https://doi.org/10.1051/epjconf/201816703004
Characterization of X-ray emission from laser generated plasma
1
Dottorato di Ricerca & Dip.to di Scienze Fisiche MIFT, Università di Messina, V.F.S. D’Alcontres 31, 98166 S. Agata(ME), Italy
2
Physics Institute, ASCR, 25068 Rez, Czech Republic
3
Dipartimento di Fisica & Astronomia, Università di Catania, V. S. Sofia 64, 95123 Catania, Italy
4
CNR-IMM, VIII strada n, 95121 Catania, Italy
5
ST-Microelectronics, Str.le Primosole 50, 95121 Catania, Italy
* Corresponding author: acannavo@unime.it
Published online: 9 January 2018
X-ray emission from laser generated plasma was studied at low (1010 W/cm2) and high (1018 W/cm2) intensity using ns and fs laser, respectively. Plasma characteristics were controlled trough the laser parameters, the irradiation conditions and the target properties. The X-ray spectra were acquired using fast detection technique based on SiC diodes with different active regions. The X-ray yield increases with the atomic number of the target, both at low and high intensity, and a similar empirical law has been obtained. The X-ray emission mechanisms from plasma are correlated to the plasma temperature and density and to the Coulomb charge particle acceleration, due to the charge separation effects produced in the non-equilibrium plasma. Functional dependences, theoretical approaches and interpretation of possible mechanism will be presented and discussed.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
