ENTRY 31783 20180508 31843178300000001 SUBENT 31783001 20180508 31843178300100001 BIB 16 34 3178300100002 TITLE Measurement of 89Y(n,2n) spectral averaged cross 3178300100003 section in LR-0 special core reactor spectrum 3178300100004 AUTHOR (M.Kostal, E.Losa, P.Baron, J.Solc, M.Svadlenkova, 3178300100005 M.Koleska, M.Marecek, J.Uhlir) 3178300100006 INSTITUTE (3CZRUJV) 3178300100007 REFERENCE (J,RPC,141,22,2017) 3178300100008 (W,KOSTAL,20180228) Latest values tabulated. 3178300100009 Document LR0-RESR-004 submitted to IRPhE in 2018 3178300100010 "VVER-1000 physics experiments hexagonal jattices 3178300100011 (1.275 cm Pitch) of Low Enriched U(3.3 wt.% U235)O2 3178300100012 fuel assemblies in light water 75As(n, 2n), 3178300100013 23Na(n,2n), 90Zr(n,2n), 89Y(n,2n) reaction rates" 3178300100014 received from M.Kostal on 28 February 2018. 3178300100015 REL-REF (N,,M.Kostal+,J,ARI,135,83,2018) 3178300100016 Measured LR-0 neutron spectrum in void case tabulated 3178300100017 FACILITY (REAC,3CZRUJV) LR-0 reactor 3178300100018 INC-SOURCE (REAC) 3178300100019 SAMPLE Y2O3 (202.3 g, 1.8212 g/cm3) melted in an Al capsule 3178300100020 (80 mm diam.). 3178300100021 METHOD (ACTIV) Irradiated for 20 hours 3178300100022 (GSPEC) Measurement started 4 weeks after irradiation 3178300100023 DETECTOR (HPGE) Efficiency calculated by MCNP6 3178300100024 DECAY-DATA (39-Y-88,106.627D,DG,898.0,0.9390, 3178300100025 DG,1836.1,0.9932) 3178300100026 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 3178300100027 (28-NI-58(N,P)27-CO-58,,SIG) 3178300100028 DECAY-MON (79-AU-198-G,2.6947D,DG,411.8,0.9562) 3178300100029 (27-CO-58-G,70.86D,DG,810.8,0.9945) 3178300100030 CORRECTION Corrected for 3178300100031 - the spectral shift (ratio between the full geometry 3178300100032 and empty geomtery). 3178300100033 - coincidence summing effect 3178300100034 STATUS (APRVD) Proof-read by Michal Kostal (2018-05-09) 3178300100035 HISTORY (20180508C) On 3178300100036 ENDBIB 34 0 3178300100037 NOCOMMON 0 0 3178300100038 ENDSUBENT 37 0 3178300199999 SUBENT 31783002 20180508 31843178300200001 BIB 5 9 3178300200002 REACTION (39-Y-89(N,2N)39-Y-88,,SIG,,SPA) 3178300200003 INC-SPECT LR-0 reactor spectrum. 3178300200004 The measured numerical spectrum in void case is in 3178300200005 Table 2 of M.Kostal+,Appl.Radiat.Isot.135(2018)83. 3178300200006 MISC-COL (MISC) Cross section averaged in LR-0 reactor spectrum 3178300200007 above 10 MeV 3178300200008 ERR-ANALYS (DATA-ERR) Total uncertainty (3.3%)3178300200009 STATUS (TABLE) Table 3 of Radiat.Phys.Chem.141(2017)22 3178300200010 (SPSDD,31783004) 3178300200011 ENDBIB 9 0 3178300200012 NOCOMMON 0 0 3178300200013 DATA 4 1 3178300200014 EN-DUMMY DATA DATA-ERR MISC 3178300200015 MEV MICRO-B PER-CENT MB 3178300200016 1. 43.9 3.3 124.9 3178300200017 ENDDATA 3 0 3178300200018 ENDSUBENT 17 0 3178300299999 SUBENT 31783003 20180508 31843178300300001 BIB 5 9 3178300300002 REACTION (39-Y-89(N,2N)39-Y-88,,SIG,,FIS) 3178300300003 INC-SPECT 235U(n,nth) prompt fission neutron spectrum 3178300300004 ANALYSIS Cross section averaged over the LR-0 spectrum above 3178300300005 10 MeV multiplied by the fracion of 235U prompt 3178300300006 fission neutrons above 10 MeV in ENDF/B-VII (0.1396%) 3178300300007 ERR-ANALYS (DATA-ERR) Total uncertainty (3.3%)3178300300008 STATUS (TABLE) Table 3 of Radiat.Phys.Chem.141(2017)22 3178300300009 (DEP,31783002) LR-0 spectrum averaged cross section 3178300300010 (SPSDD,31783005) 3178300300011 ENDBIB 9 0 3178300300012 NOCOMMON 0 0 3178300300013 DATA 3 1 3178300300014 KT-DUMMY DATA DATA-ERR 3178300300015 MEV MB PER-CENT 3178300300016 1.32 0.172 3.3 3178300300017 ENDDATA 3 0 3178300300018 ENDSUBENT 17 0 3178300399999 SUBENT 31783004 20180508 31843178300400001 BIB 5 16 3178300400002 REACTION (39-Y-89(N,2N)39-Y-88,,SIG,,SPA) 3178300400003 INC-SPECT LR-0 reactor spectrum. 3178300400004 The measured numerical spectrum in void case is in 3178300400005 Table 2 of M.Kostal+,Appl.Radiat.Isot.135(2018)83. 3178300400006 MISC-COL (MISC) Cross section averaged in LR-0 reactor spectrum 3178300400007 above 10 MeV 3178300400008 ERR-ANALYS (ERR-T) Total uncertainty (3.2%)3178300400009 (ERR-1) Statistics of 88Y activity (0.6%)3178300400010 (ERR-2) Bias between 88Y 898 and 1836 keV peaks (1.0%)3178300400011 (ERR-3) Target modeling (1.0%)3178300400012 (ERR-4) HPGe efficiency volume source - Y (0.9%)3178300400013 (ERR-5) Statistics of 198Au activity (0.3%)3178300400014 (ERR-6) Statistics of 58Co activity (0.8%)3178300400015 (ERR-7) HPGe efficiency point source - Au,Ni (1.9%)3178300400016 (ERR-8) Bias between Au/Ni based scaling factors (1.7%)3178300400017 STATUS (TABLE) Table 3.7.5.5 of LR0-RESR-004 (2018) 3178300400018 ENDBIB 16 0 3178300400019 COMMON 7 6 3178300400020 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 ERR-7 3178300400021 ERR-8 3178300400022 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3178300400023 PER-CENT 3178300400024 1.0 1.0 0.9 0.3 0.8 1.9 3178300400025 1.7 3178300400026 ENDCOMMON 6 0 3178300400027 DATA 5 1 3178300400028 EN-DUMMY DATA ERR-T ERR-1 MISC 3178300400029 MEV MICRO-B PER-CENT PER-CENT MB 3178300400030 1. 43.54 3.2 0.6 123.8 3178300400031 ENDDATA 3 0 3178300400032 ENDSUBENT 31 0 3178300499999 SUBENT 31783005 20180508 31843178300500001 BIB 5 9 3178300500002 REACTION (39-Y-89(N,2N)39-Y-88,,SIG,,FIS) 3178300500003 INC-SPECT 235U prompt fission neutron spectra 3178300500004 ANALYSIS Cross section averaged over the LR-0 spectrum above 3178300500005 10 MeV multiplied by the fracion of 235U prompt 3178300500006 fission neutrons above 10 MeV in ENDF/B-VII (0.1396%) 3178300500007 ERR-ANALYS (DATA-ERR) Total uncertainty (3.1%) 3178300500008 STATUS (TABLE) Table 3.7.5.5 of LR0-RESR-004 (2018) 3178300500009 (DEP,31783004) LR-0 spectrum averaged cross section 3178300500010 (COREL,31785003) Another result from the same group 3178300500011 ENDBIB 9 0 3178300500012 NOCOMMON 0 0 3178300500013 DATA 3 1 3178300500014 KT-DUMMY DATA DATA-ERR 3178300500015 MEV MB PER-CENT 3178300500016 1.32 0.1708 3.2 3178300500017 ENDDATA 3 0 3178300500018 ENDSUBENT 17 0 3178300599999 ENDENTRY 5 0 3178399999999