ENTRY 20734 20101112 22252073400000001 SUBENT 20734001 20101112 22252073400100001 BIB 16 54 2073400100002 INSTITUTE (2ZZZISP) 2073400100003 REFERENCE (J,NSE,40,331,1970) Renormalization of the experimental2073400100004 data reported in ref., NSE,29(1967)7. + new 2073400100005 measurement of U-238(n,f) 2073400100006 (J,NSE,29,7,196703) preliminary data 2073400100007 AUTHOR (A.M.Bresesti,M.Bresesti,A.Rota,R.A.Rydin,L.Lesca) 2073400100008 TITLE -Threshold reaction excitation functions inter- 2073400100009 calibrated in a pure fission spectrum.- 2073400100010 FACILITY (REAC,2ZZZISP) ISPRA-1 reactor, beam port 12CH1 2073400100011 INC-SOURCE .U-235(n,f). thermal neutrons from graphite thermal 2073400100012 column of reactor impinging on 8 cm dia * 1.8 mm 2073400100013 thick disk of 89.7% enriched 20.6% U-Al-alloy. 2073400100014 INC-SPECT Fission neutrons. 2073400100015 SAMPLE .Magnesium oxide powder in a small cylindrical Al 2073400100016 capsule with nickel monitor wires fixed to the 2073400100017 surface. All other samples were metallic disks, 1cm 2073400100018 diam., and thickness between 0.1 and 1.0 mm. All 2073400100019 products were spectroscopically pure and supplied by 2073400100020 Johnson, Matthey and Co. 2073400100021 METHOD (ACTIV) Activation. Samples irradiated for a period of 2073400100022 of 2 hours to 7 days. Activations measured using a 2073400100023 Na-I crystal and the curves for the total efficiency 2073400100024 and the photopeak to total efficiency ratio of 2073400100025 R.L.Heath, Scintillation Spectroscopy Gamma-ray 2073400100026 Spectrum Catalogue, IDOo-16880-1, Phillips Petroleum 2073400100027 Company (1964). 2073400100028 DETECTOR (NAICR) 3*3 in*in Na-I(Tl) crystal with a 0.2 mm thick 2073400100029 Be window (Harshaw integral line). 2073400100030 ANALYSIS .Data are taken at various distances from converter. 2073400100031 Fitting these data to their analytical dependence of 2073400100032 the distance yields the activity. 2073400100033 COMMENT .In Nucl.Sci.Eng.,40(1970)331, calculated values of 2073400100034 fission spectrum averaged cross section based in 2073400100035 Watt,Frye and Maxwellian formulas are also given. 2073400100036 STATUS (NDD ) Data taken from NEUDADA == 2073400100037 Table II of J,NSE,40,331,1970 2073400100038 CORRECTION .Corrections for photopeak attenuation due to self- 2073400100039 absorption and summing coincidences 2073400100040 .Monte Carlo calculation of the distortion of the 2073400100041 fission neutron spectrum by backscattering from the 2073400100042 walls and other materials present near the converter. 2073400100043 ERR-ANALYS (ERR-T) uncertainty includes: 2073400100044 (ERR-S) 2% error from the curve fitting (statistics 2073400100045 +errors in the position of the samples) 2073400100046 (ERR-SYS) 3% systematic errors. 2073400100047 Compounded to a total error of 3.5% 2073400100048 HISTORY (19770430C) 2073400100049 (19780307E) 2073400100050 (19800116A) Revised text, G.C. 2073400100051 (19800129E) 2073400100052 (20101112A) SD:Updated to new date formats,lower case. 2073400100053 corrected according to last EXFOR rules and Dict. 2073400100054 Code SUM deleted from REACTION (Subents 002,003,007)2073400100055 MONITOR moved to Subents. 2073400100056 ENDBIB 54 0 2073400100057 COMMON 3 3 2073400100058 EN-DUMMY ERR-SYS ERR-S 2073400100059 MEV PER-CENT PER-CENT 2073400100060 1.5 3. 2. 2073400100061 ENDCOMMON 3 0 2073400100062 ENDSUBENT 61 0 2073400199999 SUBENT 20734002 20101112 22252073400200001 BIB 6 10 2073400200002 REACTION (12-MG-24(N,P)11-NA-24,,SIG,,FIS) 2073400200003 DECAY-DATA (11-NA-24-G,15.0HR,DG,1368.,1.0) 2073400200004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) The 2073400200005 measurements are relative to 28-Ni-58(n,p)27-Co-58 2073400200006 and are normalized to the 13-Al-27(n,a) cross section 2073400200007 COMMENT .Value for the building of the ground state and 2073400200008 for part of the metastable state (internal 2073400200009 transition) which decays to the ground state. 2073400200010 STATUS (TABLE) Data taken from Table II of J,NSE,40,331,1970 2073400200011 HISTORY (19770413C) 2073400200012 ENDBIB 10 0 2073400200013 NOCOMMON 0 0 2073400200014 DATA 4 1 2073400200015 DATA ERR-T MONIT MONIT-ERR 2073400200016 MB MB MB MB 2073400200017 1.4400E+00 5.0000E-02 6.9500E-01 2.0000E-02 2073400200018 ENDDATA 3 0 2073400200019 ENDSUBENT 18 0 2073400299999 SUBENT 20734003 20101112 22252073400300001 BIB 4 6 2073400300002 REACTION (22-TI-46(N,P)21-SC-46,,SIG,,FIS) 2073400300003 DECAY-DATA (21-SC-46-G,84.0D,DG,1119.,1.0) 2073400300004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) 2073400300005 .Relative to 0.61 mb of Al-27(n,a) reaction 2073400300006 without any normalization. 2073400300007 STATUS (TABLE) Data taken from Table II of J,NSE,29,7,1967 2073400300008 ENDBIB 6 0 2073400300009 NOCOMMON 0 0 2073400300010 DATA 3 1 2073400300011 DATA ERR-T MONIT 2073400300012 MB MB MB 2073400300013 1.0200E+01 4.0000E-01 0.61 2073400300014 ENDDATA 3 0 2073400300015 ENDSUBENT 14 0 2073400399999 SUBENT 20734004 20101112 22252073400400001 BIB 4 8 2073400400002 REACTION (26-FE-54(N,P)25-MN-54,,SIG,,FIS) 2073400400003 DECAY-DATA (25-MN-54,313.0D,DG,83.5,1.0) 2073400400004 Half-life of 54Mn is 313 days in NSE,40,331,1970, 2073400400005 and 303 days in J,NSE,29,7,1967 2073400400006 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) The 2073400400007 measurements are relative to 28-Ni-58(n,p)27-Co-58 2073400400008 and are normalized to the 13-Al-27(n,a) cross section 2073400400009 STATUS (TABLE) Data taken from Table II of J,NSE,40,331,1970 2073400400010 ENDBIB 8 0 2073400400011 NOCOMMON 0 0 2073400400012 DATA 4 1 2073400400013 DATA ERR-T MONIT MONIT-ERR 2073400400014 MB MB MB MB 2073400400015 7.6500E+01 3.0000E+00 6.9500E-01 2.0000E-02 2073400400016 ENDDATA 3 0 2073400400017 ENDSUBENT 16 0 2073400499999 SUBENT 20734005 20101112 22252073400500001 BIB 4 6 2073400500002 REACTION (26-FE-56(N,P)25-MN-56,,SIG,,FIS) 2073400500003 DECAY-DATA (25-MN-56,2.58HR,DG,845.,0.99) 2073400500004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) The 2073400500005 measurements are relative to 28-Ni-58(n,p)27-Co-58 2073400500006 and are normalized to the 13-Al-27(n,a) cross section 2073400500007 STATUS (TABLE) Data taken from Table II of J,NSE,40,331,1970 2073400500008 ENDBIB 6 0 2073400500009 NOCOMMON 0 0 2073400500010 DATA 4 1 2073400500011 DATA ERR-T MONIT MONIT-ERR 2073400500012 MB MB MB MB 2073400500013 1.0600E+00 4.0000E-02 6.9500E-01 2.0000E-02 2073400500014 ENDDATA 3 0 2073400500015 ENDSUBENT 14 0 2073400599999 SUBENT 20734006 20101112 22252073400600001 BIB 4 6 2073400600002 REACTION (27-CO-59(N,A)25-MN-56,,SIG,,FIS) 2073400600003 DECAY-DATA (25-MN-56,2.58HR,DG,845.,0.99) 2073400600004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) The 2073400600005 measurements are relative to 28-Ni-58(n,p)27-Co-58 2073400600006 and are normalized to the 13-Al-27(n,a) cross section 2073400600007 STATUS (TABLE) Data taken from Table II of J,NSE,40,331,1970 2073400600008 ENDBIB 6 0 2073400600009 NOCOMMON 0 0 2073400600010 DATA 4 1 2073400600011 DATA ERR-T MONIT MONIT-ERR 2073400600012 MB MB MB MB 2073400600013 1.4700E-01 5.0000E-03 6.9500E-01 2.0000E-02 2073400600014 ENDDATA 3 0 2073400600015 ENDSUBENT 14 0 2073400699999 SUBENT 20734007 20101112 22252073400700001 BIB 5 8 2073400700002 REACTION (28-NI-58(N,P)27-CO-58,,SIG,,FIS) 2073400700003 DECAY-DATA (27-CO-58,71.3D,DG,810./860.,1.01) 2073400700004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) The 2073400700005 measurements are relative to 28-Ni-58(n,p)27-Co-58 2073400700006 and are normalized to the 13-Al-27(n,a) cross section 2073400700007 COMMENT .Value for the building of the ground and metastable 2073400700008 state (internal transition = 100%). 2073400700009 STATUS (TABLE) Data taken from Table II of J,NSE,40,331,1970 2073400700010 ENDBIB 8 0 2073400700011 NOCOMMON 0 0 2073400700012 DATA 4 1 2073400700013 DATA ERR-T MONIT MONIT-ERR 2073400700014 MB MB MB MB 2073400700015 1.0450E+02 4.0000E+00 6.9500E-01 2.0000E-02 2073400700016 ENDDATA 3 0 2073400700017 ENDSUBENT 16 0 2073400799999 SUBENT 20734008 20101112 22252073400800001 BIB 5 8 2073400800002 REACTION (28-NI-58(N,P)27-CO-58-M,,SIG,,FIS) 2073400800003 DECAY-DATA (27-CO-58-M,9.0HR,DG) 2073400800004 (27-CO-58-G,71.3D,DG,810./860.,1.01) 2073400800005 RAD-DET (27-CO-58-G,DG) 2073400800006 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) 2073400800007 .Relative to 0.61 mb of Al-27(n,a) reaction 2073400800008 without any normalization. 2073400800009 STATUS (TABLE) Data taken from Table II of J,NSE,29,7,1967 2073400800010 ENDBIB 8 0 2073400800011 NOCOMMON 0 0 2073400800012 DATA 3 1 2073400800013 DATA ERR-T MONIT 2073400800014 MB MB MB 2073400800015 2.9500E+01 1.0000E+00 0.61 2073400800016 ENDDATA 3 0 2073400800017 ENDSUBENT 16 0 2073400899999 SUBENT 20734009 20101112 22252073400900001 BIB 4 6 2073400900002 REACTION (42-MO-92(N,P)41-NB-92-M,,SIG,,FIS) 2073400900003 DECAY-DATA (41-NB-92-M,10.1D,DG,930./900.,0.99) 2073400900004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) 2073400900005 .Relative to 0.61 mb of Al-27(n,a) reaction 2073400900006 without any normalization. 2073400900007 STATUS (TABLE) Data taken from Table II of J,NSE,29,7,1967 2073400900008 ENDBIB 6 0 2073400900009 NOCOMMON 0 0 2073400900010 DATA 3 1 2073400900011 DATA ERR-T MONIT 2073400900012 MB MB MB 2073400900013 5.7500E+00 2.5000E-01 0.61 2073400900014 ENDDATA 3 0 2073400900015 ENDSUBENT 14 0 2073400999999 SUBENT 20734010 20101112 22252073401000001 BIB 4 6 2073401000002 REACTION (49-IN-115(N,INL)49-IN-115-M,,SIG,,FIS) 2073401000003 DECAY-DATA (49-IN-115-M,4.5HR,DG,335.,0.46) 2073401000004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) The 2073401000005 measurements are relative to 28-Ni-58(n,p)27-Co-58 2073401000006 and are normalized to the 13-Al-27(n,a) cross section 2073401000007 STATUS (TABLE) Data taken from Table II of J,NSE,40,331,1970 2073401000008 ENDBIB 6 0 2073401000009 NOCOMMON 0 0 2073401000010 DATA 4 1 2073401000011 DATA ERR-T MONIT MONIT-ERR 2073401000012 MB MB MB MB 2073401000013 1.7700E+02 6.0000E+00 6.9500E-01 2.0000E-02 2073401000014 ENDDATA 3 0 2073401000015 ENDSUBENT 14 0 2073401099999 SUBENT 20734011 20101112 22252073401100001 BIB 3 6 2073401100002 REACTION (92-U-238(N,F),,SIG,,FIS) Fission spectrum average2073401100003 cross section. 2073401100004 MONITOR (13-AL-27(N,A)11-NA-24,,SIG,,FIS) The 2073401100005 measurements are relative to 28-Ni-58(n,p)27-Co-58 2073401100006 and are normalized to the 13-Al-27(n,a) cross section 2073401100007 STATUS (TABLE) Data taken from Table II of J,NSE,40,331,1970 2073401100008 ENDBIB 6 0 2073401100009 NOCOMMON 0 0 2073401100010 DATA 4 1 2073401100011 DATA ERR-T MONIT MONIT-ERR 2073401100012 MB MB MB MB 2073401100013 3.0800E+02 1.5000E+01 6.9500E-01 2.0000E-02 2073401100014 ENDDATA 3 0 2073401100015 ENDSUBENT 14 0 2073401199999 ENDENTRY 11 0 2073499999999