title: Simple adjustable liquid sample holder for x-ray absorption studies.
abstract: A sample holder is described which permits the rapid optimization of liquid thickness for x-ray absorption fine structure studies. In particular it has been applied to the measurement of both Extended X-Ray Absorption Fine Structure (EXAFS) and near-edge structure in the vicinity of the K absorption edge of potassium ions (E(0) approximately equal to 3605 eV) in a variety of solutions. The instrument basically consists of a pair of blocks--one fixed and one movable, both with transparent x-ray windows of stretched polypropylene which sandwich a thin sealed liquid sample bag of polyethylene or polypropylene and which, through squeezing via a micrometer drive, are experimentally adjusted to yield the desired sample thickness.
authors.affiliation: Physics Department, University of Houston, Houston, TX 77004, USA.
authors.forename: S C
authors.initials: SC
authors.lastname: Moss
authors.forename: H
authors.initials: H
authors.lastname: Metzger
authors.forename: M
authors.initials: M
authors.lastname: Eisner
authors.forename: H W
authors.initials: HW
authors.lastname: Huang
authors.forename: S H
authors.initials: SH
authors.lastname: Hunter