A Measurement of Photon Production in Electron Avalanches in CF4

Details A Measurement of Photon Production in Electron Avalanches in CF4 A Measurement of Photon Production in Electron Avalanches in CF4

2008-03-14

arxiv.org/abs/0803.2195v1

Nucl.Instrum.Meth.A592:63-72,2008

Physics

Instrumentation and Detectors

19 pages, including appendix. 8 figures

Scientific paper

10.1016/j.nima.2008.03.120

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.

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