Absolute determination of the X‐ray absorption coefficient of barium in the L region using a liquid absorption cell. (22nd November 2012)

• Record Type: Journal Article
• Authors: Kodre, Alojz; Padežnik Gomilšek, Jana; Hauko, Robert; Šala, Martin; Arčon, Iztok
• Is Part Of: X-ray spectrometry. Volume 42:Number 2(2013:Mar./Apr.)
• Page Start: 63
• Page End: 67
• Publication Date: 2012-11-22
• Subjects: X-ray spectroscopy -- Periodicals; 543.62
• DOI: 10.1002/xrs.2434
• Languages: English
• ISSNs: 0049-8246

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>A method of absolute measurement of X‐ray absorption coefficient is proposed, on the basis of the use of an adjustable pathlength liquid cell and a solution of the investigated element. A variational analysis of the measured data is developed to remove some sources of systematic error. A check of the exponential attenuation with thickness is used to suppress beam harmonics admixture and dark current drifts. The method is illustrated by a measurement on Ba in the <italic>L</italic> edge region, using aqueous solution of Ba nitrate. Measured data provide information on detailed energy dependence of the absorption beyond the Victoreen‐like trends reproduced in compilations. The proposed method provides a way to measure the absorption data for practically all elements and a wide range of photon energies. Copyright © 2012 John Wiley &amp; Sons, Ltd.</p> </abstract>