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Your search keyword '"Y. Owadano"' showing total 3 results
Start Over Author "Y. Owadano" Journal aip conference proceedings
3 results on '"Y. Owadano"'

1. Fluorine recombination X-ray laser pumped by 10 ps KrF laser pulse

Author

Eisuke Miura, Y. Owadano, Isao Okuda, and Toshihisa Tomie

Subjects
Electron density, Pulse (signal processing), Analytical chemistry, chemistry.chemical_element, Plasma, Laser, law.invention, Ion, X-ray laser, chemistry, law, Fluorine, Irradiation, Atomic physics
Abstract

Reported is a search for the x‐ray amplification in a recombining fluorine plasma produced by the irradiation of a 10 ps KrF laser pulse. The pulse energy was 1 J and the maximum line‐focus length was 1 mm with 20 μm width. Fluorine Hα (81 A) intensity at 50 μm showed exponential growth of gl≊2, and gl≊1.5 for 11s2P‐1s3d line (103.8 A) at 100 μm. From the spatial distributions of He‐like and Li‐like ions, we discuss the detail of the plasma produced.

Published
1995
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2. Observation of resonant photo-excited fluorescence and application to plasma diagnostics

Author

Y. Matsumoto, Isao Matsushima, Y. Owadano, H. Yashiro, and T. Tomie

Subjects
Flash-lamp, Photoluminescence, Chemistry, Plasma, Laser, law.invention, symbols.namesake, Physics::Plasma Physics, law, Excited state, Physics::Space Physics, symbols, Plasma diagnostics, Atomic physics, Doppler effect, Doppler broadening
Abstract

Resonantly photo‐excited Al He α (7.76 A) fluorescence is observed in the configuration where the photo‐excited Al plasma expanded parallel to the blow off direction of the other Al plasma as a flash lamp. Both plasmas are produced by the irradiation of 10 ns KrF laser pulses on an Al slab target with a step‐height of around 500 μm. Doppler de‐coupling between two plasmas caused by the steep velocity gradient in expanding plasmas is reduced in this configuration. From the spatial distribution of the fluorescence, the scale length of velocity gradient is evaluated.

Published
1995
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3. Low power pulsed lasers as plasma sources of soft x-rays

Author

I. C. E. Turcu, Y. Owadano, A. G. Michette, F. O’Neil, A. M. Rogoyski, and C. Hills

Subjects
Materials science, business.industry, Spectral properties, Soft X-radiation, Soft X-rays, Plasma, Laser, law.invention, Power (physics), Optics, law, Microscopy, Optoelectronics, Emission spectrum, business
Abstract

The development of plasma sources of soft x‐rays, using pulsed KrF (600mJ) and Nd:YAG (500mJ) lasers, is described. The intensities and spectral properties of the sources have been investigated for various target materials. The use of the sources in soft x‐ray contact microscopy will be described.

Published
1986
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