ENTRY 20828 20230515 231720828 0 1 SUBENT 20828001 20230515 231720828 1 1 BIB 13 45 20828 1 2 TITLE Resonance analysis of neutron transmission 20828 1 3 measurements on natural iron samples 20828 1 4 AUTHOR (M.C.Moxon,J.B.Brisland) 20828 1 5 INSTITUTE (2UK HAR) AERE Harwell 20828 1 6 REFERENCE ((P,INDC(UK)-30,47(2),1978)= 20828 1 7 (P,NEANDC(E)-192,(8),47(2),1978)) Analysis and table 20828 1 8 (C,77GEEL,,689,1977) reson.param., same data 20828 1 9 FACILITY (LINAC,2UK HAR) 45 MeV linac 20828 1 10 (SYNCY,2UK HAR) synchrocyclotron 20828 1 11 SAMPLE Natural iron. For details see transmission data. 20828 1 12 METHOD (TOF) 20828 1 13 Least squares fitting with an R-matrix representation 20828 1 14 of the cross section 20828 1 15 ANALYSIS R-matrix. For narrow resonances the background 20828 1 16 taken from an interpolation from fits to adjacent 20828 1 17 wide resonances. 20828 1 18 Parameters of S-wave resonances up to 500keV were 20828 1 19 fits leaving out regions around smaller resonances. 20828 1 20 P-wave resonances, and finally resonances with width 20828 1 21 less than the resolution function were fitted. 20828 1 22 Some spins were deduced from fitted parameters. 20828 1 23 Adjustment of r(infinity) was included in S-wave 20828 1 24 region, but with a large covariance with the 20828 1 25 normalization. 20828 1 26 For linac data only three resonances were seen. The 20828 1 27 energy and neutron width of the first bound level in 20828 1 28 Fe-56 were deduced from data between 3eV and 3keV. 20828 1 29 CORRECTION .Synchrocyclotron data 20828 1 30 background correction in energy range 70-300keV 20828 1 31 Re-normalization that decreased with increasing 20828 1 32 neutron energy 20828 1 33 ERR-ANALYS Uncertainty on the flight path and zero time gave 20828 1 34 an accuracy on energies of 1 in 10*4. 20828 1 35 The uncertainty on the neutron width due to 20828 1 36 covariance terms is between one and two times the 20828 1 37 statistical error. 20828 1 38 (ERR-S) Errors quoted are only statistical, one sigma. 20828 1 39 COMMENT Synchrocyclotron measurements on 2 mm and 20828 1 40 60 mm samples will be included in final analysis. 20828 1 41 STATUS (TABLE) Tbl.1 from INDC(UK)-30,47(2),1978 20828 1 42 HISTORY (19790116C) 20828 1 43 (20190314A) SD:Updated to new date formats,lower case. 20828 1 44 Ref. updated. Small corrections in all Subents. 20828 1 45 Subents 003,004 merged. 20828 1 46 (20230515A) SD: Correction in Subent 003. 20828 1 47 ENDBIB 45 0 20828 1 48 NOCOMMON 0 0 20828 1 49 ENDSUBENT 48 0 20828 199999 SUBENT 20828002 20190314 227820828 2 1 BIB 2 3 20828 2 2 REACTION (26-FE-54(N,TOT),,WID) 20828 2 3 HISTORY (20190314U) SD: Data presentation updated according 20828 2 4 to the table. DATA-ERR -> ERR-S. 20828 2 5 ENDBIB 3 0 20828 2 6 COMMON 3 3 20828 2 7 MOMENTUM L SPIN J PARITY 20828 2 8 NO-DIM NO-DIM NO-DIM 20828 2 9 0.0 0.5 1. 20828 2 10 ENDCOMMON 3 0 20828 2 11 DATA 4 4 20828 2 12 EN-RES EN-RES-ERR DATA ERR-S 20828 2 13 KEV KEV KEV KEV 20828 2 14 7.7817 0.0093 1.096 0.020 20828 2 15 52.8713 0.025 2.319 0.121 20828 2 16 71.8767 0.019 1.763 0.067 20828 2 17 98.7106 0.077 0.5855 0.088 20828 2 18 ENDDATA 6 0 20828 2 19 ENDSUBENT 18 0 20828 299999 SUBENT 20828003 20230515 231720828 3 1 BIB 3 7 20828 3 2 REACTION (26-FE-56(N,TOT),,WID) 20828 3 3 STATUS (TABLE) Tbl.1 from INDC(UK)-30,47(2),1978 20828 3 4 HISTORY (20190314A) SD: Data presentation updated according 20828 3 5 to the table. DATA-ERR -> ERR-S. Data from Subent 004 20828 3 6 added. 20828 3 7 (20230515A) SD: COMMON section deleted (values 20828 3 8 presented in DATA section). 20828 3 9 ENDBIB 7 0 20828 3 10 NOCOMMON 0 0 20828 3 11 DATA 7 32 20828 3 12 EN-RES EN-RES-ERR MOMENTUM L SPIN J PARITY DATA 20828 3 13 ERR-S 20828 3 14 KEV KEV NO-DIM NO-DIM NO-DIM KEV 20828 3 15 KEV 20828 3 16 -3.4756 0.384 0. 0.5 1. 0.55220828 3 17 0.075 20828 3 18 1.1474 0.00045 1. 0.5 -1. 5.0E-0520828 3 19 0.4E-05 20828 3 20 27.8294 0.026 0. 0.5 1. 1.47420828 3 21 0.017 20828 3 22 46.0172 0.0083 1. 0.5 -1. 0.0059420828 3 23 0.00080 20828 3 24 52.1065 0.0081 1. 1.5 -1. 0.014420828 3 25 0.00075 20828 3 26 53.5311 0.013 1. 0.5 -1. 0.0013520828 3 27 0.00052 20828 3 28 55.4927 0.015 1. 0.5 -1. 0.0008420828 3 29 0.00028 20828 3 30 59.1846 0.0084 1. 1.5 -1. 0.0043820828 3 31 0.00050 20828 3 32 73.9599 0.0082 0. 0.5 1. 0.617820828 3 33 0.0045 20828 3 34 80.7432 0.0028 1. 0.5 -1. 0.024820828 3 35 0.0011 20828 3 36 83.5205 0.012 0. 0.5 1. 1.21120828 3 37 0.017 20828 3 38 90.2379 0.018 1. 1.5 -1. 0.022620828 3 39 0.0014 20828 3 40 96.2194 0.011 1. 0.5 -1. 0.017820828 3 41 0.0016 20828 3 42 96.5117 0.018 1. 1.5 -1. 0.002620828 3 43 0.00089 20828 3 44 102.570 0.013 1. 0.5 -1. 0.029420828 3 45 0.0017 20828 3 46 112.581 0.016 1. 0.5 -1. 0.016120828 3 47 0.0018 20828 3 48 122.651 0.0083 1. 0.5 -1. 0.093720828 3 49 0.0024 20828 3 50 124.054 0.023 1. 1.5 -1. 0.005020828 3 51 0.0011 20828 3 52 124.984 0.0078 1. 0.5 -1. 0.025820828 3 53 0.0017 20828 3 54 129.685 0.011 0. 0.5 1. 0.600020828 3 55 0.0088 20828 3 56 140.305 0.021 0. 0.5 1. 2.70420828 3 57 0.028 20828 3 58 169.044 0.013 0. 0.5 1. 0.918820828 3 59 0.017 20828 3 60 173.449 0.021 1. 0.5 -1. 0.067520828 3 61 0.0054 20828 3 62 179.472 0.025 1. 1.5 -1. 0.015420828 3 63 0.0018 20828 3 64 180.904 0.014 1. 0.5 -1. 0.083920828 3 65 0.0039 20828 3 66 187.490 0.022 0. 0.5 1. 3.56120828 3 67 0.059 20828 3 68 192.686 0.029 1. 1.5 -1. 0.028220828 3 69 0.0053 20828 3 70 195.465 0.041 1. 0.5 -1. 0.075720828 3 71 0.0065 20828 3 72 201.266 0.033 1. 1.5 -1. 0.036720828 3 73 0.0034 20828 3 74 207.742 0.061 1. 1.5 -1. 0.013120828 3 75 0.0045 20828 3 76 220.144 0.0065 0. 0.5 1. 1.21720828 3 77 0.014 20828 3 78 225.439 0.029 1. 0.5 -1. 0.072220828 3 79 0.0050 20828 3 80 ENDDATA 68 0 20828 3 81 ENDSUBENT 80 0 20828 399999 NOSUBENT 20828004 20190323 227820828 4 1 SUBENT 20828005 20190314 227820828 5 1 BIB 2 2 20828 5 2 REACTION (26-FE-57(N,TOT),,WID) 20828 5 3 HISTORY (20190314U) SD: DATA-ERR -> ERR-S. 20828 5 4 ENDBIB 2 0 20828 5 5 COMMON 2 3 20828 5 6 MOMENTUM L PARITY 20828 5 7 NO-DIM NO-DIM 20828 5 8 0.0 1. 20828 5 9 ENDCOMMON 3 0 20828 5 10 DATA 5 2 20828 5 11 EN-RES EN-RES-ERR SPIN J DATA ERR-S 20828 5 12 KEV KEV NO-DIM KEV KEV 20828 5 13 3.9547 0.0079 0. 0.2126 0.016 20828 5 14 6.2227 0.011 1. 0.3683 0.019 20828 5 15 ENDDATA 4 0 20828 5 16 ENDSUBENT 15 0 20828 599999 ENDENTRY 5 0 2082899999999