Abstract
The results of experimental and theoretical investigation of the late, conductive-advectivc cooling of the fireball, produced by a laser spark in gas near a surface of condensed matter, are presented. The laser spark was initialed by the focusing of a 0.5 J 8 ns Nd: YAG laser. The fireball cooling rate was studied by using a fast frame camera and monochromatic imaging. A theoretical model is developed to describe the conducove-advective cooling stage. The model is reduced to a single nonlinear temperature diffusion equation. In the spherically symmetric case, a similarity solution found earlier is verified and employed for interpreting the experimental results.
| Original language | English |
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| Pages (from-to) | 631-638 |
| Number of pages | 8 |
| Journal | Physics of Plasmas |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1996 |