K-shell X-ray sources at the Z Accelerator

被引：48

作者：

Coverdale, C. A. ^{[1
]}

Jones, B. ^{[1
]}

Ampleford, D. J. ^{[1
]}

Chittenden, J. ^{[2
]}

Jennings, C. ^{[1
]}

Thornhill, J. W. ^{[3
]}

Apruzese, J. P. ^{[3
]}

Clark, R. W. ^{[4
]}

Whitney, K. G. ^{[4
]}

Dasgupta, A. ^{[3
]}

Davis, J. ^{[3
]}

Guiliani, J. ^{[3
]}

LePell, P. D. ^{[5
]}

Deeney, C. ^{[6
]}

Sinars, D. B. ^{[1
]}

Cuneo, M. E. ^{[1
]}

机构：

[1] Sandia Natl Labs, Albuquerque, NM 87185 USA

[2] Univ London Imperial Coll Sci Technol & Med, London, England

[3] USN, Res Lab, Washington, DC 20375 USA

[4] Berkeley Res Associates Inc, Springfield, VA 22150 USA

[5] Ktech Corp Inc, Albuquerque, NM 87123 USA

[6] NNSA DOE, Washington, DC 20375 USA

来源：

HIGH ENERGY DENSITY PHYSICS | 2010年 / 6卷 / 02期

基金：

美国能源部;

关键词：

Z Accelerator; K-shell X-rays; Z-PINCH; ALUMINUM-ARRAY; WIRE ARRAYS; EMISSION; RADIATION; SIMULATIONS; DIAGNOSTICS; INSTABILITY; IMPLOSIONS; ARGON;

D O I：

10.1016/j.hedp.2010.01.006

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The Z Accelerator has been used for many years as a research facility for high energy density plasmas, with applications ranging from astrophysics to inertial confinement fusion. The available current at the Z Accelerator (>15 MA) has also allowed for experiments over a wide range of K-shell X-ray sources, including Al (similar to 1.6 key), Ar (similar to 3.1 key), Ti (similar to 4.8 key), stainless steel (SS, similar to 6.7 key), and Cu (similar to 8.4 keV). The K-shell sources provide excellent opportunities for studying the details of a z-pinch through radiated output in various photon energy regimes, imaging, and spectroscopy. Variations in initial load configurations illustrate the difficulty in achieving appropriate plasma conditions for K-shell emissions, particularly for stainless steel and Cu. The requirement for large diameter loads (>40 mm) enhances the growth of the magnetic Rayleigh-Taylor instability during the implosion; evidence of this instability is presented in stagnated pinch data. Data from a variety of K-shell sources and load configurations are presented and discussed to illustrate the details of the imploding and stagnated z pinches. The application of existing and modified scaling theories to the K-shell data is also described, as are multidimensional calculations that can be directly compared to the experimental observations. The recent refurbishment of the Z Accelerator will ultimately increase the coupled energy available to a load, with an anticipated peak current of 26 MA into a wire array. The current waveforms measured to date are presented, along with a brief discussion of the current status of K-shell work at the Z Accelerator. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：143 / 152

页数：10

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