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Articles With Citations to Z. Abou-Assaleh

Theoretical Plasma Physics

Controlled Thermonuclear Fusion Energy

1991

Physics of Fluids B: Plasma Physics 3, 485 (1991);

https://doi.org/10.1063/1.859892

"Non Maxwellian electron distributions in ionizing plasmas"

R. Marchand, J. P. Matte, and K. Parbhakar
INRS‐ENERGIE, CP 1020, Varennes, Quebec J3X 1S2, Canada

ABSTRACT
Electron kinetics is considered in a plasma in which the distribution of ion charge stages is far from the coronal equilibrium. In rapidly ionizing plasmas, radiative cooling and ionization are found to cause the electron distribution to deviate significantly from a Maxwellian. The relevance of such distribution functions to divertor plasmas near the neutralizer plate is discussed.

REFERENCES

...

34. R. Marchand, Z. Abou-Assaleh, and J. P. Matte, Phys. Fluids B 2, 1247 (1990).

...

Analysis of Electron Heat Transport in Femtosecond Laser-Plasma Interactions with Layered Solid Targets and with Thin Foils

Mordecai D. Rosen

X-Division, Physics Department, L-477

Lawrence Livermore National Laboratory

Livermore, CA 94550

Submitted for publication in the proceedings of

the International Workshop on Radiative Properties

of Hot Dense Matter, Sarasota, FL

October 22-26,1990

ABSTRACT

We analyze two types of experiments that enhance our knowledge

of the electron heat transport in femtosecond laser produced plasmas. The

first involves layered targets and the fall off of substrate signal with

increasing overlayer thickness. The experimental uncertainties are too

large at present to definitively quantify the heat transport. The second

involves the radiative output from thin foils. The behavior of the spectral

response to foil thickness implies that our understanding of the transport

within the foils is quite good.

https://inis.iaea.org/

Present state of research ...

Physics-Uspekhi, Volume 34(1991), Number 10, Pages 903-909

Present state of research into the interaction between powerful laser radiation and high-temperature plasmas

V T Tikhonchuk
Soviet Physics UspekhiVolume 34 (1991) Number 10 Pages 903–909

Abstract

Research into the interaction between powerful laser radiation and plasma is reviewed in the context of laser fusion. Topics discussed include absorption and scattering of laser radiation by plasmas and the transfer of heat from the region in which absorption takes place to denser plasma layers. It is shown that parametric processes that lead to anomalous (nonclassical) absorption and scattering of laser radiation by plasmas do not prevent the attainment of laser energies of the order of kilojoules or dozens of kilojoules. The main problems that await investigation before existing data can be extended to the megajoule range that is necessary for the ignition effusion reactions by lasers are reviewed.

DOI https://doi.org/10.1070/
Citation V T Tikhonchuk, "Present state of research into the interaction between powerful laser radiation and high-temperature plasmas", SOV PHYS USPEKHI, 1991, 34 (10), 903–909
Classification PACS: 52.38.Dx, 52.38.Bv, 52.38.Hb, 52.50.Jm
Full Text: PDF file (355 kB)
References: HTML file
 

AIP Applied Physics Letters

Appl. Phys. Lett. 59, 534 (1991);

https://doi.org/10.1063/1.105430

Measurement of energy penetration depth of subpicosecond laser energy into solid density matter

A. Zigler, P. G. Burkhalter, and D. J. Nagel
Naval Research Laboratory, Washington, DC 20375

M. D. Rosen
Lawrence Livermore Laboratory, Livermore, California 94550

K. Boyer, G. Gibson, T. S. Luk, A. McPherson, and C. K. Rhodes
University of Illinois at Chicago, P. O. Box 4348, Chicago, Illinois 60680

ABSTRACT

The energy penetration depth characteristic of the interaction of intense subpicosecond (∼600 fs) ultraviolet (248 nm) laser radiation with solid density material has been experimentally determined. This was accomplished by using a series of ultraviolet transmitting targets consisting of a fused silica (SiO2) substrate coated with an 80–600 nm layer of MgF2. The measurement of He‐like and H‐like Si and Mg lines, as a function of MgF2 thickness, enabled the determination of the energy penetration depth. It was found that this depth falls in the range of 250–300 nm for a laser intensity of ∼3×1016 W/cm2. Based on numerical simulations, it is estimated that solid density material to a depth of ∼250 nm is heated to an electron temperature of ∼500 eV.

REFERENCES

4.  J. H. Rogers, J. S. DeGroot, Z. Abou-Assaleh, J. P. Matte, T. W. Johnson, and M. D. Rosen, Phys. Fluids B 1, 741 (1989)

https://aip.scitation.org/doi/10.1063/1.105430

Physics of Fluids B: Plasma Physics -- February 1991 -- Volume 3, Issue 2, pp. 485-491

Non-Maxwellian electron distributions in ionizing plasmas

R. Marchand, J. P. Matte, and K. Parbhakar

INRS-ENERGIE, CP 1020, Varennes, Quebec J3X 1S2, Canada

ABSTRACT

Electron kinetics is considered in a plasma in which the distribution of ion charge stages is far from the coronal equilibrium. In rapidly ionizing plasmas, radiative cooling and ionization are found to cause the electron distribution to deviate significantly from a Maxwellian. The relevance of such distribution functions to divertor plasmas near the neutralizer plate is discussed. Physics of Fluids B: Plasma Physics is copyrighted by The American Institute of Physics.

Non-Maxwellian electron distributions in ionizing plasmas

Non-Maxwellian electron distributions in ionizing plasmas

Reference Query Results for 1991PhFlB...3..485M

https://ufn.ru/ru/articles/1991/10/e/

Октябрь 1991 г. Том 161, № 10

УСПЕХИ ФИЗИЧЕСКИХ НАУК

ИЗ ТЕКУЩЕЙ ЛИТЕРАТУРЫ

533.9

СОВРЕМЕННОЕ СОСТОЯНИЕ ИССЛЕДОВАНИЙ

ПО ФИЗИКЕ ВЗАИМОДЕЙСТВИЯ

МОЩНОГО ЛАЗЕРНОГО ИЗЛУЧЕНИЯ

С ВЫСОКОТЕМПЕРАТУРНОЙ ПЛАЗМОЙ

В. Т. Тихончук

(Физический институт им. П.Н. Лебедева АН СССР)

https://ufn.ru/ru/articles/1991/10/e/

http://data.ufn.ru//ufn91/ufn91_10/129.pdf

 

The current state of research in the physics of the interaction of high-power laser radiation with high-temperature plasma

V.T. Tihonchuk

The current state of research on the interaction of high-power laser radiation with a plasma is described as applied to the problem of laser thermonuclear fusion. The processes of absorption and scattering of laser radiation in plasma and the processes of heat transfer from the absorption region to denser plasma layers are considered. It is shown that parametric processes leading to anomalous (nonclassical) absorption and scattering of laser radiation in a plasma do not prevent the achievement of high compression coefficients of thermonuclear targets at a laser energy level of the order of kilojoules or tens of kilojoules. The main problems are indicated that require their study in order to adequately transfer the available results to the megajoule energy level required for the ignition of a pulsed thermonuclear reaction using a laser. Il. 4. Bible. references 54.

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