SPACE RESOLVED TEMPERATURE MEASUREMENTS BY IMAGE INTENSIFIER PHOTON COUNTING IN A LASER - PLASMA INTERACTION EXPERIMENT
A method is presented to measure the temperature in laser produced plasmas by photon counting on a microchannel plate. The advantages and the limits of this technique are discussed as well as the results of temperature measurements for an experiment of laser - plasma interaction at a maximum power density of 10**12 W/cm**2. In this experiment the light intensity distribution in the spot was highly depressed in the center (about 40%) and the laser pulse duration was about 3 ns. Massive (CH)-n targets and thin (CH-n disks have been irradiated. Temperature measurements have been performed by photon counting on almost front view (30 degrees to the laser beam) soft X-ray images. In spite of the laser spot non-uniformity, temperature measurements have produced a uniform temperature distribution.
Bibliographic Reference: PHYSICS LETTERS, VOL. 109A (1985), NOS. 1, 2, PP. 43- 46
Record Number: 1989124133400 / Last updated on: 1987-01-01
Available languages: en