ENTRY 10424 20030221 00001042400000001 SUBENT 10424001 20030221 00001042400100001 BIB 15 37 1042400100002 INSTITUTE (1CANCRC) 1042400100003 REFERENCE (C,79KNOX,,(DC-9),197910) 1042400100004 AUTHOR (D.C.Santry) 1042400100005 TITLE The 127I(n,2n)126I reaction as a fast neutron flux 1042400100006 monitor 1042400100007 SAMPLE Hexaiodobenzene powder pressed into pellets of 5-mm 1042400100008 diameter and 1-mm thickness. 91.4% iodine. 1042400100009 METHOD (ACTIV) Activation. 1042400100010 (MOMIX) Iodine sample sandwiched between two pellets of1042400100011 sulfur. Flux gradient through pellets determined by 1042400100012 irradiation of known thicknesses and measuring the 1042400100013 specific activity. 1042400100014 Background neutrons determined by measurements made 1042400100015 with hydrogen replacing the deuterium and tritium of 1042400100016 the neutron sources. 1042400100017 DETECTOR (GELI) Germanium lithium gamma ray spectrometer. 1042400100018 (NAICR) Sodium iodide gamma ray spectrometer. 1042400100019 MONITOR (16-S-32(N,P)15-P-32,,SIG) 1042400100020 Detectors calibrated using standard 137Cs source and 1042400100021 32P betas. 1042400100022 DECAY-DATA (53-I-126,12.88D,DG,388.5,0.32,DG,666.2,0.30,B) 1042400100023 DECAY-MON (15-P-32,14.28D,B) 1042400100024 ANALYSIS Data is average of at least three measurements. 1042400100025 CORRECTION Corrected for: 1042400100026 . activity due to background neutrons and neutrons 1042400100027 due to the breakup reaction in the deuterium source,1042400100028 . attenuation in target and target geometry. 1042400100029 ERR-ANALYS (DATA-ERR) No information on source of uncertainties. 1042400100030 Not included are errors due to uncertainty in: 1042400100031 . sulphur measurements (6%), 1042400100032 . gamma abundance of the 126I 666-keV line (20%). 1042400100033 STATUS (APRVD) Approved by D.C. Santry 1980/4/29. 1042400100034 HISTORY (19760628C) 1042400100035 (19800317A) Reference update. BIB additions and 1042400100036 corrections. Converted to REACTION formalism. 1042400100037 (19860620A) BIB update. Redundant COMMON removed. 1042400100038 (20030221A) Converted to new date formats, lower case. 1042400100039 ENDBIB 37 0 1042400100040 NOCOMMON 0 0 1042400100041 ENDSUBENT 40 0 1042400199999 SUBENT 10424002 20030221 00001042400200001 BIB 4 6 1042400200002 REACTION (53-I-127(N,2N)53-I-126,,SIG) 1042400200003 FACILITY (VDGT,1CANCRC) 1042400200004 INC-SOURCE (D-D) 1042400200005 HISTORY (19800317A) BIB corrections. Data replaced. 1042400200006 (19801210U) Reaction product corrected 1042400200007 (20030221A) Neutron generator data moved. 1042400200008 ENDBIB 6 0 1042400200009 NOCOMMON 0 0 1042400200010 DATA 5 8 1042400200011 EN EN-RSL DATA DATA-ERR MONIT 1042400200012 MEV MEV MB MB MB 1042400200013 9.25 0.11 11.6 2.3 366. 1042400200014 9.80 0.11 155. 1.6 383. 1042400200015 10.25 0.11 422. 35. 397. 1042400200016 10.75 0.11 754. 60. 398. 1042400200017 12.5 0.4 1569. 94. 333. 1042400200018 16.2 0.6 1731. 104. 154. 1042400200019 17.8 0.5 1681. 100. 106. 1042400200020 19.6 0.3 1424. 85. 80. 1042400200021 ENDDATA 10 0 1042400200022 ENDSUBENT 21 0 1042400299999 SUBENT 10424003 20030221 00001042400300001 BIB 4 4 1042400300002 REACTION (53-I-127(N,2N)53-I-126,,SIG) 1042400300003 FACILITY (ACCEL,1CANCRC) Texas Nuclear Neutron Generator 1042400300004 INC-SOURCE (D-T) 1042400300005 HISTORY (20030221A) Moved from subentry 2. 1042400300006 ENDBIB 4 0 1042400300007 NOCOMMON 0 0 1042400300008 DATA 5 5 1042400300009 EN EN-RSL DATA DATA-ERR MONIT 1042400300010 MEV MEV MB MB MB 1042400300011 13.58 0.10 1690. 101. 277. 1042400300012 13.89 0.06 1720. 103. 263. 1042400300013 14.24 0.08 1780. 107. 235. 1042400300014 14.50 0.15 1782. 107. 226. 1042400300015 14.76 0.20 1766. 106. 216. 1042400300016 ENDDATA 7 0 1042400300017 ENDSUBENT 16 0 1042400399999 ENDENTRY 3 0 1042499999999