کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8039032 | 1518590 | 2018 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relaxation processes in solid methane pre-irradiated with an electron beam
ترجمه فارسی عنوان
فرایندهای آرام سازی در متان جامد که پیش از تابش پرتو الکترونی تابش می شود
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کلمات کلیدی
متان جامد، تابش الکترونی، گونه های شارژ، دوباره سازی آرامش طیف سنجی فعال سازی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
چکیده انگلیسی
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 43â¯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 â35â¯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 behavior of solid methane subjected to a neutron flux.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 433, 15 October 2018, Pages 23-27
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 433, 15 October 2018, Pages 23-27
نویسندگان
E.V. Savchenko, O. Kirichek, C.R. Lawson, I.V. Khyzhniy, S.A. Uyutnov, M.A. Bludov,