#
# arev:/usr/local/unicat/unireq/beamreq/req00139.txt
# UNICAT Member Beam Time Request  #139

# created Sun Sep 24 22:15:33 CDT 2000
#

collaboration:
	No

collaborator+Hawoong:
	on

contact:
	t-chiang@uiuc.edu

days:
	4

description:
	TDS images of Nb will be taken at temperatures above
	and below the transition temperature, then taken again with a
	magnetic field introduced to quench superconductivity.  Difference
	TDS patterns will be analyzed for signatures of the transition in
	phonon energy levels and population.
	
	A transition geometry will be employed, mounted on the UNICAT 
	cryostat using the CCD as an area detector.  Displex vaccuum and
	radiation shielding should be optimized for lowest temperature 
	possible. 
	
	

equipment+required:
	Displex, CCD (mount either on optics table or Huber)

experiment:
	transition properties of Nb through low-temperature thermal diffuse scattering 

foreign+nationals:
	

hazards:
	No special procedures necessary.  All samples in solid form and stable
	in air - do not ingest or inhale.

name:
	T.-C. Chiang

new+request:
	on

nonmembers:
	

station:
	33ID-D

unacceptable+dates:
	Dec. 4-8



#QUERY_STRING: 
#REMOTE_HOST: hhh.uni.aps.anl.gov
#REMOTE_ADDR: 164.54.216.45
#CONTENT_LENGTH: 1031
#HTTP_REFERER: http://www.uni.aps.anl.gov/unireq.htm
#HTTP_USER_AGENT: Mozilla/4.51 [en] (Win98; I)