ENTRY 20828 20230515 2082800000001 SUBENT 20828001 20230515 20231011 2082800100001 BIB 13 45 2082800100002 TITLE Resonance analysis of neutron transmission 2082800100003 measurements on natural iron samples 2082800100004 AUTHOR (M.C.Moxon,J.B.Brisland) 2082800100005 INSTITUTE (2UK HAR) AERE Harwell 2082800100006 REFERENCE ((P,INDC(UK)-30,47(2),1978)= 2082800100007 (P,NEANDC(E)-192,(8),47(2),1978)) Analysis and table 2082800100008 (C,77GEEL,,689,1977) reson.param., same data 2082800100009 FACILITY (LINAC,2UK HAR) 45 MeV linac 2082800100010 (SYNCY,2UK HAR) synchrocyclotron 2082800100011 SAMPLE Natural iron. For details see transmission data. 2082800100012 METHOD (TOF) 2082800100013 Least squares fitting with an R-matrix representation 2082800100014 of the cross section 2082800100015 ANALYSIS R-matrix. For narrow resonances the background 2082800100016 taken from an interpolation from fits to adjacent 2082800100017 wide resonances. 2082800100018 Parameters of S-wave resonances up to 500keV were 2082800100019 fits leaving out regions around smaller resonances. 2082800100020 P-wave resonances, and finally resonances with width 2082800100021 less than the resolution function were fitted. 2082800100022 Some spins were deduced from fitted parameters. 2082800100023 Adjustment of r(infinity) was included in S-wave 2082800100024 region, but with a large covariance with the 2082800100025 normalization. 2082800100026 For linac data only three resonances were seen. The 2082800100027 energy and neutron width of the first bound level in 2082800100028 Fe-56 were deduced from data between 3eV and 3keV. 2082800100029 CORRECTION .Synchrocyclotron data 2082800100030 background correction in energy range 70-300keV 2082800100031 Re-normalization that decreased with increasing 2082800100032 neutron energy 2082800100033 ERR-ANALYS Uncertainty on the flight path and zero time gave 2082800100034 an accuracy on energies of 1 in 10*4. 2082800100035 The uncertainty on the neutron width due to 2082800100036 covariance terms is between one and two times the 2082800100037 statistical error. 2082800100038 (ERR-S) Errors quoted are only statistical, one sigma. 2082800100039 COMMENT Synchrocyclotron measurements on 2 mm and 2082800100040 60 mm samples will be included in final analysis. 2082800100041 STATUS (TABLE) Tbl.1 from INDC(UK)-30,47(2),1978 2082800100042 HISTORY (19790116C) 2082800100043 (20190314A) SD:Updated to new date formats,lower case. 2082800100044 Ref. updated. Small corrections in all Subents. 2082800100045 Subents 003,004 merged. 2082800100046 (20230515A) SD: Correction in Subent 003. 2082800100047 ENDBIB 45 0 2082800100048 NOCOMMON 0 0 2082800100049 ENDSUBENT 48 0 2082800199999 SUBENT 20828002 20190314 22782082800200001 BIB 2 3 2082800200002 REACTION (26-FE-54(N,TOT),,WID) 2082800200003 HISTORY (20190314U) SD: Data presentation updated according 2082800200004 to the table. DATA-ERR -> ERR-S. 2082800200005 ENDBIB 3 0 2082800200006 COMMON 3 3 2082800200007 MOMENTUM L SPIN J PARITY 2082800200008 NO-DIM NO-DIM NO-DIM 2082800200009 0.0 0.5 1. 2082800200010 ENDCOMMON 3 0 2082800200011 DATA 4 4 2082800200012 EN-RES EN-RES-ERR DATA ERR-S 2082800200013 KEV KEV KEV KEV 2082800200014 7.7817 0.0093 1.096 0.020 2082800200015 52.8713 0.025 2.319 0.121 2082800200016 71.8767 0.019 1.763 0.067 2082800200017 98.7106 0.077 0.5855 0.088 2082800200018 ENDDATA 6 0 2082800200019 ENDSUBENT 18 0 2082800299999 SUBENT 20828003 20230515 20231011 2082800300001 BIB 3 7 2082800300002 REACTION (26-FE-56(N,TOT),,WID) 2082800300003 STATUS (TABLE) Tbl.1 from INDC(UK)-30,47(2),1978 2082800300004 HISTORY (20190314A) SD: Data presentation updated according 2082800300005 to the table. DATA-ERR -> ERR-S. Data from Subent 004 2082800300006 added. 2082800300007 (20230515A) SD: COMMON section deleted (values 2082800300008 presented in DATA section). 2082800300009 ENDBIB 7 0 2082800300010 NOCOMMON 0 0 2082800300011 DATA 7 32 2082800300012 EN-RES EN-RES-ERR MOMENTUM L SPIN J PARITY DATA 2082800300013 ERR-S 2082800300014 KEV KEV NO-DIM NO-DIM NO-DIM KEV 2082800300015 KEV 2082800300016 -3.4756 0.384 0. 0.5 1. 0.5522082800300017 0.075 2082800300018 1.1474 0.00045 1. 0.5 -1. 5.0E-052082800300019 0.4E-05 2082800300020 27.8294 0.026 0. 0.5 1. 1.4742082800300021 0.017 2082800300022 46.0172 0.0083 1. 0.5 -1. 0.005942082800300023 0.00080 2082800300024 52.1065 0.0081 1. 1.5 -1. 0.01442082800300025 0.00075 2082800300026 53.5311 0.013 1. 0.5 -1. 0.001352082800300027 0.00052 2082800300028 55.4927 0.015 1. 0.5 -1. 0.000842082800300029 0.00028 2082800300030 59.1846 0.0084 1. 1.5 -1. 0.004382082800300031 0.00050 2082800300032 73.9599 0.0082 0. 0.5 1. 0.61782082800300033 0.0045 2082800300034 80.7432 0.0028 1. 0.5 -1. 0.02482082800300035 0.0011 2082800300036 83.5205 0.012 0. 0.5 1. 1.2112082800300037 0.017 2082800300038 90.2379 0.018 1. 1.5 -1. 0.02262082800300039 0.0014 2082800300040 96.2194 0.011 1. 0.5 -1. 0.01782082800300041 0.0016 2082800300042 96.5117 0.018 1. 1.5 -1. 0.00262082800300043 0.00089 2082800300044 102.570 0.013 1. 0.5 -1. 0.02942082800300045 0.0017 2082800300046 112.581 0.016 1. 0.5 -1. 0.01612082800300047 0.0018 2082800300048 122.651 0.0083 1. 0.5 -1. 0.09372082800300049 0.0024 2082800300050 124.054 0.023 1. 1.5 -1. 0.00502082800300051 0.0011 2082800300052 124.984 0.0078 1. 0.5 -1. 0.02582082800300053 0.0017 2082800300054 129.685 0.011 0. 0.5 1. 0.60002082800300055 0.0088 2082800300056 140.305 0.021 0. 0.5 1. 2.7042082800300057 0.028 2082800300058 169.044 0.013 0. 0.5 1. 0.91882082800300059 0.017 2082800300060 173.449 0.021 1. 0.5 -1. 0.06752082800300061 0.0054 2082800300062 179.472 0.025 1. 1.5 -1. 0.01542082800300063 0.0018 2082800300064 180.904 0.014 1. 0.5 -1. 0.08392082800300065 0.0039 2082800300066 187.490 0.022 0. 0.5 1. 3.5612082800300067 0.059 2082800300068 192.686 0.029 1. 1.5 -1. 0.02822082800300069 0.0053 2082800300070 195.465 0.041 1. 0.5 -1. 0.07572082800300071 0.0065 2082800300072 201.266 0.033 1. 1.5 -1. 0.03672082800300073 0.0034 2082800300074 207.742 0.061 1. 1.5 -1. 0.01312082800300075 0.0045 2082800300076 220.144 0.0065 0. 0.5 1. 1.2172082800300077 0.014 2082800300078 225.439 0.029 1. 0.5 -1. 0.07222082800300079 0.0050 2082800300080 ENDDATA 68 0 2082800300081 ENDSUBENT 80 0 2082800399999 NOSUBENT 20828004 20190323 22782082800400001 SUBENT 20828005 20190314 22782082800500001 BIB 2 2 2082800500002 REACTION (26-FE-57(N,TOT),,WID) 2082800500003 HISTORY (20190314U) SD: DATA-ERR -> ERR-S. 2082800500004 ENDBIB 2 0 2082800500005 COMMON 2 3 2082800500006 MOMENTUM L PARITY 2082800500007 NO-DIM NO-DIM 2082800500008 0.0 1. 2082800500009 ENDCOMMON 3 0 2082800500010 DATA 5 2 2082800500011 EN-RES EN-RES-ERR SPIN J DATA ERR-S 2082800500012 KEV KEV NO-DIM KEV KEV 2082800500013 3.9547 0.0079 0. 0.2126 0.016 2082800500014 6.2227 0.011 1. 0.3683 0.019 2082800500015 ENDDATA 4 0 2082800500016 ENDSUBENT 15 0 2082800599999 ENDENTRY 5 0 2082899999999