Primary scintillation yields induced by particles in gas mixtures of Argon/ at 9.5 bar

P. Amedo; S. Leardini; A. Saá-Hernández; D. González-Díaz

doi:10.1140/epjc/s10052-025-13903-w

EPJ

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2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2025) 85: 182
https://doi.org/10.1140/epjc/s10052-025-13903-w

Regular Article - Experimental Physics

Primary scintillation yields induced by $α$ $\alpha$ particles in gas mixtures of Argon/ ${CF}_{4}$ $\hbox {CF}_4$ at 9.5 bar

P. Amedo, S. Leardini, A. Saá-Hernández and D. González-Díaz^a

Instituto Gallego de Física de Altas Energías, Universidad de Santiago de Compostela, Campus sur, Rúa Xosé María Suárez Núñez, s/n, 15782, Santiago de Compostela, Spain

^a diego.gonzalez.diaz@usc.es

Received: 24 October 2024
Accepted: 4 February 2025
Published online: 14 February 2025

Abstract

We report time and band -resolved scintillation from $α$ $\alpha$ -particles in Ar/ ${CF}_{4}$ $\hbox {CF}_4$ mixtures at a pressure of 9.5 bar. Our results show that %-level addition of ${CF}_{4}$ $\hbox {CF}_4$ enables strong wavelength-shifted scintillation in the visible range, with yields at the level of 1000 ph/MeV, scintillation decay times of 9–25 ns and formation times well below 10 ns. Such a performance is a priori sufficient for accurate time-tagging of MeV-particles, without the need to resort to a pure noble gas, thus opening an appealing technological path for next-generation time projection chambers.

© The Author(s) 2025

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