Dynamics of a vaporgas bubble formed by laser breakdown in a liquid
Abstract
Hydrodynamic equations are employed to describe the explosive expansion of a vaporgas void generated by laser breakdown in a liquid. For the simple case of the radial expansion of a gaseous spheroid modeled as an ellipsoid of revolution, the expansion process is assumed to be adiabatic; two equations in two variables are written to describe values of the minor and major axes of the spheroid at different times. The counterpressure of the liquid, which induces pulsations and compression rather than unbounded expansion, is also taken into account. Calculations conducted with the RungeKutta method indicate that the void compresses to an oblate spheroid by the end of the pulsation cycle.
 Publication:

PMTF Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki
 Pub Date:
 October 1977
 Bibcode:
 1977PMTF...18...39L
 Keywords:

 Bubbles;
 Laser Applications;
 LiquidVapor Interfaces;
 Photodissociation;
 Gas Expansion;
 Hydrodynamic Equations;
 Oblate Spheroids;
 RungeKutta Method;
 Voids;
 Lasers and Masers