####################################################
# F. J. Walker <walkerfj@ornl.gov>
# requesting 4 days, at minimum=4 days
# beamline 34ID-E, Point defect characterization in polycrystalline samples
# instrument 34ID-E microbeam
####################################################
# top:/home/www/beamtime-requests/req00795.txt
# UNICAT Member Beam Time Request  #795
# created Tue Apr 19 15:22:31 CDT 2005
####################################################

apsrun:
	2005-02

beamline:
	34ID-E

collaboration:
	Yes

collaborator_Wenjun:
	ON

contact:
	walkerfj@ornl.gov

days:
	4

description:
	The experiment seeks to characterize point defects in polycrystalline samples in order to understand, for example, defect generation during neutron irradiation.  The experiment will use the microprobe to characterize the diffuse scattering near Bragg reflections diffracted from individual grains in polycrystalline samples.  New experimental requirements include cooling of the sample using a Joule-Thompson cooling stage in order to minimize thermal diffuse scattering.  Scans of through the Bragg peak will require monochromatic scans in energy with fixed sample position.  The resulting data will be diffuse scattering maps characteristic of point defects in irradiated iron.

equipment_required:
	

experiment:
	Point defect characterization in polycrystalline samples

foreign_nationals:
	

hazards:
	Activated samples, cryogenics and pressurized gas.

instrument:
	34ID-E microbeam

instrument_other:
	

minimumdays:
	4

name:
	F. J. Walker

nonmembers:
	

unacceptable_dates:
	June 25 through July 1

z34ID_details:
	monochromatic scans are required

z34ID_parasitic:
	no


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