LASER FLASH LAMP.
Abstract
A method has been described for measuring the absorption coefficient of a gas carrying discharge currents typical of flash lamps. The absorption was obtained by comparing the radiation in two different directions from the same flash lamp, and hence, required no second flash lamp. The plasma was assumed to be uniform; Stefan's law involving the fourth power of temperature helps make this seem a reasonable approximation. In choosing a tube size, the internal dimension d should be approximately the reciprocal of the expected value of alpha for achieving the smallest probable error. The method may be of use for investigating plasmas of different origins and fields of application. The results obtained are useful for deciding whether lamps of given sizes are volume or surface radiators, and should be helpful in designing and evaluating illuminating geometries.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 1964
- Accession Number
- AD0615384
Entities
People
- G. O. Harding