Local-field enhancement in a femtosecond laser plasma induced on a modified target surfaceстатья
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Местоположение издательства:[Bristol, UK], England
Первая страница:600
Последняя страница:605
Аннотация:The possibility of local-field enhancement in a high-temperature solid-density femtosecond laser plasma induced on a modified target surface by laser radiation with an intensity of 10(15)-10(16) W/cm(2) is investigated. The amplitude of the local field may effectively increase in a plasma if the plasma temperature is sufficiently high (T-e > 500 eV) and the ionization degree is sufficiently low (Z <10). If these conditions are satisfied for plasmas produced on silicon and aluminum gratings and in carbon foam with optimal parameters, then the local electromagnetic field can be enhanced by a factor of 3-5, the temperature of the hot electron component may increase from 5 to 15 keV, and the yield of soft and hard X-ray emission may become noticeably higher.