ATOMISTIC ANALYSIS OF RECOMBINATIVE DESORPTION OF HYDROGEN FROM TUNGSTEN SURFACE
- Авторлар: Degtyarenko N.N.1, Grishakov K.S.1, Pisarev A.A.1, Gasparyan Y.M.1
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Мекемелер:
- National Research Nuclear University MEPHI
- Шығарылым: Том 165, № 4 (2024)
- Беттер: 470-485
- Бөлім: Articles
- URL: https://journals.rcsi.science/0044-4510/article/view/258982
- DOI: https://doi.org/10.31857/S0044451024040023
- ID: 258982
Дәйексөз келтіру
Аннотация
Within the density functional theory method, an analysis of the process of recombinative desorption of hydrogen atoms located on the surface and in the near-surface layers of tungsten W(100) is conducted. A mechanism for the growth of clusters of adsorbed hydrogen atoms on the tungsten surface is proposed. The calculation of activation energies for desorption processes for various configurations of adsorbed hydrogen atoms is performed. The dependence of the recombinative desorption activation energy on the local environment is shown. The lowest activation energy for recombinative desorption εdes ≈ 0.9–1.0 eV is achieved for a pair of H atoms, where one belongs to a cluster of hydrogen atoms adsorbed on the surface, and the other emerges from the subsurface layers of W(100).
Авторлар туралы
N. Degtyarenko
National Research Nuclear University MEPHI
Email: nndegtyarenko@mephi.ru
Ресей, 115409, Moscow
K. Grishakov
National Research Nuclear University MEPHI
Email: ksgrishakov@mephi.ru
Ресей, 115409, Moscow
A. Pisarev
National Research Nuclear University MEPHI
Email: ksgrishakov@mephi.ru
Ресей, 115409, Moscow
Yu. Gasparyan
National Research Nuclear University MEPHI
Хат алмасуға жауапты Автор.
Email: ksgrishakov@mephi.ru
Ресей, 115409, Moscow
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