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Journal Article

Population densities in a titanium hollow cathode

MPS-Authors
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Danzmann,  Karsten
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Kock,  Manfred
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Citation

Danzmann, K., & Kock, M. (1981). Population densities in a titanium hollow cathode. Journal of Physics B, 14(16), 2989-2993. doi:10.1088/0022-3700/14/16/026.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-5E70-2
Abstract
Measurements are reported of population densities in the energy level systems of neutral and singly ionised titanium. The discharge under investigation was a high-current hollow cathode operated in argon or neon as a buffer gas. The measured kinetic and population temperatures of the neutral species differ by more than a factor of two. For the metal ions there is direct evidence of the effects of charge transfer and Penning collisions producing departures from a Boltzmann distribution. For the Ar-Ti hollow-cathode system inversion between the populations of the 5s and 5p configurations has been found.