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Persistent URL http://purl.org/net/epubs/work/39092645
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Record Id 39092645
Title Relaxation processes in solid methane pre-irradiated with an electron beam
Contributors
Abstract The relaxation processes in CH4 solids irradiated by an electron beam were studied with a focus on post-irradiation phenomena. Because of absence of thermally stimulated luminescence (TSL) from pure solid methane we applied current activation spectroscopy method – thermally stimulated exoelectron emission (TSEE). Two broad features were detected near 18 and 43 K. Their relative intensity appeared to depend on irradiation time. The experiments performed with a variable voltage applied to an electrode for current detection first revealed significant accumulation of uncompensated negative charge in pre-irradiated methane films. The TSEE current was detected at negative voltages up to −35 V. Concurrently with thermally stimulated yield of electrons the total yield of thermally stimulated post-desorption (TSpD) from pre-irradiated solid methane film was detected. Correlation of TSEE and TSpD yields is discussed and compared with the temperature behaviour of solid methane subjected to a neutron flux.
Organisation ISIS , ISIS , STFC
Keywords
Funding Information EU, Horizon (645660)
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article Nucl Instrum Meth B 433 (2018): 23-27. doi:10.1016/j.nimb.2018.06.031 2018