Bragg-like curve for dark matter searches; binary gases
Akira Hitachi
TL;DR
This paper evaluates quenching factors and presents Bragg-like curves for low-energy recoil ions in various gases, aiding directional dark matter detection with gas TPCs.
Contribution
It introduces calculated quenching factors and Bragg-like curves for gases relevant to dark matter searches, enhancing directional detection methods.
Findings
Quenching factors for 5-200 keV ions in selected gases are provided.
Bragg-like curves for these gases are presented and analyzed.
Comparison with experimental data validates the estimates.
Abstract
The directional detection of low-energy recoil ions can provide strong possibility for observation of dark matter in the Galaxy. Quenching factors for 5-200 keV recoil ions in N2, CO2, CF4 and CS2 gases are evaluated and Bragg-like curves, the electronic energy deposition as a function of the projected range, are presented. The Bragg-like curves are intended for directional search for the dark matter candidate, WIMPs, using the gas TPC. Quenching factors for very heavy ions produced in alpha-decay in dry air, N2, CO2, CF4 and CS2 are also estimated and compared with experimental values.
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