X-ray spectra from exploded-wire plasmas

Burkhalter, P. G.; Dozier, C. M.; Nagel, D. J.

doi:10.1103/physreva.15.700

Cited by 118 publications

(29 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Experiments studying single-wire z-pinches driven by >100 kA [1,2] revealed small, localized plasma constrictions which produced bright x-ray emission. In these experiments the constrictions formed at random points along the wires, which made diagnosing the plasma conditions difficult.…”

Section: Motivation and Scope Of Projectmentioning

confidence: 99%

Scaling of X pinches from 1 MA to 6 MA.

Bland

McBride²,

Wenger³

et al. 2010

View full text Add to dashboard Cite

This final report for Project 117863 summarizes progress made toward understanding how X-pinch load designs scale to high currents. The X-pinch load geometry was conceived in 1982 as a method to study the formation and properties of bright x-ray spots in z-pinch plasmas. X-pinch plasmas driven by 0.2 MA currents were found to have source sizes of 1 micron, temperatures >1 keV, lifetimes of 10-100 ps, and densities >0.1 times solid density. These conditions are believed to result from the direct magnetic compression of matter. Physical models that capture the behavior of 0.2 MA X pinches predict more extreme parameters at currents >1 MA. This project developed load designs for up to 6 MA on the SATURN facility and attempted to measure the resulting plasma parameters. Source sizes of 5-8 microns were observed in some cases along with evidence for high temperatures (several keV) and short time durations (<500 ps). 4 ACKNOWLEDGMENTS

show abstract

Section: Motivation and Scope Of Projectmentioning

confidence: 99%

Scaling of X pinches from 1 MA to 6 MA.

Bland

McBride²,

Wenger³

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Because of the axial symmetry of the load about the target center (aside from the power feed) the power from each REH was expected to be identical [18]. Comparison of M-shell tungstenemission features measured on GAMBLE II by Burkhalter [48] (insert in Fig. 9B) with simultaneous time-integrated features measured from both ends of the DH shows that significant tungsten emission originates from the bottom REH relative to that of the top (Fig.…”

Section: Top-bottom Axial Radiation Asymmetrymentioning

confidence: 99%

Overview of the dynamic-hohlraum x-ray source at Sandia National Laboratories.

Report¹

2007

View full text Add to dashboard Cite

Progress in understanding the physics of Dynamic-Hohlraums is reviewed for a system capable of generating 10 TW of axial radiation for high temperature (>200 eV) radiation-flow experiments and ICF capsule implosions. 2D magneto-hydrodynamic simulation comparisons with data show the need to include wire initiation physics and subsequent discrete wire dynamics in the simulations if a predictive capability is to be achieved.

show abstract

“…As a result, neon-like ions of medium and high Z are present in a variety of high temperature plasma sources. Strong line radiation involving the n=3 to n=2 transitions in neon-like ions has been observed from tokamaks, 1^ laser-produced plasmas, 5 " 8 gas puff z-pinches, 9 exploding wires, 10 vacuum sparks, 11 and the solar atmosphere. 12 " 15 The properties of neon-like ions suggest their use for diagnostic purposes.…”

Section: Introductionmentioning

confidence: 99%

“…26 Xray spectra of neon-like silver have been reported first from an exploding wire source 10 and, more recently, from a low inductance vacuum spark.…”

mentioning

confidence: 99%

High resolution n = 3 to n = 2 spectra of neon-like silver

Beiersdorfer¹,

Bitter²,

Goeler³

et al. 1986

View full text Add to dashboard Cite

DE8 -009748Spectra of the n=3 to n=2 transitions in neon-like silver emitted from the Princeton Large Torus have been recorded with a high-resolution Braggcrystal spectrometer. The measurements cover the wavelength region 3.3-4.1 A and include the forbidden 3p -* 2p electric quadrapole lines. Transi tions in the adjacent sodium-like, magnesium-like, and aluminum-like charge states of silver have also been observed and identified. The Ly-a spectra of hydrogen-like argon and iron, the Ka spectra of helium-like argon, potas sium, manganese, and iron, and the K/3 spectrum of helium-like argon fall in the same wavelength region in first or second order and have been measured concurrently. These spectra provide a coherent set of wavelength reference data obtained with the same spectrometer and from the same tokamak. This set is used as a basis to compare wavelength predictions for one-and twoelectron systems to each other and to determine the transition energies of the silver lines with great accuracy.

show abstract

X-ray spectra from exploded-wire plasmas

Cited by 118 publications

References 30 publications

Scaling of X pinches from 1 MA to 6 MA.

Scaling of X pinches from 1 MA to 6 MA.

Overview of the dynamic-hohlraum x-ray source at Sandia National Laboratories.

High resolution n = 3 to n = 2 spectra of neon-like silver

Contact Info

Product

Resources

About