This paper presents a measurement of the ratio of photon to electron production and the scintillation spectrum in a popular gas for time pro jection chambers, carbon tetrafluoride (CF4), over the range of 200 to 800 nm; the ratio is measured to be 0.34+/-0.04. This result is of particular importance for a new generation of dark matter time projection chambers with directional sensitivity which use CF4 as a fill gas.
@article{arxiv.0803.2195,
title = {A Measurement of Photon Production in Electron Avalanches in CF4},
author = {A. Kaboth and J. Monroe and S. Ahlen and D. Dujmic and S. Henderson and G. Kohse and R. Lanza and M. Lewandowska and A. Roccaro and G. Sciolla and N. Skvorodnev and H. Tomita and R. Vanderspek and H. Wellenstein and R. Yamamoto and P. Fisher},
journal= {arXiv preprint arXiv:0803.2195},
year = {2008}
}