Electronic energy levels in aluminum— A solid state Franck and Hertz experiment

Nakai, Yasuo; Garber, F.W.; Ritchie, R.H.; Birkhoff, R.D.

doi:10.1016/0022-3697(65)90095-8

Cited by 5 publications

(1 citation statement)

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“…This technique allows films of aluminum to be evaporated to thicknesses of the order of 70 A and still show conductivities approaching bulk values. Some preliminary data has been reported taken at ordinary vacua by Nakai et al 14 These data suggested that it would be highly desirable to have the foils evaporated and the electron current measurements performed in an ultrahigh-vacuum system in order to reduce oxidation of the top layer. Thus, an ultrahigh-vacuum system was constructed l • in which the low-energy electron studies could be carried out.…”

Section: Introductionmentioning

confidence: 99%

Low-Energy Electron Beam Studies in Thin Aluminum Foils

Garber

Nakai

Harter

et al. 1971

Journal of Applied Physics

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A comparative study of elastic scattering of low-energy electrons by boron, aluminum and gallium trihalides The transmission of normally incident electrons through aluminum, which has been vacuum deposited on a 75-A aluminum oxide insulator has been measured for electrons of energy between 1 eV and 4 keY. Currents to the top layer (65 to 525 A) and to the metallic bottom layer underlying the insulator were monitored with operational amplifiers in obtaining the transmission characteristic. Below 50 eV the transmission is apparently controlled by the aluminum oxide insulator. Above this energy the absorption increases rapidly until the entire beam current is absorbed in the top layer. At still higher energies the current to the top layer decreases through zero to a value of -1 (normalized). The energy at which the top current goes to zero was found to increase as the thickness of the top layer was increased. These data were analyzed to yield the electron stopping power which was found to vary from about 3.1 eV! A at 300 eV to about 4.5 eV! A at 950 eV when the raw data were corrected for nuclear scattering by a modified version of the Yang scattering theory.

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Section: Introductionmentioning

confidence: 99%