ENTRY 21666 20200804 22902166600000001 SUBENT 21666001 20200804 22902166600100001 BIB 14 47 2166600100002 TITLE Determination of the capture width of the 27.7 keV 2166600100003 S-wave neutron resonance in iron-56 2166600100004 AUTHOR (K.Wisshak,F.Kaeppeler) 2166600100005 REFERENCE (J,NSE,77,58,1981) Main reference, final data. 2166600100006 ((P,INDC(GER)-22,5,1980)=(P,NEANDC(E)-212,(5),5,1980)) 2166600100007 res.param. 2166600100008 (P,KFK-2899,1,1979) res.param. 2166600100009 (C,79KNOX,,155,1979) prelim.results 2166600100010 ((P,INDC(EUR)-21,3,1979)=(P,NEANDC(E)-202,(5),3,1979)) 2166600100011 short descript.,res.param. 2166600100012 (P,KFK-2868,21,1979) short descript., res.param. 2166600100013 INSTITUTE (2GERKFK) 2166600100014 FACILITY (VDG,2GERKFK) 3 MV pulsed Van de Graaff accelerator. 2166600100015 INC-SOURCE (P-LI7) The accelerator voltage was adjusted to pro- 2166600100016 duce Li-7(p,n) neutrons only with energies between 2166600100017 10 and 60 keV, all of them emitted into a cone with 2166600100018 60 degrees opening angle. 2166600100019 SAMPLE Three metallic, uncanned disc samples of Fe-56 (99.93%2166600100020 pure in Fe-56) were used. The thicknesses were 2166600100021 0.15, 0.3 and 0.6 mm. 2166600100022 The reference sample was a gold disc, 0.25 mm thick. 2166600100023 METHOD (TOF) Time of flight techniques were used to 2166600100024 distinguish between neutrons and captured photons. 2166600100025 The primary flight path was 7.6 to 8 cm long and 2166600100026 about half as long as the distance between the 2166600100027 sample and the detector. 2166600100028 DETECTOR (MOXR) A Moxon-Rae detector. The detector response 2166600100029 to a pure scatterer was checked with a graphite 2166600100030 sample. 2166600100031 ANALYSIS (SHAPE) The least-squares shape fit analysis code FANAC2166600100032 MONITOR (79-AU-197(N,G)79-AU-198-G+M,,SIG) ENDF/B-IV 2166600100033 gold cross section used for normalization. 2166600100034 CORRECTION .For, 2166600100035 - electronic drift, 2166600100036 - multiple scattering and self-shielding, 2166600100037 - photon self-absorption in the sample, 2166600100038 - deviations from the ideal linear relationship 2166600100039 between Moxon-Rae detector efficiency and excitation2166600100040 energy. 2166600100041 STATUS (TABLE) Table from III of Nucl.Sci.Eng.,77(1981)58 2166600100042 HISTORY (19800911C) CN. 2166600100043 (19810218A) Main ref. included with final data. 2166600100044 (20161001A) SD:Updated to new date formats,lower case. 2166600100045 Refs corrected (brackets were added for issue numb.) 2166600100046 Ref. 79GEEL deleted (never published). 2166600100047 (20200804U) SD: Ref. BAP,24,.. deleted (abstract 2166600100048 presented in 79KNOX,,155,1979). PART-DET deleted. 2166600100049 ENDBIB 47 0 2166600100050 NOCOMMON 0 0 2166600100051 ENDSUBENT 50 0 2166600199999 SUBENT 21666002 20161001 22572166600200001 BIB 4 19 2166600200002 REACTION (26-FE-56(N,G),,WID) 2166600200003 FLAG (1.) This value of the gamma width was obtained 2166600200004 using fixed resonance parameters from Froehner 2166600200005 for the FANAC code. (Table III in NSE,77,58,1981) 2166600200006 (2.) This value of the gamma width was obtained 2166600200007 using fixed resonance parameters form Perey 2166600200008 for the FANAC code. (Table III in NSE,77,58,1981) 2166600200009 ERR-ANALYS (ERR-S) Statistical uncertainty. 2166600200010 (ERR-1) Systematic uncertainty containing contribu- 2166600200011 tions from, flight path transformation, multiple 2166600200012 scattering and gamma-ray self-absorption. 2166600200013 (ERR-2) Background subtraction uncertainty. 2166600200014 (ERR-3) Detector efficiency uncertainty. 2166600200015 (ERR-4) Neutron beam intensity and monitor cross 2166600200016 section uncertainty. 2166600200017 (ERR-5) FANAC code calculation uncertainty. 2166600200018 (ERR-T) Total uncertainty. 2166600200019 HISTORY (20161001A) SD: Units and values of THICKNESS were 2166600200020 changed (data from the text on p.60 of NSE,77,58). 2166600200021 ENDBIB 19 0 2166600200022 COMMON 4 3 2166600200023 MOMENTUM L ERR-3 ERR-4 ERR-5 2166600200024 NO-DIM PER-CENT PER-CENT PER-CENT 2166600200025 0.0 3. 2.5 2. 2166600200026 ENDCOMMON 3 0 2166600200027 DATA 8 6 2166600200028 EN-RES DATA ERR-S ERR-1 ERR-2 ERR-T 2166600200029 FLAG THICKNESS 2166600200030 KEV EV EV PER-CENT PER-CENT PER-CENT 2166600200031 NO-DIM ATOMS/B 2166600200032 27.5 1.012 0.020 2. 0.5 5.32166600200033 2. 5.282E-03 2166600200034 27.5 0.999 0.020 2. 0.5 5.32166600200035 1. 5.282E-03 2166600200036 27.9 1.039 0.027 2.7 1.7 6.12166600200037 2. 1.375E-03 2166600200038 28.0 1.017 0.027 2.7 1.7 6.12166600200039 1. 1.375E-03 2166600200040 28.0 1.028 0.023 2.2 1. 5.52166600200041 2. 2.653E-03 2166600200042 28.0 1.024 0.023 2.2 1. 5.52166600200043 1. 2.653E-03 2166600200044 ENDDATA 16 0 2166600200045 ENDSUBENT 44 0 2166600299999 SUBENT 21666003 20161001 22572166600300001 BIB 4 9 2166600300002 REACTION (26-FE-56(N,G),,WID/STR) 2166600300003 FLAG (1.) Data were obtained using fixed resonance para- 2166600300004 meters from Froehner (Table III in NSE,77,58,1981), 2166600300005 (2.) data were obtained using fixed resonance para- 2166600300006 meters from Perey et al (Table III in NSE,77,58,1981).2166600300007 ERR-ANALYS (ERR-S) Statistical uncertainty. 2166600300008 HISTORY (20161001A) SD: Units and values of THICKNESS were 2166600300009 changed (data from the text on p.60 of NSE,77,58). 2166600300010 SF6=ARE -> WID/STR, SF8=FCT deleted from REACTION code.2166600300011 ENDBIB 9 0 2166600300012 COMMON 1 3 2166600300013 MOMENTUM L 2166600300014 NO-DIM 2166600300015 1. 2166600300016 ENDCOMMON 3 0 2166600300017 DATA 5 24 2166600300018 EN-RES DATA ERR-S FLAG THICKNESS 2166600300019 KEV EV EV NO-DIM ATOMS/B 2166600300020 22.7 0.165 0.014 2. 5.282E-03 2166600300021 22.9 0.166 0.011 1. 5.282E-03 2166600300022 22.9 0.159 0.015 2. 2.653E-03 2166600300023 22.9 0.160 0.011 1. 2.653E-03 2166600300024 23.2 0.149 0.017 2. 1.375E-03 2166600300025 23.2 0.152 0.014 1. 1.375E-03 2166600300026 34.0 0.529 0.025 2. 5.282E-03 2166600300027 34.0 0.519 0.024 1. 5.282E-03 2166600300028 34.5 0.495 0.021 1. 2.653E-03 2166600300029 34.6 0.507 0.023 2. 2.653E-03 2166600300030 34.9 0.564 0.029 1. 1.375E-03 2166600300031 34.9 0.583 0.030 2. 1.375E-03 2166600300032 36.4 0.333 0.025 1. 5.282E-03 2166600300033 36.4 0.352 0.025 2. 5.282E-03 2166600300034 36.8 0.326 0.021 1. 2.653E-03 2166600300035 36.9 0.326 0.022 2. 2.653E-03 2166600300036 36.9 0.299 0.028 1. 1.375E-03 2166600300037 37.1 0.308 0.028 2. 1.375E-03 2166600300038 38.5 0.314 0.026 1. 5.282E-03 2166600300039 38.6 0.300 0.024 2. 5.282E-03 2166600300040 39.0 0.292 0.022 1. 2.653E-03 2166600300041 39.0 0.280 0.022 2. 2.653E-03 2166600300042 39.3 0.357 0.030 1. 1.375E-03 2166600300043 39.5 0.316 0.028 2. 1.375E-03 2166600300044 ENDDATA 26 0 2166600300045 ENDSUBENT 44 0 2166600399999 ENDENTRY 3 0 2166699999999