Correlation between soft X-ray emission and dynamics of fast capillary discharges

Tomonao Hosokai; Mitsuo Nakajima; Takayuki Aoki; Masao Ogawa; Kazuhiko Horioka

doi:10.1143/jjap.36.2327

Correlation between soft X-ray emission and dynamics of fast capillary discharges

Tomonao Hosokai, Mitsuo Nakajima, Takayuki Aoki, Masao Ogawa, Kazuhiko Horioka

Tokyo Institute of Technology

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

A capillary discharge was driven by a fast pulse power generator 'LIMAY-I' (3 Ω-70 ns) to investigate plasma dynamics. A two-stage pre-ionization circuit was developed to obtain uniformly preionized plasma load as the initial condition. Time-resolved radiations from the plasma column were observed by X-ray detectors and a fast streak camera. Experimental results indicated that the column can implode (rapidly contract) stably in an initial pressure range of 200-1000 Pa of argon. The reproducibility of the signal was quite good and the behavior of plasma column was well explained by one-dimensional magnetro-hydrodynamic (1D-MHD) simulation. These results suggest that the final plasma parameters satisfy the lasing condition for collisionally pumped Ne-like Ar with a sufficient margin of stability.

Original language	English
Pages (from-to)	2327-2335
Number of pages	9
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	36
Issue number	4 A
DOIs	https://doi.org/10.1143/jjap.36.2327
State	Published - Apr 1997
Externally published	Yes

Keywords

Capillary discharge
High density plasma
MHD simulation
Soft X-ray
Z pinch

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10.1143/jjap.36.2327

Cite this

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title = "Correlation between soft X-ray emission and dynamics of fast capillary discharges",

abstract = "A capillary discharge was driven by a fast pulse power generator 'LIMAY-I' (3 Ω-70 ns) to investigate plasma dynamics. A two-stage pre-ionization circuit was developed to obtain uniformly preionized plasma load as the initial condition. Time-resolved radiations from the plasma column were observed by X-ray detectors and a fast streak camera. Experimental results indicated that the column can implode (rapidly contract) stably in an initial pressure range of 200-1000 Pa of argon. The reproducibility of the signal was quite good and the behavior of plasma column was well explained by one-dimensional magnetro-hydrodynamic (1D-MHD) simulation. These results suggest that the final plasma parameters satisfy the lasing condition for collisionally pumped Ne-like Ar with a sufficient margin of stability.",

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T1 - Correlation between soft X-ray emission and dynamics of fast capillary discharges

AU - Hosokai, Tomonao

AU - Nakajima, Mitsuo

AU - Aoki, Takayuki

AU - Ogawa, Masao

AU - Horioka, Kazuhiko

PY - 1997/4

Y1 - 1997/4

N2 - A capillary discharge was driven by a fast pulse power generator 'LIMAY-I' (3 Ω-70 ns) to investigate plasma dynamics. A two-stage pre-ionization circuit was developed to obtain uniformly preionized plasma load as the initial condition. Time-resolved radiations from the plasma column were observed by X-ray detectors and a fast streak camera. Experimental results indicated that the column can implode (rapidly contract) stably in an initial pressure range of 200-1000 Pa of argon. The reproducibility of the signal was quite good and the behavior of plasma column was well explained by one-dimensional magnetro-hydrodynamic (1D-MHD) simulation. These results suggest that the final plasma parameters satisfy the lasing condition for collisionally pumped Ne-like Ar with a sufficient margin of stability.

AB - A capillary discharge was driven by a fast pulse power generator 'LIMAY-I' (3 Ω-70 ns) to investigate plasma dynamics. A two-stage pre-ionization circuit was developed to obtain uniformly preionized plasma load as the initial condition. Time-resolved radiations from the plasma column were observed by X-ray detectors and a fast streak camera. Experimental results indicated that the column can implode (rapidly contract) stably in an initial pressure range of 200-1000 Pa of argon. The reproducibility of the signal was quite good and the behavior of plasma column was well explained by one-dimensional magnetro-hydrodynamic (1D-MHD) simulation. These results suggest that the final plasma parameters satisfy the lasing condition for collisionally pumped Ne-like Ar with a sufficient margin of stability.

KW - Capillary discharge

KW - High density plasma

KW - MHD simulation

KW - Soft X-ray

KW - Z pinch

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JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

IS - 4 A

ER -

Correlation between soft X-ray emission and dynamics of fast capillary discharges

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Keywords

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