Gas Breakdown Calculation: A Comparative Study.
Abstract
An attempt is made to develop a simple yet accurate gas breakdown model which can be easily coupled to the hydrodynamic equations governing fluid flow in laser-target interactions. The accuracy of three relatively simple models is investigated. Each is compared with the more accurate and complex quantum kinetic model. A gas consisting of a single monatomic species is assumed and attention is restricted to the early portion of the electron cascade. A temperature model is found to agree reasonably well with the quantum kinetic model at values of incident laser flux greater than 5 x 10 to the 9th power W/sq cm. A diffusion model is found to yield similar results. A two-temperature model, which is derived in an attempt to extend the range of the temperature model to lower values of incident flux, is found to be invalid. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1976
- Accession Number
- ADA034034
Entities
People
- David A. Kloc
Organizations
- Air Force Institute of Technology