ENTRY 21471 20200930 22942147100000001 SUBENT 21471001 20200930 22942147100100001 BIB 12 27 2147100100002 TITLE Thermal neutron fission cross sections of several 2147100100003 isotopes 2147100100004 AUTHOR (J.F.Raffle) 2147100100005 REFERENCE (R,AERE-R-2998,1959) 2147100100006 (R,AERE-NP/R-2104,2,1957) Short descript., prelim.data 2147100100007 (R,NRDC-51,1954) Superseded.(not reachable 13.10.2020) 2147100100008 INSTITUTE (2UK HAR) 2147100100009 FACILITY (REAC,2UK HAR) BEPO reactor. 2147100100010 (SELVE) Slow neutron velocity selector. 2147100100011 INC-SOURCE (REAC) Pile neutrons. 2147100100012 METHOD Fission fragment detection. 2147100100013 DETECTOR (FISCH) 2 Pi fission chamber. 2147100100014 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2200 m/sec value2147100100015 Neutron flux monitored with a thin B-10 gridded 2147100100016 ionization chambers calibrated in a separate 2147100100017 experiment to saturated gold activity in a standard 2147100100018 gold activation foil. 2147100100019 CORRECTION Corrections applied for the monitor source size, 2147100100020 self-absorption and spectral complexity. 2147100100021 ERR-ANALYS One standard deviation, including 2147100100022 (ERR-1) uncertainties in sample mass (about 2%), 2147100100023 (ERR-2) uncertainties in neutron flux (1%), 2147100100024 and counting statistics, combined quadratically. 2147100100025 HISTORY (19800325C) 2147100100026 (19800429E) 2147100100027 (20200930A) SD:Updated to new date formats,lower case. 2147100100028 Corrections in all Subents. 2147100100029 ENDBIB 27 0 2147100100030 COMMON 5 3 2147100100031 EN-NRM MONIT MONIT-ERR ERR-1 ERR-2 2147100100032 EV B B PER-CENT PER-CENT 2147100100033 0.0253 98.7 0.5 2. 1. 2147100100034 ENDCOMMON 3 0 2147100100035 ENDSUBENT 34 0 2147100199999 SUBENT 21471002 20200930 22942147100200001 BIB 6 8 2147100200002 REACTION (92-U-233(N,F),,SIG,,MXW) Avg cross section. 2147100200003 INC-SPECT Maxwellian neutron spectrum at 30 deg C. 2147100200004 SAMPLE Enriched deposit of U-233, 99.51%, painted 2147100200005 as oxide layer on an aluminium foil. 2147100200006 ERR-ANALYS (ERR-T) Total uncertainty 2147100200007 STATUS (TABLE) Text on p.19 of AERE-R-2998 2147100200008 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147100200009 EN-DUMMY=2.53E-02 eV -> KT-K=30 DEG-C 2147100200010 ENDBIB 8 0 2147100200011 NOCOMMON 0 0 2147100200012 DATA 3 1 2147100200013 KT-K DATA ERR-T 2147100200014 DEG-C B B 2147100200015 30. 522. 15. 2147100200016 ENDDATA 3 0 2147100200017 ENDSUBENT 16 0 2147100299999 SUBENT 21471003 20200930 22942147100300001 BIB 5 7 2147100300002 REACTION (92-U-233(N,F),,SIG) 2200 m/sec value. 2147100300003 SAMPLE Enriched U-233, 99.51%, painted as oxide 2147100300004 on an aluminium foil. 2147100300005 ERR-ANALYS (ERR-T) Total uncertainty 2147100300006 (ERR-S) statistical errors 2147100300007 STATUS (TABLE) Text on p.19 of AERE-R-2998 2147100300008 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147100300009 ENDBIB 7 0 2147100300010 NOCOMMON 0 0 2147100300011 DATA 4 1 2147100300012 EN DATA ERR-T ERR-S 2147100300013 EV B B PER-CENT 2147100300014 2.53E-02 515. 15. 3. 2147100300015 ENDDATA 3 0 2147100300016 ENDSUBENT 15 0 2147100399999 SUBENT 21471004 20200930 22942147100400001 BIB 5 7 2147100400002 REACTION (92-U-233(N,F),,SIG,,RTE) Cross section times 2147100400003 square root of energy. 2147100400004 SAMPLE Enriched U-233, 99.51%, painted as oxide 2147100400005 onto aluminium foils. 2147100400006 METHOD (TOF) Time of flight. 2147100400007 STATUS (TABLE) Tbl.2.3-II from AERE-R-2998 2147100400008 HISTORY (20200930U) SD: STATUS updated. 2147100400009 ENDBIB 7 0 2147100400010 NOCOMMON 0 0 2147100400011 DATA 2 6 2147100400012 EN DATA 2147100400013 EV B*RT-EV 2147100400014 0.0172 82.0 2147100400015 0.019 80.5 2147100400016 0.021 84.0 2147100400017 0.0233 81.7 2147100400018 0.026 83.5 2147100400019 0.0292 80.5 2147100400020 ENDDATA 8 0 2147100400021 ENDSUBENT 20 0 2147100499999 SUBENT 21471005 20200930 22942147100500001 BIB 6 8 2147100500002 REACTION (92-U-235(N,F),,SIG,,MXW) Maxwellian avg cross section 2147100500003 INC-SPECT Maxwellian neutron spectrum at 30 deg C. 2147100500004 SAMPLE Enriched U-235, painted as oxide 2147100500005 onto an aluminium foil. 2147100500006 ERR-ANALYS (ERR-T) Total uncertainty 2147100500007 STATUS (TABLE) Text on p.17 of AERE-R-2998 2147100500008 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147100500009 EN-DUMMY=2.53E-02 eV -> KT-K=30 DEG-C 2147100500010 ENDBIB 8 0 2147100500011 NOCOMMON 0 0 2147100500012 DATA 3 1 2147100500013 KT-K DATA ERR-T 2147100500014 DEG-C B B 2147100500015 30. 570. 10. 2147100500016 ENDDATA 3 0 2147100500017 ENDSUBENT 16 0 2147100599999 SUBENT 21471006 20200930 22942147100600001 BIB 5 7 2147100600002 REACTION (92-U-235(N,F),,SIG) 2200 m/sec value. 2147100600003 SAMPLE Enriched U-235, deposited as oxide onto aluminium 2147100600004 foils. 2147100600005 ERR-ANALYS (ERR-T) Total uncertainty 2147100600006 (ERR-S) statistical errors 2147100600007 STATUS (TABLE) Tbl. 1.6-I from AERE-R-2998 2147100600008 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147100600009 ENDBIB 7 0 2147100600010 NOCOMMON 0 0 2147100600011 DATA 4 1 2147100600012 EN DATA ERR-T ERR-S 2147100600013 EV B B PER-CENT 2147100600014 2.53E-02 582. 12. 1.5 2147100600015 ENDDATA 3 0 2147100600016 ENDSUBENT 15 0 2147100699999 SUBENT 21471007 20200930 22942147100700001 BIB 5 5 2147100700002 REACTION (92-U-235(N,F),,SIG,,RTE) 2147100700003 SAMPLE Enriched U-235 as oxide on aluminium foil. 2147100700004 METHOD (TOF) Time of flight. 2147100700005 STATUS (TABLE) Tbl.2.2-VI from AERE-R-2998 2147100700006 HISTORY (20200930U) SD: STATUS updated. 2147100700007 ENDBIB 5 0 2147100700008 NOCOMMON 0 0 2147100700009 DATA 2 6 2147100700010 EN DATA 2147100700011 EV B*RT-EV 2147100700012 0.0194 94.4 2147100700013 0.0214 94.9 2147100700014 0.0238 91.7 2147100700015 0.0266 89.0 2147100700016 0.0301 90.8 2147100700017 0.0341 90.0 2147100700018 ENDDATA 8 0 2147100700019 ENDSUBENT 18 0 2147100799999 SUBENT 21471008 20200930 22942147100800001 BIB 6 7 2147100800002 REACTION (94-PU-239(N,F),,SIG,,MXW) 2147100800003 INC-SPECT Maxwellian neutron spectrum at 30 deg C. 2147100800004 SAMPLE Enriched sample of 99.4% Pu-239. 2147100800005 ERR-ANALYS (ERR-T) Total uncertainty 2147100800006 STATUS (TABLE) Text on p.23 of AERE-R-2998 2147100800007 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147100800008 EN-DUMMY=2.53E-02 eV -> KT-K=30 DEG-C 2147100800009 ENDBIB 7 0 2147100800010 NOCOMMON 0 0 2147100800011 DATA 3 1 2147100800012 KT-K DATA ERR-T 2147100800013 DEG-C B B 2147100800014 30. 739. 20. 2147100800015 ENDDATA 3 0 2147100800016 ENDSUBENT 15 0 2147100899999 SUBENT 21471009 20200930 22942147100900001 BIB 5 5 2147100900002 REACTION (94-PU-239(N,F),,SIG) 2200 m/sec value. 2147100900003 SAMPLE Enriched sample of 99.4% Pu-239. 2147100900004 ERR-ANALYS (ERR-T) Total uncertainty 2147100900005 STATUS (TABLE) Tbl. 1.6-I from AERE-R-2998 2147100900006 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147100900007 ENDBIB 5 0 2147100900008 NOCOMMON 0 0 2147100900009 DATA 3 1 2147100900010 EN DATA ERR-T 2147100900011 EV B B 2147100900012 2.53E-02 704. 20. 2147100900013 ENDDATA 3 0 2147100900014 ENDSUBENT 13 0 2147100999999 SUBENT 21471010 20200930 22942147101000001 BIB 5 5 2147101000002 REACTION (94-PU-239(N,F),,SIG,,RTE) 2147101000003 SAMPLE Enriched Pu-239, 99.4%. 2147101000004 COMMENT Time of flight data from velocity selector. 2147101000005 STATUS (TABLE) From the text on p. 22 of AERE-R-2998 2147101000006 HISTORY (20200930U) SD: STATUS updated. 2147101000007 ENDBIB 5 0 2147101000008 NOCOMMON 0 0 2147101000009 DATA 2 6 2147101000010 EN DATA 2147101000011 EV B*RT-EV 2147101000012 0.0194 112.2 2147101000013 0.0214 109.7 2147101000014 0.0238 113.2 2147101000015 0.0266 112.9 2147101000016 0.0301 109.6 2147101000017 0.0341 113.8 2147101000018 ENDDATA 8 0 2147101000019 ENDSUBENT 18 0 2147101099999 SUBENT 21471011 20200930 22942147101100001 BIB 6 7 2147101100002 REACTION (94-PU-241(N,F),,SIG,,MXW) 2147101100003 INC-SPECT Maxwellian neutron spectrum at 30 deg C. 2147101100004 SAMPLE Enriched plutonium foil. 2147101100005 ERR-ANALYS (ERR-T) Total uncertainty 2147101100006 STATUS (TABLE) From the text on p. 26 of AERE-R-2998 2147101100007 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147101100008 EN-DUMMY=2.53E-02 eV -> KT-K=30 DEG-C 2147101100009 ENDBIB 7 0 2147101100010 NOCOMMON 0 0 2147101100011 DATA 3 1 2147101100012 KT-K DATA ERR-T 2147101100013 DEG-C B B 2147101100014 30. 930. 40. 2147101100015 ENDDATA 3 0 2147101100016 ENDSUBENT 15 0 2147101199999 SUBENT 21471012 20200930 22942147101200001 BIB 6 6 2147101200002 REACTION (94-PU-241(N,F),,SIG) 2147101200003 SAMPLE Enriched plutonium, from B.E.P.O. 2147101200004 COMMENT Time of flight data from velocity selector. 2147101200005 ERR-ANALYS (ERR-T) Total uncertainty 2147101200006 STATUS (TABLE) Tbl. 2.5-V from AERE-R-2998 2147101200007 HISTORY (20200930U) SD: STATUS updated. DATA-ERR -> ERR-T. 2147101200008 ENDBIB 6 0 2147101200009 NOCOMMON 0 0 2147101200010 DATA 3 11 2147101200011 EN DATA ERR-T 2147101200012 EV B B 2147101200013 0.00615 1520. 150. 2147101200014 0.0089 1470. 100. 2147101200015 0.0108 1485. 120. 2147101200016 0.0119 1370. 70. 2147101200017 0.0165 1235. 60. 2147101200018 0.0182 1075. 60. 2147101200019 0.0312 806. 30. 2147101200020 0.0402 775. 60. 2147101200021 0.0630 714. 40. 2147101200022 0.0935 545. 30. 2147101200023 0.0975 610. 60. 2147101200024 ENDDATA 13 0 2147101200025 ENDSUBENT 24 0 2147101299999 ENDENTRY 12 0 2147199999999