|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Angular distribution and circular dichroism in the two-colour XUV+NIR above-threshold ionization of heliumстатья
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: 30 марта 2016 г.
- Авторы: Mazza T., Ilchen M., Rafipoor A.J., Callegari C., Finetti P., Plekan O., Prince K.C., Richter R., Demidovich A., Grazioli C., Avaldi L., Bolognesi P., Coreno M., O’Keeffe P., Fraia M.Di, Devetta M., Ovcharenko Y., Lyamayev V., Düsterer S., Ueda K., Costello J.T., Gryzlova E.V., Strakhova S.I., Grum-Grzhimailo A.N., Bozhevolnov A.V., Kazansky A.K., Kabachnik N.M., Meyer M.
- Журнал: Journal of Modern Optics
- Том: 63
- Номер: 4
- Год издания: 2016
- Издательство: Taylor & Francis
- Местоположение издательства: United Kingdom
- Первая страница: 367
- Последняя страница: 382
- DOI: 10.1080/09500340.2015.1119897
- Аннотация: The photoelectron angular distribution and the circular dichroism in two-colour XUV+NIR abovethreshold ionization of helium atoms have been investigated both experimentally and theoretically. Circularly polarized XUV pulses from the free electron laser FERMI have been spatially and temporally overlapped with circularly polarized optical pulses in the interaction region with an atomic helium jet. The emitted electrons were energy and angle analyzed by means of a velocity map imaging spectrometer. Asymmetry parameters of the angular distribution were determined and compared to theoretical predictions based on the strong field approximation and perturbation theory, respectively. For low NIR intensities, the ratio of the partial waves in the two-photon ionization process and their relative phase could be deduced. For high NIR intensities, the influence of multi-photon processes is discussed. Circular dichroism was revealed in both cases and is in good agreement with the results of the strong field approximation.
- Добавил в систему: Грызлова Елена Владимировна