A Study of the Generation and Application of Radiation from Channeled Electrons and Positrons.
Abstract
Experiments were conducted to evaluate channeling radiation as a useful source of hard x rays. The following crystals were studied: Lithium Hydride, Lithium deuteride, Diamond, Beryllium, Lithium Fluoride, Silicon, Gallium Arsenide, and Tungsten. In general, higher Z materials have intrinsically higher channeling radiation cross sections but they suffer from higher scattering cross sections. It was also found that electron and positron occupation lengths for silicon increase with incident particle energy and are larger for positrons than electrons. Radiation characteristics were also found to be very sensitive to crystal temperature. Encouraging results were obtained when the currents of the incident electron beams were increased theorectical investigations indicated that strained layer superlattices could provide a source of x rays which is comparable in intensity to channeling radiation from ordinary crystals with the additional advantage that it can be tuned by rotating the crystal.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1986
- Accession Number
- ADA177007
Entities
People
- Richard H. Pantell
Organizations
- Stanford University