Transient absorption in electron-beam-excited rare gases at XeF laser wavelengths

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Abstract
Transient absorption experiments in pure and mixed rare gases were performed at the XeF laser wavelength using a broadband probe technique. The major absorbing species in this region are identified. There is a strong broadband absorption in electron‐beam‐excited argon which is due to Ar+2. In neon plasmas the broadband absorption is much weaker. However, there are a number of strong line absorptions due to Ne(3s‐4p) transitions, one of which coincides with the 351‐nm emission band of the XeF laser. Addition of xenon reduces Ne* absorption. The amount of xenon used is limited by the formation of Xe+2, which is also a strong absorber in the 350‐nm region.

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