ENTRY 10860 19790315 00001086000000001 SUBENT 10860001 19790315 00001086000100001 BIB 12 26 1086000100002 INSTITUTE (1USAHRV) 1086000100003 REFERENCE (J,PR/C,12,1428,7511) 1086000100004 (J,PR/C,12,1423,7511) EXPERIMENTAL DETAILS 1086000100005 AUTHOR (J.CALLERAME,D.J.LARSON,S.J.LIPSON,R.WILSON) 1086000100006 TITLE CROSS SECTION OF SLOW NEUTRONS ON ORTHODEUTERIUM 1086000100007 FACILITY (REAC,1USAMIT) MIT RESEARCH REACTOR USING DOUBLE BRAGG 1086000100008 REFLECTION FROM PARALLEL PYROLITIC GRAPHITE CRYSTALS. 1086000100009 DETECTOR (PROPC) BF(3) PROPORTIONAL COUNTERS 1086000100010 SAMPLE SAMPLE GAS TYPICALLY 97-PERCENT ORTHO- AND 3-PERCENT 1086000100011 PARA-DEUTERIUM. PRESSURE RANGES FROM 145 TO 300 TORR. 1086000100012 METHOD NEUTRON BEAM COLLIMATED BY 1.6-CM DIAMETER HOLES IN 1086000100013 LITHIUM-LOADED PLASTIC. ATTENUATION MEASURED WITH 1086000100014 3.035-METER LENGTH HELIUM FILLED ALUMINUM TUBE. DUMMY 1086000100015 SAMPLE SWITCHED WITH TARGET APPROX 120 TIMES DURING 1086000100016 RUN. DATA NORMALIZED TO 22.4 DEGREES KELVIN SAMPLE 1086000100017 TEMPERATURE. DATA MEASURED AS FUNCTION OF PRESSURE, 1086000100018 THE AVERAGE VALUE IS GIVEN. 1086000100019 CORRECTION CORRECTED FOR DEAD TIME, BACKGROUND, AL ENDPLATES OF 1086000100020 SAMPLE CONTAINER, DEVIATION FROM IDEAL GAS(SECOND 1086000100021 VIRIAL CORRECTION LESS THAN 5-PERCENT AT 300 TORR) 1086000100022 ERR-ANALYS MAJOR SOURCES OF ERROR INCLUDE STATISTICAL ERRORS AND 1086000100023 UNCERTAINTY IN TARGET DENSITY WHICH EFFECTS VIRIAL 1086000100024 CORRECTION. SYSTEMATIC ERROR DUE TO UNCERTAINTY IN GAS1086000100025 PURITY IS CONSIDERED SMALL. 1086000100026 STATUS (APRVD) APPROVED BY R.WILSON, 79/7/16. 1086000100027 HISTORY (790222C) 1086000100028 ENDBIB 26 0 1086000100029 NOCOMMON 0 0 1086000100030 ENDSUBENT 29 0 1086000199999 SUBENT 10860002 19790315 00001086000200001 BIB 1 1 1086000200002 REACTION (1-H-2(N,TOT),,SIG) FOR ORTHO-DEUTERIUM 1086000200003 ENDBIB 1 0 1086000200004 NOCOMMON 0 0 1086000200005 DATA 3 1 1086000200006 EN DATA DATA-ERR 1086000200007 MILLI-EV B B 1086000200008 4.20 16.80 0.026 1086000200009 ENDDATA 3 0 1086000200010 ENDSUBENT 9 0 1086000299999 ENDENTRY 2 0 1086099999999