NDLI: Development and characterization of a low current capillary discharge for X-ray laser studies

Content Provider	IEEE Xplore Digital Library
Author	Niimi, G. Hayashi, Y. Sakamoto, N. Nakajima, M. Okino, A. Watanabe, M. Horioka, K. Hotta, E.
Copyright Year	1973
Abstract	Capillary discharge experiments were carried out for soft X-ray laser studies. A ceramic capillary, which has an inner diameter of 3 mm and a length of 150 mm, has been used for the end-on X-ray diode observation, and a Pyrex capillary has been used for side-view observation. Spike output has been observed, when operating the device with a predischarge current of 5 to 15 A, a current of 9 to 35 kA with a rise time of 55 ns in an argon gas pressure range from 100 to 800 mtorr. It is found that without a predischarge current, spike output has been hardly observed. Observation of spike output at a low discharge current of 9 kA provides us a possibility for design of a compact soft X-ray laser device. When the predischarge is turned off, the side-view observation of the capillary discharge clearly shows the growth of instabilities during the pinch process. This suggests that the predischarge is indispensable for achieving a uniform plasma, which is required by the soft X-ray lasing in a capillary discharge.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	616
Ending Page	621
Page Count	6
File Size	257985
File Format	PDF
ISSN	00933813
Volume Number	30
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	X-ray lasers Pump lasers Laser excitation Laser theory Plasma x-ray sources Laser transitions Optical pulses Pulse amplifiers Argon Plasma devices
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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