Journal ArticleDOI
Soft x‐ray pumping of metastable levels of Li+
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TLDR
In this paper, the authors used the yttrium aluminum garnet laser beam (1.06 μm) to photoionize neutral Li vapor to produce Li+ metastables.Abstract:
Soft x rays from a plasma generated by a neodymium: yttrium aluminum garnet laser beam (1.06 μm) are used to photoionize neutral Li vapor to produce Li+ metastables. Maximum metastable densities of Li+ (1s2s) 1S=6×1014 ions/cm3 and Li+ (1s2s) 3S=3×1015 ions/cm3 are obtained. The effective lifetimes of these levels are measured to be approximately 5 ns. At 50 mJ of incident laser energy the inferred conversion efficiency from 1.06‐μm radiation to soft x rays is ∼14%.read more
Citations
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Proceedings ArticleDOI
Laser techniques for extreme-ultraviolet spectroscopy
TL;DR: In this article, the authors describe several techniques for using lasers to study core-excited energy levels in the spectral region between 10 eV and 100 eV, and they are particularly interested in levels that are metastable against autoionization and, in some cases, against both autoionisation and radiation.
Journal ArticleDOI
Saturation of the Xe III 109-nm laser using traveling-wave laser-produced-plasma excitation
TL;DR: The construction and operation of a 109-nm, photoionization-pumped, single-pass laser in Xe III is described, which is fully saturated and produces an output energy of 20 microJ in a beam with 10-mrad divergence.
Journal ArticleDOI
Photoionization lasers pumped by broadband soft-x-ray flux from laser-produced plasmas
TL;DR: In this paper, a 10mW average power laser can be produced at 37.2 nm at a 10-Hz repetition rate by photoionizing Na vapor with the soft-x-ray flux produced with a 1-J, 50psec-duration pulse from a 1.06-μm laser.
Journal ArticleDOI
High-gain inner-shell photoionization laser in Cd vapor pumped by soft-x-ray radiation from a laser-produced plasma source.
TL;DR: A soft-x-ray-pumped inner-shell photoionization laser has been produced in Cd vapor at 4416 and 3250 A and a reasonably high-energy storage of 0.2 mJ/cm(3) in the upper laser states has been obtained.
Journal ArticleDOI
Quasi-metastable quartet levels in alkalilike atoms and ions.
TL;DR: The properties of a subclass of quartet levels of alkalilike atoms and ions that often retain metastability against autoionization and may have large radiative yields are described.
References
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Journal ArticleDOI
Some approaches to vacuum uv and x‐ray lasers
M. A. Duguay,Peter M. Rentzepis +1 more
TL;DR: In this paper, the ejection of electrons from inner shells of atoms through photoionization is suggested as a straightforward means of creating population inversions at vacuum uv and x-ray wavelengths.
Journal ArticleDOI
The interaction of 1.06 μm laser radiation with high Z disk targets
M. D. Rosen,Donald W. Phillion,V. C. Rupert,W. C. Mead,William L. Kruer,J. J. Thomson,H. N. Kornblum,V. W. Slivinsky,George J Caporaso,Michael Boyle,K. G. Tirsell +10 more
TL;DR: In this article, the x-ray emission of gold disks has been irradiated with 1.06 μm laser light at intensities between 7 × 1013 and 3 × 1015 W/cm2, and pulse lengths between 200 and 1000 psec.
Journal ArticleDOI
Laser-produced plasmas
P K Carroll,Eugene T. Kennedy +1 more
TL;DR: In this article, the authors present an overview of the essential features of the laser systems used to generate such plasmas followed by a summary of some concepts in plasma physics necessary for their proper interpretation, and the theory of the evolution of the plasma is presented in terms of a hydrodynamic model and the relationship between laser irradiance and plasma temperature is discussed.
Journal ArticleDOI
Short-pulse oscillator development for the Nd:glass laser-fusion systems
TL;DR: In this paper, the authors describe the development of an actively mode-locked and Q-switched (AMQ Nd:YAG oscillator system that generates a single pulse at 1.06 μm in the range of 100 ps to 1 ns, with energy of \sim 250 \mu J, and with good stability and reliability.
Low energy x-ray diagnostics: 1981
David Attwood,Burton L. Henke +1 more
TL;DR: In this paper, the authors discuss sub-kilovolt sources of x-ray emission, detectors for sub-kronovolt radiation, atomic scattering coefficients and calculations, reflective and diffractive X-ray imaging, coherence, interference and future possibilities.