THE ORIGIN OF THE CHARACTERISTIC ELECTRON ENERGY LOSSES IN ALUMINUM AND MAGNESIUM
The characteristic electron energy loss spectra of aluminum and magnesium are measured by analyzing the energy distribution of 750, 1000, 1500 and 2020 ev electrons scattered by evaporated specimens through 90 deg . Measurements are also made of the loss spectra of aluminummagnesium alloys of unknown composition using a primary electron energy of 1500 ev. The loss spectra of both elements are similar in that they are composed entirely of combinations of two elementary energy losses, 10.3 and 15.3 ev in aluminum and 7.1 and 10.6 ev in magnesium. The alloy spectra consist of combinations of a loss that varied between 10.6 and 15.3 ev in different specimens, varied between 10.6 and 15.3 ev in different specimens, and a low-lying loss that varied between 7.1 and 10.3 ev. From measurements of the relative positions and intensities of the two fundamental losses in each element, the observed changes in position and intensity of the lowlying loss in very thin films of aluminum and the changes in position of the two fundamental losses in the alloys, it is concluded that the larger fundamental loss in each specimen is due to plasma excitation and that the smaller loss is a lowered plasma loss. (auth)
- Research Organization:
- Univ. of Western Australia, Nedlands
- NSA Number:
- NSA-15-017661
- OSTI ID:
- 4031508
- Journal Information:
- J. Nuclear Energy, Pt. C. Plasma Phys.-Accelerators-Thermonuclear Research, Journal Name: J. Nuclear Energy, Pt. C. Plasma Phys.-Accelerators-Thermonuclear Research Vol. Vol: 2
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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