Optical absorption and electron-energy-loss spectra of helium microbubbles in aluminum

J. C. Rife; S. E. Donnelly; A. A. Lucas; J. M. Gilles; J. J. Ritsko

doi:10.1103/PhysRevLett.46.1220

Optical absorption and electron-energy-loss spectra of helium microbubbles in aluminum

J. C. Rife, S. E. Donnelly, A. A. Lucas, J. M. Gilles, J. J. Ritsko

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Abstract

Aluminum thin films containing helium microbubbles produced by He+-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 1S01-nP11 helium line series and several Al plasmon bands are discussed in terms of the physical state of helium in the bubbles. Results imply helium densities 3 to 6 times that of liquid He at 2°K and 1 bar pressure.

Original language	English
Pages (from-to)	1220-1223
Number of pages	4
Journal	Physical Review Letters
Volume	46
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.46.1220
Publication status	Published - 4 May 1981
Externally published	Yes

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abstract = "Aluminum thin films containing helium microbubbles produced by He+-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 1S01-nP11 helium line series and several Al plasmon bands are discussed in terms of the physical state of helium in the bubbles. Results imply helium densities 3 to 6 times that of liquid He at 2°K and 1 bar pressure.",

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AU - Donnelly, S. E.

AU - Lucas, A. A.

AU - Gilles, J. M.

AU - Ritsko, J. J.

PY - 1981/5/4

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N2 - Aluminum thin films containing helium microbubbles produced by He+-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 1S01-nP11 helium line series and several Al plasmon bands are discussed in terms of the physical state of helium in the bubbles. Results imply helium densities 3 to 6 times that of liquid He at 2°K and 1 bar pressure.

AB - Aluminum thin films containing helium microbubbles produced by He+-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 1S01-nP11 helium line series and several Al plasmon bands are discussed in terms of the physical state of helium in the bubbles. Results imply helium densities 3 to 6 times that of liquid He at 2°K and 1 bar pressure.

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Optical absorption and electron-energy-loss spectra of helium microbubbles in aluminum

Abstract

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