A Multiple Radiation Effects Facility for the Study of Structural and Flexible Materials Exposed to the Space Environment
A radiation effects facility is described which utilizes multiple radiation sources, vacuum chambers and thermal control to simulate the space environment. Use of the facility for eight months' continuous testing of thin film flexible materials is discussed and summary results, primarily from in-situ testing, are presented.
LOW-ENERGY PARTICLE RADIATION ENVIRONMENT AT SYNCHRONOUS ALTITUDE.
The degradation of thermal control coatings of satellites due to the effects of low energy charged particles in the space environment is discussed. Data obtained from ATS-5 satellite measurement of proton and electron fluxes are presented. The variations in electron density, proton density, and magnetic activity are presented to show correlations which exist between these space factors.
New Approaches for Positron Emission Tomography ( PET ) in Breast Carcinoma
Positron Emission Tomography (PET) is a nuclear medicine imaging technique which allows the quantitative evaluation of the distribution of several pharmaceuticals in a target area. PET therefore provides valuable information on the biochemical and biological activity inside a living subject in a noninvasive way, combining techniques applied in nuclear medicine with the precise localization achieved by computerized image reconstruction.