Interference Diagnosis of Laser Induced Vapor Plume,
Abstract
Based on plate sheared interference photographs taken of vapor plumes produced by coupling 1.06 micron length pulse Nd:glass laser and LY12 aluminium targets, measurements were made that shock wave speeds in air for t<50 microsec were approximately 473m/s and vapor plume front diffusion speeds were approximately 162m/s. Making use of relevent thermodynamic characteristic equation sets associated with vapor plume plasma, maximum values obtained for ion density, ion temperature, degree of ionicity, and absorption coefficients were, respectively, the results N approx= 3.1 X 10(exp 17)/cc, T approx.= 6096 K, eta approx.= 0.014, alpha at 1.06 microns approx.= 0.03/cm
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1995
- Accession Number
- ADA309757
Entities
People
- Liu Changling
- Yuan Yonghua
Organizations
- National Air and Space Intelligence Center