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# Ian Robinson <ikr@uiuc.edu>
# requesting 6 days, at minimum=4 days
# beamline 33ID, "Surface melting of Pb nanocrystals IV"
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# top:/home/www/beamtime-requests/req00311.txt
# UNICAT Member Beam Time Request  #311
# created Thu Dec 05 14:16:23 CST 2002
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beamline:
	33ID

collaboration:
	Yes

collaborator+Hawoong:
	on

contact:
	ikr@uiuc.edu

days:
	6

description:
	This ongoing project has not yet had its Dec 2002 beamtime assignment, but has enough unanswered questions that we are sure to need one more run to finish things off.  The current status is: i) we have nice 2D diffraction from 0.4micron crystals, ii) the data have been inverted successfully to get projection images of the grains,  iii) the grains were too crowded to be able to isolate non-overlapping patterns, even using our special RB slits  iv) current run will evaluate KB mirror method to reduce crowding and enhance signal  v) immediate goal is to get some reliable 3D diffraction patterns vi) longer term goal is to monitor the shape changes of the crystalline particle core during melting.

equipment+required:
	UHV diffractometer
	34-ID-C KB mirrors
	34-ID-C CCD detector

experiment:
	Surface melting of Pb nanocrystals IV

foreign+nationals:
	

hazards:
	Customary hazards of UHV diffractometer

minimumdays:
	4

name:
	Ian Robinson

new+request:
	on

nonmembers:
	

unacceptable+dates:
	not possible before March 8 due to anticipated birth of Mark Pfeifer Jr and APS march meeting


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