ENTRY 13524 20181203 14451352400000001 SUBENT 13524001 20181203 14451352400100001 BIB 14 39 1352400100002 INSTITUTE (1USAWIS) 1352400100003 REFERENCE (J,NSE,109,319,1991) 1352400100004 (C,91JUELIC,,589,1991) 1352400100005 AUTHOR (C.L.Hartmann,P.M.De Luca jr) 1352400100006 TITLE Measurement of the 19F(n,2n)18F cross section from 18 1352400100007 to 27 MeV 1352400100008 FACILITY (VDGT,1USAWIS) 1352400100009 INC-SOURCE (D-T) 1352400100010 SAMPLE 20 gram (C2F4)n sample, 6.35-mm thick. 1352400100011 METHOD (ACTIV) 1352400100012 DETECTOR (GELI) For detection of annihilation radiation 1352400100013 (SCIN) NE-102 plastic scintillator for monitoring 1352400100014 neutron flux 1352400100015 DECAY-DATA (9-F-18,,AR) Half-life and branching ratio taken from 1352400100016 table of radioactive isotopes (1986) 1352400100017 CORRECTION Corrected for: 1352400100018 - self-absorption 1352400100019 - Fluence variations due to differing sample distance 1352400100020 and attenuation 1352400100021 - contribution of 11C from the 12C(n,2n) reaction to 1352400100022 the beta+ activity of the sample 1352400100023 - activation from contaminating D-D neutrons which 1352400100024 produces neutrons above the gold activation 1352400100025 threshold at 25 MeV and above the thresholds for 1352400100026 all 3 reactions at 27 MeV. (corrected by determining1352400100027 excess gold activity at 25 MeV - gold cross section 1352400100028 taken as 352+-17 mb.) 1352400100029 ERR-ANALYS (ERR-T) Includes contributions from uncertainty in: 1352400100030 (ERR-S,2.,5.) activity of sample (2-5%) 1352400100031 (ERR-1,1.,2.) ratio to standard (1-2%) 1352400100032 (ERR-2,4.,5.) standard cross section (4-5%) 1352400100033 (ERR-3,1.,2.) absorption correction factor (1-2%) 1352400100034 STATUS (TABLE) Corrected data taken from private comm., 1352400100035 C.Hartmann, 92/1/16. 1352400100036 (APRVD) C.Hartmann, 92/1/24 1352400100037 HISTORY (19911115C) 1352400100038 (20181202U) OS. 2nd ref.added, ERR-ANALYS updated, 1352400100039 several minor BIB corrections, converted to lower and 1352400100040 upper case 1352400100041 ENDBIB 39 0 1352400100042 NOCOMMON 0 0 1352400100043 ENDSUBENT 42 0 1352400199999 SUBENT 13524002 20181203 14451352400200001 BIB 4 5 1352400200002 REACTION (9-F-19(N,2N)9-F-18,,SIG) 1352400200003 MONITOR (79-AU-197(N,2N)79-AU-196,,SIG) 1352400200004 DECAY-MON (79-AU-198,,DG,333./356.) Half-lives and branching 1352400200005 ratios taken from table of radioactive isotopes (1986)1352400200006 STATUS (COREL,13524003) Data from Zr(n,x)89Zr monitor 1352400200007 ENDBIB 5 0 1352400200008 NOCOMMON 0 0 1352400200009 DATA 6 2 1352400200010 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1352400200011 MEV MEV MB MB MB MB 1352400200012 18.1 0.2 85.4 5.0 1729. 86. 1352400200013 21.0 0.1 88.7 9.3 870. 45. 1352400200014 ENDDATA 4 0 1352400200015 ENDSUBENT 14 0 1352400299999 SUBENT 13524003 20181203 14451352400300001 BIB 4 5 1352400300002 REACTION (9-F-19(N,2N)9-F-18,,SIG) 1352400300003 MONITOR (40-ZR-0(N,X)40-ZR-89,,SIG) 1352400300004 DECAY-MON (40-ZR-89,,DG,909.) Half-lives and branching 1352400300005 ratios taken from table of radioactive isotopes (1986)1352400300006 STATUS (COREL,13524002) Data from 197Au(n,2n)196Au monitor 1352400300007 ENDBIB 5 0 1352400300008 NOCOMMON 0 0 1352400300009 DATA 6 5 1352400300010 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1352400300011 MEV MEV MB MB MB MB 1352400300012 18.1 0.2 80.1 4.5 581. 23. 1352400300013 21.0 0.1 82.8 4.5 613. 26. 1352400300014 23.0 0.1 72.7 4.2 603. 26. 1352400300015 25.0 0.1 57.2 2.9 563. 24. 1352400300016 27.0 0.1 51.4 4.7 480. 21. 1352400300017 ENDDATA 7 0 1352400300018 ENDSUBENT 17 0 1352400399999 ENDENTRY 3 0 1352499999999