Accession Number : AD0707048

Title :   X-RAY AND GAMMA-RAY STUDIES OF HIGH ENERGY ELECTRON SCATTERING EVENTS USING SEMICONDUCTOR DETECTORS,

Corporate Author : STANFORD UNIV CALIF HIGH ENERGY PHYSICS LAB

Personal Author(s) : Middleman,L. M. ; Ford,R. L. ; Hofstadter,R.

Report Date : MAY 1970

Pagination or Media Count : 53

Abstract : Using high resolution semiconductor detectors, a study was made of the large K-ionization cross sections of atoms over a wide range of atomic numbers (Z = 29 to Z = 83) and of incident electron energies (E = 150 MeV to 900 MeV). For the higher Z elements (Z > 60) the L X-ray cross sections were also measured over the incident electron energy range. Ratios of the relative intensities of various distinct lines were determined and compared to recent low energy work. The results of the K-ionization experiment are compared to the recent relativistic calculations of H. Kolbenstvedt. A search for nuclear gamma-rays produced by high energy electron scattering was also undertaken in this work. No nuclear gamma-ray lines were detected. The null results were explained by recent theoretical calculations. (Author)

Descriptors :   (*ATOMS, *ELECTRON IRRADIATION), (*RADIATION MEASURING INSTRUMENTS, *SEMICONDUCTOR DEVICES), IONIZATION, X RAYS, DIFFERENTIAL CROSS SECTIONS, LINE SPECTRA, INTENSITY, ANNIHILATION REACTIONS, GAMMA RAYS

Subject Categories : Nuclear Instrumentation
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE