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# Professor  BRENT J.  HEUSER <bheuser@uiuc.edu        (217) 333-9610>
# requesting 4 days, at minimum=2 days
# beamline 33ID, Investigation of He Bubbles in Borosilicate Glass
# instrument 33ID-D USAXS
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# top:/home/www/beamtime-requests/req00687.txt
# UNICAT Member Beam Time Request  #687
# created Mon Nov 15 12:13:48 CST 2004
####################################################

apsrun:
	2005-01

beamline:
	33ID

collaboration:
	Yes

collaborator_Pete:
	ON

contact:
	bheuser@uiuc.edu        (217) 333-9610

days:
	4

description:
	Investigate He bubble formation in borosilicate glass as part of nuclear waste storage. Very little is known about He bubble formation, solubility limit, bubble size, internal pressure, stability at 100-300 C, stability under heavy ion recoil bombardment. We implanted  He to different local concentrations in bulk and near a free surface (see above). Selected samples are annealed to facilite bubble formation at low concentrations (at or below the solubility limit) and for heavy ion bombardment (0.6 to 2 MeV Xe, for example). The latter treatement is to simulate the effect of heavy-ion recoil displacement cascade damage on the bubble stability. We have for the past 2 years investigated this effect with MD and are interested in comparing these simulations to real experiments.
SAXS is the primary characterization technique.We have performed  set of SAXS experiments at the APS using samples prepared with the accelerator. The SAXS data are consistent with the above quoted He solubility.

equipment_required:
	No

experiment:
	Investigation of He Bubbles in Borosilicate Glass

foreign_nationals:
	Alexander Yuryevich Terekhov,Russia, research scholar of UIUC, APS user badge B066033A . E-mail: terekhov@uiuc.edu.
Phone: (217) 244-3825.

hazards:
	

instrument:
	33ID-D USAXS

instrument_other:
	

minimumdays:
	2

name:
	Professor  BRENT J.  HEUSER

new_request:
	ON

nonmembers:
	

unacceptable_dates:
	

z34ID_details:
	


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