Transient ionization in plasmas produced by point-like irradiation of solid Al targets
Authors: Gizzi LA., Cecchetti CA, Galimberti M., Giulietti A, Giulietti D., Labate L., Laville S., Tomassini P.
Autors Affiliation: 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.
Journal/Review: PHYSICS OF PLASMAS
Volume: 10 (12) Pages from: 4601 to: 4604
KeyWords: laser-produced plasmas; X-ray emission; spectroscopy; resolution; dynamicsDOI: 10.1063/1.1624603Citations: 5data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-07-25References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here