ENTRY 10799 20101023 13681079900000001 SUBENT 10799001 20101023 13681079900100001 BIB 12 24 1079900100002 INSTITUTE (1USABNL) 1079900100003 REFERENCE (J,PRL,32,791,197404) 1079900100004 AUTHOR (T.A.Kitchens,T.Oversluizen,L.Passell,R.I.Schermer) 1079900100005 TITLE Measurement of the Coherent Neutron Scattering Length 1079900100006 of 3He by Reflection from a Quartz-Liquid-Helium 1079900100007 Interface. 1079900100008 FACILITY (REAC,1USABNL) Reactor 1079900100009 INC-SPECT Be-filtered cold neutron beam. 1079900100010 SAMPLE Liquid He cell - 177 x 32 x 2.5 millimeters 1079900100011 Quartz crystal - 190 x 45 x 15. millimeters. Interface 1079900100012 side optically polished. 1079900100013 MONITOR (2-HE-4(N,THS)2-HE-4,COH,AMP) 1079900100014 METHOD Neutron beam transmitted through quartz and internally 1079900100015 reflected from liquid interface. Interior surfaces 1079900100016 lined with roughened Cd to reduce background. Mirror 1079900100017 system evaluated with several H2O-D2O mixtures. Run 1079900100018 made with 4He at 1.2 Kelvin. Run then made with 1079900100019 3He at 1.2 Kelvin. 1079900100020 ERR-ANALYS (DATA-ERR) No information on source of uncertainty. 1079900100021 STATUS (APRVD) Approved by L.Passell, 1979/1/9. 1079900100022 (TABLE) Data taken from reference text. 1079900100023 HISTORY (19781128C) 1079900100024 (20101023A) VM:Updated to new date formats,lower case. 1079900100025 BIB updates. 1079900100026 ENDBIB 24 0 1079900100027 NOCOMMON 0 0 1079900100028 ENDSUBENT 27 0 1079900199999 SUBENT 10799002 20101023 13681079900200001 BIB 1 2 1079900200002 REACTION (2-HE-3(N,THS)2-HE-3,COH,AMP) 1079900200003 Real part of coherent scattering amplitude. 1079900200004 ENDBIB 2 0 1079900200005 NOCOMMON 0 0 1079900200006 DATA 3 1 1079900200007 EN DATA DATA-ERR 1079900200008 EV FERMI FERMI 1079900200009 0.0253 6.1 0.6 1079900200010 ENDDATA 3 0 1079900200011 ENDSUBENT 10 0 1079900299999 ENDENTRY 2 0 1079999999999