Abstract

A VUV Mach-Zehnder interferometer has been equipped with CaF₂ optics. To test these, the hook method was used to measure the oscillator strength of the 146.9610-nm ${{}^1\text{S}}_0-{{}^3\text{P}}_1^0$ line of atomic xenon. The result, f = 0.244 ± 0.015, is in agreement with data obtained by other techniques. We conclude, as a result of this work, that application of our Mach-Zehnder interferometer to hook method measurements of oscillator strengths of lines with wavelengths longer than ~150 nm will be routine, but that such measurements below that wavelength limit must await development of more intense VUV continuum sources.

© 1981 Optical Society of America

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