ENTRY 10800 20160608 14181080000000001 SUBENT 10800001 20160608 14181080000100001 BIB 11 27 1080000100002 INSTITUTE (1USABNL,1USAHRV) 1080000100003 REFERENCE (J,PRL,26,1581,197106) 1080000100004 AUTHOR (T.L.Houk,D.Shambroom,R.Wilson) 1080000100005 TITLE Cross Section of Slow Neutrons on Parahydrogen 1080000100006 FACILITY (REAC,1USABNL) Brookhaven high flux beam reactor 1080000100007 SAMPLE Hydrogen gas in contact with nickel-silicon gel provid-1080000100008 ing constant ortho-para ratio. Density determined as 1080000100009 ideal gas with second virial correction. 1080000100010 DETECTOR (PROPC) 3He proportional counter for incident beam. 1080000100011 BF3 proportional counter for scattered beam. 1080000100012 METHOD Monochromatic beam of given energy created by Bragg 1080000100013 reflection from graphite crystal. Be polycrystalline 1080000100014 filter used to suppress reflections other than first 1080000100015 order. Transmission through dummy target compared with1080000100016 sample run every 10 min. Background determined with 1080000100017 Cd disk. 1080000100018 CORRECTION Corrected for dead time in electronics and in detector 1080000100019 ERR-ANALYS (DATA-ERR) No complete information on sources of 1080000100020 uncertainty. 1080000100021 (ERR-1) Errors in background determination - 0.1%, 1080000100022 (ERR-2,,0.1)Errors due to wrong energy neutrons <0.1%, 1080000100023 (ERR-3,,0.02) Pulse height change error - <2.0e-04. 1080000100024 HISTORY (19781129C) 1080000100025 (20101023A) VM:Updated to new date formats,lower case. 1080000100026 BIB update. 1080000100027 (20160517A) OS. REACTIONs corrected, ERR-ANALYS and 1080000100028 STATUS updated. 1080000100029 ENDBIB 27 0 1080000100030 COMMON 1 3 1080000100031 ERR-1 1080000100032 PER-CENT 1080000100033 0.1 1080000100034 ENDCOMMON 3 0 1080000100035 ENDSUBENT 34 0 1080000199999 SUBENT 10800002 20160608 14181080000200001 BIB 3 5 1080000200002 REACTION (1-H-1(N,THS)1-H-1,COH,AMP,,MSC) Parahydrogen 1080000200003 STATUS (TABLE) Table 3, Phys.Rev.Lett.26,1581,1971 1080000200004 HISTORY (19860909A) Reaction corrected. 1080000200005 (19910903A) Reaction corrected 1080000200006 (20160517A) Reaction SF8 corrected 1080000200007 ENDBIB 5 0 1080000200008 NOCOMMON 0 0 1080000200009 DATA 3 1 1080000200010 EN DATA DATA-ERR 1080000200011 EV FERMI FERMI 1080000200012 0.0253 -3.707 0.008 1080000200013 ENDDATA 3 0 1080000200014 ENDSUBENT 13 0 1080000299999 SUBENT 10800003 20160608 14181080000300001 BIB 3 5 1080000300002 REACTION (1-H-1(N,TOT),,SIG,,MSC) Parahydrogen 1080000300003 STATUS (TABLE) Table 1, Phys.Rev.Lett.26,1581,1971 1080000300004 HISTORY (19860909A) Reaction corrected. 1080000300005 (19910903A) Reaction corrected 1080000300006 (20160517A) Reaction SF8 corrected 1080000300007 ENDBIB 5 0 1080000300008 NOCOMMON 0 0 1080000300009 DATA 3 3 1080000300010 EN DATA DATA-ERR 1080000300011 EV B B 1080000300012 4. -03 4.663 0.031 1080000300013 4.5 -03 4.469 0.050 1080000300014 5. -03 4.365 0.016 1080000300015 ENDDATA 5 0 1080000300016 ENDSUBENT 15 0 1080000399999 ENDENTRY 3 0 1080099999999