Modeling of the expansion of ultra-short-pulse laser-produced plasmas in magnetic fields

Download

index.pdf

Date

2000-04-01

Author

Ditmire, T
Rubenchik, A
Mirnov, VV
Ucer, D

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

146
views

0
downloads

The study of hot plasma expansion in a uniform magnetic field is of interest for many astrophysical applications. In order to observe this process in laboratory, an experiment is proposed in which an ultrashort laser pulse produces a high-temperature plasma by irradiation of a jet of atomic clusters. The very high laser light absorption exhibited in such a gas of clusters facilitates the creation of a hot (> 5 keV), dense (10(19)-10(20) cm(-3)) plasma with a sharp boundary. The small scale of the plasma ( 1T). Pump-probe techniques can then be used to diagnose the density and magnetic field with high spatial and temporal resolution (<50fs). In the present work the expansion rate of the plasma and deceleration caused by the magnetic field are examined analytically. Electrodynamical aspects related to the radiation and transformation of energy are considered as well. The results obtained can be used in treating experimental data, studying magnetic R-T instabilities and other phenomena of astrophysical significance.

Subject Keywords

Space and Planetary Science, Astronomy and Astrophysics

URI

https://hdl.handle.net/11511/67450

Journal

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES

DOI

https://doi.org/10.1086/313332

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Frequency-resolved spectroscopy of XB1323-619 using XMM-Newton data: detection of a reflection region in the disc Balman, Şölen (Oxford University Press (OUP), 2010-09-21) We present the frequency-resolved energy spectra (FRS) of the low-mass X-ray binary dipper XB1323-619 during persistent emission in four different frequency bands using an archival XMM-Newton observation. FRS method helps to probe the inner zones of an accretion disc. XB1323-619 is an Atoll source and a type-I burster. We find that the FRS is well described by a single blackbody component with kT in a range 1.0-1.4 keV responsible for the source variability in the frequency ranges of 0.002-0.04 and 0.07-0.3...
Investigations of pulsational properties and evolution of propagation diagram in some delta Scuti star models Kiziloglu, N; Kirbiyik, H; Civelek, R (World Scientific Pub Co Pte Lt, 2003-07-01) An investigation on the subject of evolution of propagation diagrams and obtaining the theoretical frequency spectrum of some delta Scuti star models with masses around 2 M-circle dot has been presented. The variations of some eigenfunctions throughout the star, the variation of omega(2) with logT(e) and the distribution of nodes of eigenfunctions of some modes along with the evolution of the star have been plotted and examined. For the models at the ZAMS phase, pure acoustic modes in the outer stellar laye...
OBSERVATIONS OF A DELTA SCUTI-LIKE PULSATOR - HR-7222 UYANIKER, B; KUCUK, I; YAR, A (Springer Science and Business Media LLC, 1993-02-01) Visual and blue band photometric observations of the delta Scuti-type variable have been carried out. It has been found that LT Vul pulsates in the radial fundamental mode. Higher overtones such as third and n > 3 overtones have also been detected.
The effect of boundary conditions on Rayleigh-Taylor instability Ucer, D; Mirnov, VV (American Astronomical Society, 2000-04-01) Laser experiments are widely used to investigate excitation of Rayleigh-Taylor modes, which are of great importance for astrophysical applications. Measured growth rates are normally compared with either the sharp interface or the smooth gradient model. In the present paper an analytical solution is obtained that is valid for arbitrary density gradient scale L. It is a further development of the Mikaelian & Lindl model. New explicit presentation omega(k) is found which describes all discrete modes at all tr...
VERITAS OBSERVATIONS OF THE BL LAC OBJECT 1ES 1218+304 Acciari, V. A.; et. al. (IOP Publishing, 2009-04-20) The VERITAS collaboration reports the detection of very-high-energy gamma-ray emission from the high-frequency-peaked BL Lac object 1ES 1218+304 located at a redshift of z = 0.182. A gamma-ray signal was detected with a statistical significance of 10.4 standard deviations (10.4 sigma) for the observations taken during the first three months of 2007, confirming the discovery of this object made by the MAGIC collaboration. The photon spectrum between similar to 160 GeV and similar to 1.8 TeV is well described...

Citation Formats

T. Ditmire, A. Rubenchik, V. Mirnov, and D. Ucer, “Modeling of the expansion of ultra-short-pulse laser-produced plasmas in magnetic fields,” ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, pp. 293–297, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67450.