Improved Vacuum Ultraviolet Supersonic Jet Absorption Spectrometer

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Abstract:

We report on design changes that have significantly improved the performance of our supersonic jet ultraviolet and vacuum ultraviolet absorption spectrometer. We incorporated the following three features: (1) direct detection of VUV photons rather than scintillator detection; (2) a triple-pass mirror arrangement; and (3) a larger-pathlength monochromator and a finer grating. These upgrades have yielded about an order-of-magnitude improvement in sensitivity and greater than fivefold improvement in resolution.

Keywords: Instrumentation, molecular beam; Spectroscopic techniques; UV-visible (VUV) spectroscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702934066479

Affiliations: 1: The Aerospace Corporation, P.O. Box 92957/M5-754, Los Angeles, California 90009; current address: GeoCenters Inc., Gun Powder Branch, P.O. Box 68, Aberdeen Proving Grounds, MD 21010 2: The Aerospace Corporation, P.O. Box 92957/M5-754, Los Angeles, California 90009

Publication date: December 1, 1993

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