####################################################
# Andrew Allen <andrew.allen@nist.gov>
# requesting 4 days, at minimum=3 days
# beamline 33ID, "In-situ USAXS studies of nanoparticle suspensions"
####################################################
# top:/home/www/beamtime-requests/req00434.txt
# UNICAT Member Beam Time Request  #434
# created Thu Aug 14 15:33:36 CDT 2003
####################################################

beamline:
	33ID

collaboration:
	Yes

collaborator_Pete:
	ON

contact:
	andrew.allen@nist.gov

days:
	4

description:
	This experiment will be a first in-beam test run of the in-situ USAXS flow cell system that is under construction at NIST. We wish to explore, in situ and in real-time, agglomeration and gelation issues in a flowing suspension under controlled temperature, pH, and suspension or dispersant concentration. Initial suspensions will be of silica, titania, alumina, zirconia and ceria. The extent of agglomeration and other particle aggregation effects will be followed as the conditions are varied, in an experimental configuration where al particles will be "counted"; nothing will be able to settle out. It is envisaged that this fluid flow cell will eventually become available to users as part of the UNICAT USAXS facility.

equipment_required:
	RS232 interfacing for several components. Discussions with Pete Jemian underway.

experiment:
	In-situ USAXS studies of nanoparticle suspensions

foreign_nationals:
	Ajit Jilla, Indian citizen with an APS User badge.

hazards:
	The fluid flow cell will operate in the 33-ID hutch. Apart from the main sample fluid circuit, there will be a heating/cooling water circuit using a water bath. Also, the pH of the sample aqueous supensions will be varied over the range 2 to 12 using a Microlab Dispenser that will be connected to the main fluid source which will be on a hot plate. A sonic disruptor will also be used intermittently in the main fluid source. Closed fluid circuits and PTFE tubing will be used, and the pH and temperature will be continuously monitored. These issues are already under discussion with UNICAT staff.

minimumdays:
	3

name:
	Andrew Allen

nonmembers:
	Ajit Jilla (NIST), Jan Ilavsky (Purdue, NIST), possibly Tabbetha Dobbins (Louisiana Tech).

unacceptable_dates:
	Before November 15: cell may not be ready before.

z34ID_details:
	


#REMOTE_HOST: porcelain.nist.gov
#REMOTE_ADDR: 129.6.180.24
#CONTENT_LENGTH: 1933
#HTTP_REFERER: http://www.uni.aps.anl.gov/unireq.htm
#HTTP_USER_AGENT: Mozilla/4.0 (compatible; MSIE 5.0; Mac_PowerPC)