Optical Absorption and Electron-Energy-Loss Spectra of Helium Microbubbles in Aluminum

Optical Absorption and Electron-Energy-Loss Spectra of Helium Microbubbles in Aluminum

Aluminum thin films containing He microbubbles produced by He exp + -ion implantation have been investigated by ultraviolet absorption and electron--energy-loss spectroscopies in the range 1-30 eV. The shape and position of the 1 exp 1 S sub 0 -n exp 1 P sub 1 He line series and several Al plasmon b...

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Veröffentlicht in:Physical review letters 1981-05, Vol.46 (18), p.1220-1223
Hauptverfasser: Rife, J. C., Donnelly, S. E., Lucas, A. A., Gilles, J. M., Ritsko, J. J.
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Sprache:eng
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Zusammenfassung:Aluminum thin films containing He microbubbles produced by He exp + -ion implantation have been investigated by ultraviolet absorption and electron--energy-loss spectroscopies in the range 1-30 eV. The shape and position of the 1 exp 1 S sub 0 -n exp 1 P sub 1 He line series and several Al plasmon bands are discussed in terms of the physical state of He in the bubbles. Results imply He densities 3-6 times that of liquid He at 2 deg K and 1 bar pressure. 19 ref.--AA
ISSN:0031-9007
DOI:10.1103/PhysRevLett.46.1220