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Direct detection of delayed high energy electrons from the 181Ta target irradiated by a moderate intensity femtosecond laser pulseстатья
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: 11 апреля 2017 г.
- Авторы: Savel'ev A., Chefonov O., Ovchinnikov A., Agranat M., Spohr K.M.
- Журнал: Plasma Physics and Controlled Fusion
- Том: 59
- Номер: 3
- Год издания: 2017
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 035004
- DOI: 10.1088/1361-6587/aa5427
- Аннотация: We depict an experimental study of delayed fast, negatively charged particles from femtosecond laser-plasma interaction at an intensity of I ~ 1017 W cm−2. Plates of 2 mm thickness made of 181Ta (~100% abundance) and natural W were used as targets. We distinguished certain delayed events due to detection of negative H−, C− and O− ions. However, most events which were delayed by 0.5–5 μs with respect to the instantaneous plasma formation caused by the laser pulses, were identified as electrons with energies of 3–7 keV. A comparative analysis between the tantalum and tungsten spectra was undertaken. This revealed a close similarity between the measured spectrum for tantalum and the predicted spectrum for electrons arising from to the internal conversion decay of the 6.237 keV nuclear isomeric state in 181Ta.
- Добавил в систему: Савельев-Трофимов Андрей Борисович