Observation of a multiply ionized plasma with index of refraction greater than one

Shlyaptsev, V. N., author; Hunter, J. R., author; Keenan, R., author; Smith, R. F., author; Dunn, J., author; Scofield, J. H., author; Nilsen, J., author; Moon, S. J., author; Marconi, M. C., author; Rocca, Jorge J., author; Filevich, J., author; American Physical Society, publisher

Observation of a multiply ionized plasma with index of refraction greater than one

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ECEjjr00195.pdf (798.6 KB)

Date

2005

Authors

Shlyaptsev, V. N., author

Hunter, J. R., author

Keenan, R., author

Smith, R. F., author

Dunn, J., author

Scofield, J. H., author

Nilsen, J., author

Moon, S. J., author

Marconi, M. C., author

Rocca, Jorge J., author

Abstract

We present clear experimental evidence showing that the contribution of bound electrons can dominate the index of refraction of laser-created plasmas at soft x-ray wavelengths. We report anomalous fringe shifts in soft x-ray laser interferograms of Al laser-created plasmas. The comparison of measured and simulated interferograms shows that this results from the dominant contribution of low charge ions to the index of refraction. This usually neglected bound electron contribution can affect the propagation of soft x-ray radiation in plasmas and the interferometric diagnostics of plasmas for many elements.

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http://hdl.handle.net/10217/67847

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Observation of a multiply ionized plasma with index of refraction greater than one

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