Spark Chamber Spectrometry and Space Radiation Studies.

Advances in instrumentation based on the spark-chamber technique for making charged particle studies of the aerospace environment have included the development of spark-discharge modules that are sealed against the space environment, a high-voltage generator with a long lifetime for use with spark chambers in space, a passive readout technique for spark-discharge counters, and a method of applying a clearing field that consumes no power. Analytical expressions have been derived for the flux of protons within cylindrical shell and slab disk shields exposed to protons in space. Reported also are studies in space radiation dosimetry.