In vacuum plasma generated by laser ablation of metallic targets (Cu and Ta) was investigated with and without the influence of 0.1 T axial magnetic field. The laser beam intensity, of the order of 1010 W/cm 2, was obtained by a Nd:Yag operating at 1064 nm wavelength, 9 ns pulse width and 500 mJ pulse energy. Time-of-flight measurements of ion emission were performed along the direction normal to the target surface by using an ion collector. Results demonstrated that the magnetic field creates an electron trap in front of the target. The electron charge density inside the trap modifies the electric potentials in the plasma inducing an higher ion acceleration. The presence of the electron cloud not only focuses the ion beam but also increases its energy, mean charge state and current.
|Title of host publication||34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts|
|Number of pages||4|
|Publication status||Published - 2007|
|Event||34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 - Warsaw, Poland|
Duration: 02 Jul 2007 → 06 Jul 2007
|Name||34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts|
|Conference||34th European Physical Society Conference on Plasma Physics 2007, EPS 2007|
|Period||02/07/2007 → 06/07/2007|
Copyright 2013 Elsevier B.V., All rights reserved.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics