# # arev:/usr/local/unicat/unireq/beamreq/req00058.txt # UNICAT Member Beam Time Request #58 # created Thu May 06 16:59:44 CDT 1999 # days: 6 description: The CDW transition in TiSe2 below Tc=200K is coupled to a superlattice formation, causing phonon softening near the L point. We will observe this effect on the TA phonon mode along A-L ([100]-[111]) via w-rocking curves and line scans. Data will be taken over a large temperature range. equipment+required: High resolution diffractometer, displex experiment: Charge density wave transitions in TiSe2 hazards: No special procedures needed. All samples are in solid form and are stable in air. Do not ingest or inhale. name: T.-C. Chiang new+request: on nonmembers: station: 33ID-D unacceptable+dates: July 4 - July 11 #QUERY_STRING: #REMOTE_HOST: chiang9.mrl.uiuc.edu #REMOTE_ADDR: 128.174.103.151 #CONTENT_LENGTH: 686 #HTTP_REFERER: http://www.uni.aps.anl.gov/unireq.htm #HTTP_USER_AGENT: Mozilla/4.04 [en] (Win95; I ;Nav)