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Ionization-excitation magnetic sublevel cross sections for He+ (2p)2 2P(0) states following fast electron and proton impactстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Merabet H., Bruch R., Fulling S., Bailey M., Godunov A.L., McGuire J.H., Grum-Grzhimailo A.N., Bartschat K.
- Журнал: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
- Том: 205
- Год издания: 2003
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 399
- Последняя страница: 404
- DOI: 10.1016/S0168-583X(02)02047-5
- Аннотация: The first experimental magnetic substate scattering-angle-integrated cross sections following ionization-excitation of He(1s(2))S-1 to He-(2p) P-2(0) in the e(-) + He collision system have been determined using a combination of total cross sections and polarization fraction measurements in the extreme ultraviolet range. The derived magnetic sublevel cross sections, sigma(0) and sigma(1), for M-L = 0, +/-1 have been studied over a wide range of electron velocities (2-8.5 a.u.). These results are compared with previous cross sections for equi-velocity proton impact. In addition, our experimental data are compared with earlier theoretical predictions, our recent second-Born calculations fully including off-energy shell terms, and new R-matrix results. We have extended our polarization measurements for H+ + He collisions and found excellent agreement between theory and experiment at nearly all impact energies. However, the present second-Born and R-matrix results deviate slightly from the experimental electron data. (C) 2003 Elsevier Science B.V. All rights reserved.
- Добавил в систему: Грум-Гржимайло Алексей Николаевич