Transient ionization in plasmas produced by point-like irradiation of solid Al targets
Autori: Gizzi LA., Cecchetti CA, Galimberti M., Giulietti A, Giulietti D., Labate L., Laville S., Tomassini P.
Affiliazione autori: CNR, Intens Laser Irradiat Lab IPCF, Area Ric, I-56124 Pisa, Italy;
Univ Pisa, Dipartimento Fis, Pisa, Italy;
INFM, Pisa, Italy;
Univ Bologna, Dipartmento Fis, Bologna, Italy
Abstract: Time-resolved x-ray spectroscopy has been used to investigate ionization dynamics of a micrometer-sized nanosecond laser-plasma during the plasma start-up phase. Experimental results are modeled using two-dimensional hydrodynamic simulations and time-dependent collisional-radiative calculations. The study clearly shows that, due to the rapid expansion cooling, x-ray emission originates predominantly from a well-localized plasma region characterized by rapidly evolving hydrodynamic conditions. In this region, ionization dynamics is found to depart substantially from the steady-state regime. The measurements provide clear evidence of this transient ionization regime showing good agreement with the time-dependent calculations. (C) 2003 American Institute of Physics.
Giornale/Rivista: PHYSICS OF PLASMAS
Volume: 10 (12) Da Pagina: 4601 A: 4604
Parole chiavi: laser-produced plasmas; X-ray emission; spectroscopy; resolution; dynamicsDOI: 10.1063/1.1624603Citazioni: 5dati 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