BL14-3b

Overview

Beam line 14-3a, located on the downstream table in the BL14-3 hutch, is a bending magnet side station dedicated to x-ray imaging and micro x-ray absorption spectroscopy of biological, biomedical, materials, and geological samples.  Most often used for data collection at the S K edge, BL14-3 is the only SSRL beam line capable of XAS at the P K edge. During imaging mode, a SIGRAY axially symmetric mirror system is used to achieve microfocus with a beam size of ~ 5 x 5 microns. BL14-3b is equipped with a 7-element Vortex silicon drift detector and ionization chambers for imaging. Sample positions are controlled with submicron accuracy by a Newport sample stage, inside a He environment. BL14-3b is ideal for obtaining elemental maps of small samples (about 20 microns to 25 mm) as well as performing spectroscopy on selected points in the sample (~ 5 x 5 microns).

Status —

Operational

Beamline Parameters —

Energy Range Resolution ΔE/E Spot Size Flux
Focused 2100-5000 eV ~1 x 10-4 5 x 5 µm 2 x 1010 ph/sec

Optics —

M0 Mirror M1 Mirror Monochromator Kirkpatrick-Baez System
Flat, bent, vertically collimating, 1 m, Si, Ni-coated, Bent, toroidal, 1.2 m, Ni-coated Water-cooled Si(111) ɸ=0, Si(111) ɸ=90 double crystal
Monochromator Crystal Glitch Library		 Microfocus

Source —

Bend Magnet

Instrumentation —

Detector Ionization chambers, 7-element Vortex detector, Visible CCD camera with fluorescence filters
Sample Positioning Newport Micro sample positioner

Sample Environment —

Helium environment
Ambient temperature and pressure, cold stage available upon request
Sample size: flexible, ~24 X 24 mm in one image, also accommodates larger samples.  Sample cartridges mounted on multi-position sample wheel.
Data Acquisition and Analysis


SPEAR3

Publications

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Science Highlights

We are in the process of porting over science highlights from our previous system. You can access new highlights and a portion or our catalog here. 

For science highlights dated before 2021 visit this site. Use the filters to narrow down your search by year and beam line.