Soft-x-ray emission dynamics in picosecond laser-produced plasmas
Autori: Gizzi LA., Giulietti A., Willi O., Riley D.
Affiliazione autori: CNR, Ist Fis Atom & Mol, Area Ric, I-56010 Pisa, Italy;
Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England;
Queens Univ Belfast, Dept Phys, Belfast BT7 1NN, Antrim North Ireland
Abstract: Plasmas were generated by prepulse-free picosecond laser irradiation of solid targets consisting of five different fluorine salts. Picosecond-time-resolved x-ray spectroscopy of K-shell emission from H-like and He-like fluorine was performed to Study the temporal evolution of plasma parameters including electron density and temperature. Measurements show that the fluorine line emission intensity reaches its maximum in a time comparable with the rise time of the laser pulse. This peak is then followed by a decay whose rate depends upon the atomic number of the alkali component of the target. Our measurements show clear evidence of radiation cooling effects in higher-Z targets.
Giornale/Rivista: PHYSICAL REVIEW E
Volume: 62 (2) Da Pagina: 2721 A: 2727
Parole chiavi: laser plasmaDOI: 10.1103/PhysRevE.62.2721Citazioni: 8dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2021-09-19Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui