EXPERIMENTAL STATION 2-1

CURRENT STATUS:	Open
SUPPORTED TECHNIQUES:	Powder diffraction Thin film diffraction
MAIN SCIENTIFIC DISCIPLINES:	Materials / Environmental
% TIME GENERAL USE:	100%
SCHEDULING:	see Proposal Submittal and Scheduling Procedures
SOURCE:	1.3 Tesla Bend Magnet
BEAM LINE SPECIFICATIONS:   energy range resolution DE/E spot size flux angular acceptance focused 4000-14500 eV ~5 x 10-4 .20 x 0.45 mm   1.5 mrad
OPTICS:	Bent cylinder, single-crystal Si, Rh-coated mirror Radii: 2900 m (adjustable) x 52 mm Mean angle of incidence: 4.2 milliradians Cut off energy: 14.5 keV, Magnification: 1.1
MONOCHROMATOR:	Si(111), Si(220) Si(400), upward reflecting, double-crystal
ABSORPTION:	584 microns Be, 10.7 meters He, 15.2 microns C
INSTRUMENTATION:	Detector: ion chambers, PMTs, current amplifiers, Soller slits, crystal analyzers. Diffractometer: Huber 2-circle, high-resolution powder sample
DATA ACQUISITION AND ANALYSIS:	SUPER Origin GSAS
RESPONSIBLE STAFF:	Bart Johnson, 650-926-3858 Apurva Mehta, 650-926-4791
BEAM LINE PHONE NUMBER:	650-926-5221
GENERAL DESCRIPTION:	BL2-1 is a dedicated powder and thin film diffraction station. It is equipped with Huber 2-circle goniometer, a high-resolution crystal-anlyzer detector, and several different types of sample stages, including a motorized xyz state, a "wet" liquid sample stage and a cryostat (temperature range 4 K - 350 K). Analysis software provided include Origin (from Microcal), GSAS (Rietveld analysis), and a searchable powder diffraction database. The main user communities are materials science, environmental science and archaeometry.
SCIENTIFIC APPLICATIONS / SELECTED RESULTS:	March 2007: Ancient Warriors and the Origin of Chinese Purple October 2006: Structural Sequestration of Uranium in Bacteriogenic Manganese Oxides August 2006: Hydrogen: Key to a Sustainable Future November 2004: Structural Studies of Catalytically Stabilized Industrial Hydrotreating Catalysts November 2003: Remediation of Uranium-contaminated Water at Fry Canyon, Utah September 2003: Synchrotron Mesodiffraction: A Tool for Understanding Turbine Engine Foreign Object Damage
ENGINEERING NOTES	http://www-ssrl.slac.stanford.edu/safety/beamlines/bl2/

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Last Updated:	11 JAN 2008
Content Owner:	Bart Johnson
Page Editor:	Lisa Dunn