Abstract
The spatial confinement effects in laser-induced breakdown of aluminum (Al) targets in air have been investigated both by optical emission spectroscopy and fast photography. A KrF excimer laser was used to produce plasmas from Al targets in air. Al atomic emission lines show an obvious enhancement in the emission intensity when a pair of Al-plate walls were placed to spatially confine the plasma plumes. Images of the Al plasma plumes showed that the plasma plumes evolved into a torus shape and were compressed in the Al walls. The mechanism for the confinement effects was discussed using shock wave theory.
Original language | English (US) |
---|---|
Article number | 081501 |
Journal | Applied Physics Letters |
Volume | 91 |
Issue number | 8 |
DOIs | |
State | Published - 2007 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)