Strong anomalous emission from He-like and H-like Ne in short-pulse laser-driven plasmas

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Journal of the Optical Society of America, Part B: Optical Physics

DOI:https://doi.org/10.1364/JOSAB.13.000089· OSTI ID:278673

Crane, J K; Nguyen, H; Wilks, S C; Ditmire, T; Coverdale, C A; Glover, T E; Perry, M D; Zakharenkov, Y ^[1]

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1. Lawrence Livermore National Laboratory, L-493, P.O. Box 808, Livermore, California 94550 (United States)

We observe strong emission from the 1{ital s}{sup 2}{endash}1{ital snp} Rydberg series in He-like Ne and from the Lyman-{alpha} transition in H-like Ne. These emissions are observed when 1.05-{mu}m light in a 600-fs laser pulse is focused into the dense, localized output of a pulsed supersonic nozzle. The maximum focal irradiance of our laser was measured at full power in vacuum to be 1.1{times}10{sup 18} W/cm{sup 2}. Although emissions from lower charge states such as Ne{sup 6+} and Ne{sup 7+} closely follow rates predicted by tunneling theory, emissions from Ne{sup 8+} and Ne{sup 9+} are observed at irradiances 2 orders of magnitude below tunneling theory estimates. We discuss the origins of these anomalously high charge states and the implications to the development of short-pulse, ultrahigh-brightness x-ray sources. {copyright} {ital 1996 Optical Society of America.}

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 278673
• Journal Information: Journal of the Optical Society of America, Part B: Optical Physics, Journal Name: Journal of the Optical Society of America, Part B: Optical Physics Journal Issue: 1 Vol. 13; ISSN JOBPDE; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
EFFICIENCY
EMISSION SPECTRA
PULSE TECHNIQUES
RAMAN EFFECT
X RADIATION