![](https://classlab.space.swri.edu/wp-content/uploads/2018/10/CharonTA-1.jpg)
We will use a microwave discharge lamp igniting H2 plasma to produce vacuum ultraviolet light. We plan to generate similar plasma from H2-noble gas mixtures while tuning the spectral output by adjusting mixing ratio, gas pressure, and flow to enhance the Ly-α flux relative to the broadband component. This lamp will be used in our laboratory effort related to the Origin of Charon’s red pole.