ENTRY 12924 20170601 14321292400000001 SUBENT 12924001 20170601 14321292400100001 BIB 14 42 1292400100002 TITLE Application of the dual thin scintillator neutron flux 1292400100003 monitor in a 235U(n,f) cross-section measurement 1292400100004 AUTHOR (M.S.Dias, A.D.Carlson, R.G.Johnson, O.A.Wasson) 1292400100005 INSTITUTE (1USANBS) 1292400100006 REFERENCE (S,IAEA-TECDOC-335,467,1985) Preliminary report 1292400100007 (W,CARLSON,199107) preprint never published 1292400100008 REL-REF (I,,M.S.Dias+,J,NIM,224,532,1984) 1292400100009 Details on the absolute neutron flux detector 1292400100010 FACILITY (LINAC,1USANBS) 200-m station of NBS TOF facility 1292400100011 INC-SOURCE (PHOTO) Linac operated at 720 Hz repetition rate with 1292400100012 30 ns pulse width 1292400100013 METHOD (TOF) Scintillator at 200.765 m and fission chamber 1292400100014 at 69.466 m from the neutron production target 1292400100015 SAMPLE 170.9+/-2.0 mg of 235U 1292400100016 DETECTOR (FISCH) Large parallel-plate ionization fission chamber1292400100017 (SCIN) Dual thin scintillation (DTS) detector 1292400100018 (0.2565 cm thick, 4.70 and 4.90 cm in diam.). 1292400100019 Calibrated by Monte Carlo technique for 1 to 15 MeV, 1292400100020 and also calibrated at 2.44 and 14.0 MeV using 1292400100021 time-correlated associated-particle technique. 1292400100022 INC-SPECT (EN-RSL-FW) Energy bin width (dE/E~10%) 1292400100023 ERR-ANALYS (ERR-T,,,P) Total uncertainty 1292400100024 (ERR-S,,,U) Statistical uncertainty 1292400100025 (ERR-1,,,F) 235U mass+fission fragment absorption(1.2%)1292400100026 (ERR-2,,,F) Extrapolation to zero for fission chamber 1292400100027 pulse-height distribution (0.5%)1292400100028 (ERR-3,,,F) Fission chamber background (0.3%)1292400100029 (ERR-4,,,F) DTS detector background (0.4%)1292400100030 (ERR-5,,,F) Multi. scattering in fission chamber (0.1%)1292400100031 (ERR-6,,,F) DTS detector area defining collimator(0.2%)1292400100032 (ERR-7,,,F) Deadtime correction (0.01%)1292400100033 (ERR-8,,,F) DTS detector calibration (0.7%)1292400100034 (ERR-9,,,P) DTS detector efficiency from uncertainties 1292400100035 in 1H and 12C cross sections, lost 1292400100036 coincidence correction, and bias channel 1292400100037 (ERR-10,,,P) Relative timing between fission chamber 1292400100038 and DTS detector 1292400100039 (ERR-11,,,P) Transmission correction uncertainty 1292400100040 (ERR-SYS,,,P) Total systematic uncertainty 1292400100041 STATUS (APRVD) A.D.Carlson, 1991/07/15, then 2017/06/02. 1292400100042 HISTORY (19910712C) 1292400100043 (20170601A) On. Recompiled. 002 superseded. 003 added. 1292400100044 ENDBIB 42 0 1292400100045 COMMON 8 6 1292400100046 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 1292400100047 ERR-7 ERR-8 1292400100048 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1292400100049 PER-CENT PER-CENT 1292400100050 1.2 0.5 0.3 0.4 0.1 0.2 1292400100051 0.01 0.7 1292400100052 ENDCOMMON 6 0 1292400100053 ENDSUBENT 52 0 1292400199999 SUBENT 12924002 20170601 14321292400200001 BIB 5 7 1292400200002 REACTION (92-U-235(N,F),,SIG) 1292400200003 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 1292400200004 MONIT-REF (,,3,ENDF/B-VI,,1990) 1292400200005 STATUS (TABLE) Data in preprint received by email (1991/7/11) 1292400200006 (SPSDD,12924003) Renormalized to ENDF/B-VII.0 n-p data 1292400200007 HISTORY (19910711R) 1292400200008 (20170601A) On. Superseded by 12924.003. 1292400200009 ENDBIB 7 0 1292400200010 NOCOMMON 0 0 1292400200011 DATA 9 19 1292400200012 EN EN-RSL-FW DATA ERR-S ERR-T ERR-9 1292400200013 ERR-10 ERR-11 ERR-SYS 1292400200014 KEV KEV B PER-CENT PER-CENT PER-CENT 1292400200015 PER-CENT PER-CENT PER-CENT 1292400200016 5985.9 468.4 1.1118 2.39 2.91 0.35 1292400200017 0.28 0.25 1.66 1292400200018 5504.1 495.2 1.0510 2.26 2.82 0.36 1292400200019 0.37 0.26 1.68 1292400200020 5039.6 433.8 1.0794 2.27 2.82 0.35 1292400200021 0.32 0.25 1.67 1292400200022 4602.1 441.3 1.1113 2.10 2.68 0.32 1292400200023 0.34 0.27 1.67 1292400200024 4189.8 383.3 1.1110 2.12 2.68 0.32 1292400200025 0.07 0.34 1.65 1292400200026 3808.4 379.4 1.1477 1.97 2.58 0.32 1292400200027 0.19 0.35 1.66 1292400200028 3454.9 327.8 1.1662 1.91 2.58 0.32 1292400200029 0.52 0.36 1.73 1292400200030 3131.9 318.1 1.2250 1.67 2.41 0.32 1292400200031 0.56 0.32 1.74 1292400200032 2835.8 274.1 1.2464 1.57 2.33 0.31 1292400200033 0.53 0.30 1.72 1292400200034 2567.6 262.3 1.2545 1.40 2.27 0.30 1292400200035 0.72 0.30 1.79 1292400200036 2323.6 225.8 1.2639 1.29 2.16 0.30 1292400200037 0.58 0.29 1.73 1292400200038 2103.8 213.9 1.2877 1.17 2.05 0.32 1292400200039 0.34 0.33 1.68 1292400200040 1904.7 184.3 1.2716 1.12 2.07 0.31 1292400200041 0.57 0.34 1.74 1292400200042 1725.9 173.3 1.2486 1.02 1.97 0.32 1292400200043 0.29 0.38 1.68 1292400200044 1564.5 149.6 1.2419 0.98 1.96 0.34 1292400200045 0.32 0.39 1.69 1292400200046 1419.6 140.0 1.2247 0.92 1.92 0.38 1292400200047 0.16 0.42 1.69 1292400200048 1289.0 121.2 1.1936 0.92 1.95 0.42 1292400200049 0.33 0.41 1.72 1292400200050 1171.9 113.1 1.1938 0.87 1.92 0.47 1292400200051 0.14 0.42 1.71 1292400200052 1066.2 98.2 1.1825 0.90 1.97 0.52 1292400200053 0.27 0.47 1.75 1292400200054 ENDDATA 42 0 1292400200055 ENDSUBENT 54 0 1292400299999 SUBENT 12924003 20170601 14321292400300001 BIB 5 8 1292400300002 REACTION (92-U-235(N,F),,SIG) 1292400300003 MONITOR (1-H-1(N,EL)1-H-1,,SIG) 1292400300004 MONIT-REF (,,3,ENDF/B-VII.0,,2006) 1292400300005 STATUS (TABLE) Data copied from 12924.002 except for cross 1292400300006 sections which were renormalized to ENDF/B-VII.0 1292400300007 total data by A.Carlson and V.Pronyaev and compiled 1292400300008 in GMA input #1025. 1292400300009 HISTORY (20170601C) On 1292400300010 ENDBIB 8 0 1292400300011 NOCOMMON 0 0 1292400300012 DATA 9 19 1292400300013 EN EN-RSL-FW DATA ERR-S ERR-T ERR-9 1292400300014 ERR-10 ERR-11 ERR-SYS 1292400300015 KEV KEV B PER-CENT PER-CENT PER-CENT 1292400300016 PER-CENT PER-CENT PER-CENT 1292400300017 1066.2 98.2 1.1815 0.90 1.97 0.52 1292400300018 0.27 0.47 1.75 1292400300019 1171.9 113.1 1.1916 0.87 1.92 0.47 1292400300020 0.14 0.42 1.71 1292400300021 1289.0 121.2 1.1914 0.92 1.95 0.42 1292400300022 0.33 0.41 1.72 1292400300023 1419.6 140.0 1.2214 0.92 1.92 0.38 1292400300024 0.16 0.42 1.69 1292400300025 1564.5 149.6 1.2387 0.98 1.96 0.34 1292400300026 0.32 0.39 1.69 1292400300027 1725.9 173.3 1.2461 1.02 1.97 0.32 1292400300028 0.29 0.38 1.68 1292400300029 1904.7 184.3 1.2702 1.12 2.07 0.31 1292400300030 0.57 0.34 1.74 1292400300031 2103.8 213.9 1.2864 1.17 2.05 0.32 1292400300032 0.34 0.33 1.68 1292400300033 2323.6 225.8 1.2626 1.29 2.16 0.30 1292400300034 0.58 0.29 1.73 1292400300035 2567.6 262.3 1.2525 1.40 2.27 0.30 1292400300036 0.72 0.30 1.79 1292400300037 2835.8 274.1 1.2438 1.57 2.33 0.31 1292400300038 0.53 0.30 1.72 1292400300039 3131.9 318.1 1.2215 1.67 2.41 0.32 1292400300040 0.56 0.32 1.74 1292400300041 3454.9 327.8 1.1625 1.91 2.58 0.32 1292400300042 0.52 0.36 1.73 1292400300043 3808.4 379.4 1.1431 1.97 2.58 0.32 1292400300044 0.19 0.35 1.66 1292400300045 4189.8 383.3 1.1062 2.12 2.68 0.32 1292400300046 0.07 0.34 1.65 1292400300047 4602.1 441.3 1.1055 2.10 2.68 0.32 1292400300048 0.34 0.27 1.67 1292400300049 5039.6 433.8 1.0733 2.27 2.82 0.35 1292400300050 0.32 0.25 1.67 1292400300051 5504.1 495.2 1.0442 2.26 2.82 0.36 1292400300052 0.37 0.26 1.68 1292400300053 5985.9 468.4 1.1047 2.39 2.91 0.35 1292400300054 0.28 0.25 1.66 1292400300055 ENDDATA 42 0 1292400300056 ENDSUBENT 55 0 1292400399999 ENDENTRY 3 0 1292499999999