On high frequency electrical conductivity of strongly coupled plasma

Berkovsky, M. A.; Djordjević, D.; Kurilenkov, Yu. K.; Milchberg, H. M.; Popović, Marko

doi:10.1088/0953-4075/24/23/029

Cited by 10 publications

(17 citation statements)

References 22 publications

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“…It is evident that whenever ξ = 1 − τ 2 Ω 2 /2 > 0, the real part of (5) acquires an additional maxima at ω m = ±Ω √ ξ, but for our data the values of ξ are always negative. Additionally, we successfully compare the data on σ(ω; n e , T ) determined in this paper to the data from [15] for Γ = 0.5, r s = 1 and r s = 4. The corresponding curves are shown in Fig.…”

Section: Resultsmentioning

confidence: 85%

The dynamic conductivity of strongly non-ideal plasmas: is the Drude model valid?

Adamyan¹,

Mihajlov²,

Sakan³

et al. 2009

J. Phys. A: Math. Theor.

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Section: Resultsmentioning

confidence: 85%

The dynamic conductivity of strongly non-ideal plasmas: is the Drude model valid?

Adamyan¹,

Mihajlov²,

Sakan³

et al. 2009

J. Phys. A: Math. Theor.

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“…However, until recently the determination of the dynamic plasma conductivity in the wide ranges of the electron densities (n e ) and the temperatures (T ) was not taken as the priority task. Namely, in the most cases the mentioned problem was not investigated as the main one [1][2][3][4][5], and only few authors presented the results of the direct definition of HF electrical conductivity [6][7][8][9][10] related to some selected values of n e and T .…”

Section: Introductionmentioning

confidence: 99%

“…The main aim was to examine the HF conductivity in the whole area of such plasmas, including here the region of the extremely large degrees of its non-ideality. This was especially important, since the existing literature data about the HF plasma conductivity [6][7][8][9][10] are just related to the extremely strongly coupled plasmas (10 21 cm −3 < n e 10 24 cm −3 ).…”

Section: Introductionmentioning

confidence: 99%

“…Another aim is to compare the obtained results with the existing theoretical results and computer simulation data [6][7][8][9][10], which refer to n e = 3.8 • 10 21 cm −3 , 2.52 • 10 22 cm −3 and 1.61 • 10 24 cm −3 . Such a comparison is very important because there is no data concerning the direct experimental measurements of HF conductivity of the dense strongly coupled plasmas [4], [17].…”

Section: Introductionmentioning

confidence: 99%

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The self-consistent determination of HF electroconductivity of strongly coupled plasmas

Srećković¹,

Adamyan

Ignjatović³

et al. 2010

Physics Letters A

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Here is presented the calculation of the dynamic electrical conductivity of fully ionized, strongly coupled plasmas as a function of the external electric field frequency ω. The calculations are based on the the formula for the energy-dependent collision frequency which is determined by means of the Green function theory methods, as a sum over the Matsubara frequencies. The domain of extremely high electron density: 10 21 ≤ n e ≤ 10 24 cm −3 , and for the temperature varying from 10 kK to 1.000 kK was examined. The real and imaginary parts of the conductivity for every electron density are presented in the generalized Drude-like form as a two-parameter function of the frequency ω in the region 0 < ω < 0.5ω p , where ω p is the plasma frequency. A good agreement between the obtained results and the existing theoretical and computing simulation data is shown.

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“…Since graphite electrodes are widely used and carbon plasmas form necessarily whenever an arc is struck with such an electrode, a study of carbon conductivity may be of industrial, military, and basic scientific interest. Although the conductivity of dense metal plasmas has been extensively studied and reported (1)(2)(3)(4)(5)(6)(7)(8)(9)(10), the conductivity of carbon in the plasma state has received less attention (11), perhaps due to the difficulty in preparing plasmas of carbon for study. This report studies the electrical conductivity of nearly pure carbon plasma for densities ranging from about 60% of solid density down to almost 2 orders of magnitude less.…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity Measurement of Nonideal Carbon Plasma

Vunni¹,

DeSilva²

2008

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Approved for public release; distribution is unlimited.ii REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) August 20082. REPORT TYPE PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) U.S. Army Research Laboratory ATTN: AMSRD-ARL-WM-TE Aberdeen Proving Ground, MD 21005-5069 PERFORMING ORGANIZATION REPORT NUMBER ARL-TR-4551 SPONSOR/MONITOR'S ACRONYM(S) 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution is unlimited. SUPPLEMENTARY NOTES* Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742 ABSTRACTThe electrical conductivity of carbon plasmas is measured in the range of densities from 0.16 solid density down to about 0.05 solid density and reported for values of internal energy ranging from 4 to 22 kJ/g. Plasmas are formed by rapid electrical discharge through thin graphite fibers immersed in a water bath. The pressure in the expanding plasma column is determined by a hydrodynamic model to describe the effect on the water surround. At constant internal energy per unit mass U, conductivity σ varies with specific volume V as σ = V α , where α is about 1.2 for U 6 kJ/g < , and rises to about 1.5 for U = 22 kJ/g. SUBJECT TERMSplasma, electrical conductivity, carbon, energy, temperature

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On high frequency electrical conductivity of strongly coupled plasma

Cited by 10 publications

References 22 publications

The dynamic conductivity of strongly non-ideal plasmas: is the Drude model valid?

The dynamic conductivity of strongly non-ideal plasmas: is the Drude model valid?

The self-consistent determination of HF electroconductivity of strongly coupled plasmas

Electrical Conductivity Measurement of Nonideal Carbon Plasma

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