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Highly Sensitive Laser Diode Detection of CsCl

Edward Augustyniak, Aleksander Ershov, Jacek Borysow

Nuclear Technology / Volume 159 / Number 2 / August 2007 / Pages 221-226

Technical Note / Radiation Measurements and Instrumentation

A highly sensitive method aimed at detection of CsCl on nuclear remediation sites with isotopic selectivity was developed. The approach couples electric discharge in hydrogen as a source of dissociation of CsCl with high-resolution absorption spectroscopy using a tunable laser diode for subsequent identification of metallic cesium. The number densities of CsCl as low as 5 × 107 cm-3 can be detected with a signal-to-noise ratio better than 10 during seconds-long observation.

 
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