BL-8A

BL-8A Weissenberg Camera for Powder/Single-crystal measurements under Extreme Conditions

1. Overview

This station has an imaging-plate Weissenberg camera that can be used with refrigerator, pressure cell, or furnace. The equipments allow us to make experiments under (1)the temperature region of 10K-1000K, (2) hydrostatic pressure up to 50GPa with temperature region 10K-300K. This camera is designed for single-crystal structure analysis as well as powder diffraction.
Significant studies of this station are (1) Direct observation of hydrogen captured in fullere , (2) Structural study of organic charge transfer complexes , etc.


2. Photons at Sample

This station has a bending magnet as a light source. The x-rays are monochromatized by Si(111) double flat monochromator and focused at the sample position by a Rh coated Si troidal mirror.
Beamline optics

OpticsLight source (Bending magnet) + x-y Slit
+ Si(111) monochromator + Toroidal mirror (1:1 focusing)
Energy range6 keV - 21 keV
Energy resolutiondE/E = 3 x 10-4
Beam sizevertical 0.3 mm x horizontal 0.5 mm
Acceptancevertical 0.2 mrad x horizontal 2 mrad


Photon flux as a function of energy must be similar to that at BL-4C because the optics is almost the same.

3. Equipments

An imaging plate Weissenberg camera (Rigaku co.) whose camera radius is 191.3mm is permanently installed. Attachments listed below are available: Whole instruments are controled from a Windows XP machine. The file size of a imaging plate photograph is about 17MB. We recommend to bring a hard disk drive with USB connection for data transfer, although we have CD-R and DVD-R drive.
KEK
PF
Home page of BL-4C (written in Japanese)
reiji.kumai(at)kek.jp
Last modified : 23 Feb, 2005