A Measurement of Photon Production in Electron Avalanches in CF4
A. Kaboth, J. Monroe, S. Ahlen, D. Dujmic, S. Henderson, G. Kohse, R., Lanza, M. Lewandowska, A. Roccaro, G. Sciolla, N. Skvorodnev, H. Tomita, R., Vanderspek, H. Wellenstein, R. Yamamoto, P. Fisher
TL;DR
This study measures the photon-to-electron production ratio and scintillation spectrum in CF4 gas, providing essential data for improving dark matter detectors with directional sensitivity.
Contribution
It offers the first detailed measurement of photon production and spectrum in CF4 relevant for time projection chambers used in dark matter detection.
Findings
Photon-to-electron ratio is 0.34+/-0.04
Scintillation spectrum spans 200-800 nm
Results inform detector design for dark matter experiments
Abstract
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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