Initiator Duration Effect on Pulsed Chain Reaction Chemical Laser Scaling Laws.
Abstract
The effect of initiator pulse duration on the performance of a pulsed chain reaction chemical laser is investigated using a two-level vibrational model. Analytic results are presented for a saturated laser in the limits of weak and strong initiation. The initiator is assumed to provide a uniform (e.g., electron beam), parabolic (e.g., flash lamp), or power law variation of F-atom production rte F sub B with time. Laser performance is presented as a function of t sub b/t sub e where t sub B and t sub e are initiator and laser pulse times, respectively. In the weak initiation regime, an increase of t sub B/t sub e from zero to one results in a decrement in laser output energy of 20 and 33-1/3% for a flash lamp and electron-beam initiator, respectively. In the strong initiation regime, an increase of t sub B/t sub e fom zero to one results in an energy decrement of only 5 and 10% for a flash lamp and electron-beam initiator, respectively. In each case, the laser pulse time t sub e is increased by a factor of two as t sub B/t sub e increases from zero to one. Keywords: Scaling, laws, and Pulsed chemical lasers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1985
- Accession Number
- ADA163387
Entities
People
- Harold Mirels
Organizations
- The Aerospace Corporation