BL9-3

Overview

6-pole, 2-Tesla Wiggler, 2 mrad Acceptance Side Station

Beam line 9-3 is a wiggler side-station dedicated to biological x-ray absorption spectroscopy and EXAFS measurements of dilute solutions and single crystals. BL9-3 is equipped with a 100-element Ge monolithic solid-state detector in addition to ionization chambers and PIPS/Lytle detectors. A dedicated LHe cryostat allows for routine low temperature measurements on solutions. A Huber-Kappa goniometer, a LHe cryostream, a focusing polycapillary and a MAR CCD detector are available (in addition to specialized software) for single crystal measurements. The higher flux, tighter focus and excellent beam stability on BL9-3 is ideal for very dilute samples and single crystals of appropriate dimensions.

Sample Environment —

Minimum Sample Requirement	500 μM, 100 μl solutions; 10 ppm, 10 mg solids; > 5 single crystals of appropriate dimensions
Sample size	5 x 20 mm >gt 100 μm (all dimensions, for single crystal)
Sample temperature	10-200 K (solution), 20-50 K (single crystal) or Room Temperature
Other	Ambient pressure experiments

Instrumentation —

Detectors	Ionization chambers, PIPS, Lytle, Canberra 100-element Ge monolith solid-state, MAR IP or CCD for single crystal XAS
Cryostat	Oxford LHe cryostat (4-200 K), LHe cryostream for single crystal XAS (>10 K)
Other	Shutter and variable filters to alleviate beam damage, Soller slits and scatter-guard, Huber Kappa Goniometer for single crystal XAS, multiple-sample holder for room temperature samples. Automatic scan queueing available for multiple room temperature samples and/or multiple spots on cold samples.

General Information

Matthew Latimer — Scientist

(650) 926-4944

latimer@slac.stanford.edu

Leah Kelley — Staff Scientist

(650) 926-8558

leahk@SLAC.Stanford.EDU

Erik Nelson — Scientist

(650) 926-5103

enelson@slac.stanford.edu

Ryan Davis — Engineer

(650) 926-5581

rydavis@slac.stanford.edu

Ritimukta Sarangi — Scientist

(650) 926-4559

ritis@slac.stanford.edu

(650) 926-5293

Contact the Duty Operator at 9-926-4040

Beam Lines Map

Research Areas

Techniques

Specifications

Technical Specifications

Energy —

	Energy Range	Resolution ΔE/E	Spot Size	Flux
Focused	5000-30000 eV	1 x 10^-4	1 x 4 mm2	~2 x 10¹²

Optics —

M₀ Mirror	M₁ Mirror	Monochromator
Vertically collimating, flat, bent, 1 m, Si, Rh-coated	Cylindrical, bent, 1.2 m, Zerodur, Rh-coated	LN₂ cooled, Si(220), ϕ = 0o & 90o. double-crystal, non-fixed exit slit Monochromator Crystal Glitch Library