching ratio 2284200200016 (ERR-6) Error of the 186W thermal neutron self- 2284200200017 shielding factor 2284200200018 (ERR-7) Error of the 186W cadmium correction factor 2284200200019 (ERR-8,,0.05) Max error of the 186W g-Westcott factor 2284200200020 --Another set of uncertainties: 2284200200021 (DATA-ERR2) Total error in Mn-55 cross 2284200200022 section includes: 2284200200023 (DATA-ERR3) Statistical error for 1.65*(dispersion) 2284200200024 confidence level for 55-Mn 2284200200025 (ERR-9) Error of detection efficiency for 55-Mn 2284200200026 (ERR-10) Error of the sample mass for 55-Mn 2284200200027 (ERR-11) Error of the 55-Mn branching ratio 2284200200028 (ERR-12) Error of the 55Mn thermal neutron self- 2284200200029 shielding factor 2284200200030 (ERR-13,,0.05) Max error of the 55Mn g-Westcott factor 2284200200031 (MONIT-ERR) Total error of the reference sigma 2284200200032 STATUS (TABLE) .From table 5 of ANE,31,1285 2284200200033 HISTORY (20130112A) SD: ERR-ANALYS was corrected. 2284200200034 ENDBIB 32 0 2284200200035 COMMON 15 9 2284200200036 DATA-ERR1 ERR-S DATA-ERR2 ERR-1 ERR-2 ERR-3 2284200200037 ERR-4 ERR-5 ERR-6 ERR-7 DATA-ERR3 ERR-9 2284200200038 ERR-10 ERR-11 ERR-12 2284200200039 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2284200200040 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2284200200041 PER-CENT PER-CENT PER-CENT 2284200200042 5.16 0.87 2.89 0.25 2.58 0.012284200200043 0.67 3.66 0.1 2.3 0.39 2.752284200200044 0.01 0.30 0.01 2284200200045 ENDCOMMON 9 0 2284200200046 DATA 5 1 2284200200047 EN-DUMMY DATA ERR-T MONIT MONIT-ERR 2284200200048 EV B B B B 2284200200049 0.0253 39.5 2.3 13.3 0.1 2284200200050 ENDDATA 3 0 2284200200051 ENDSUBENT 50 0 2284200299999 SUBENT 22842003 20130112 22342284200300001 BIB 6 35 2284200300002 REACTION (74-W-186(N,G)74-W-187,,RI) 2284200300003 MONITOR (25-MN-55(N,G)25-MN-56,,RI) 2284200300004 DECAY-MON (25-MN-56,2.5789HR,DG,846.75,0.983) 2284200300005 ERR-ANALYS (ERR-T) Total uncertainty includes the square root of 2284200300006 the DATA-ERR1 + DATA-ERR2 + MONIT-ERR 2284200300007 (DATA-ERR1) Total error as the square root of the 2284200300008 quadratic sum of all its constituents 2284200300009 (ERR-1) Error of cadmium ratio for 186-W 2284200300010 (ERR-2) Error of the epithermal neutron self-shielding2284200300011 factor for 186-W 2284200300012 (ERR-3) Error of the 186W thermal neutron self- 2284200300013 shielding factor 2284200300014 (ERR-4) Error of the 186W reference thermal neutrons 2284200300015 cross section 2284200300016 (ERR-5) Error of the 186W cadmium correction factor 2284200300017 (ERR-6,,0.05) Max error of the 186W g-Westcott factor 2284200300018 (ERR-7) Error of the epithermal neutrons energy- 2284200300019 dependence shape parameter 2284200300020 --Another set of uncertainties: 2284200300021 (DATA-ERR2) Total error in Mn-55 cross 2284200300022 section includes: 2284200300023 (ERR-8) Error of cadmium ratio for 55-Mn 2284200300024 (ERR-9) Error of the epithermal neutron self-shielding2284200300025 factor for 55-Mn 2284200300026 (ERR-10) Error of the 55Mn thermal neutron self- 2284200300027 shielding factor 2284200300028 (ERR-11) Error of the 55-Mn reference thermal sigma 2284200300029 (ERR-12) Error of the 55Mn monitor resonance integral 2284200300030 (ERR-13,,0.05) Max error of the 55Mn g-Westcott factor 2284200300031 (ERR-14) Error of the epithermal neutrons energy- 2284200300032 dependence shape parameter 2284200300033 (MONIT-ERR) Total error of the reference resonance 2284200300034 integral 2284200300035 STATUS (TABLE) .From table 5 of ANE,31,1285 2284200300036 HISTORY (20130112A) SD: ERR-ANALYS was corrected. 2284200300037 ENDBIB 35 0 2284200300038 COMMON 14 9 2284200300039 DATA-ERR1 DATA-ERR2 ERR-1 ERR-2 ERR-3 ERR-4 2284200300040 ERR-5 ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 2284200300041 ERR-12 ERR-14 2284200300042 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2284200300043 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2284200300044 PER-CENT PER-CENT 2284200300045 6.25 5.23 1.83 2.5 0.1 1.582284200300046 2.3 4.66 1.6 0.2 0.01 0.752284200300047 2.14 4.43 2284200300048 ENDCOMMON 9 0 2284200300049 DATA 5 1 2284200300050 EN-MIN DATA ERR-T MONIT MONIT-ERR 2284200300051 EV B B B B 2284200300052 0.55 493. 40. 14. 0.3 2284200300053 ENDDATA 3 0 2284200300054 ENDSUBENT 53 0 2284200399999 ENDENTRY 3 0 2284299999999