نتایج جستجو برای: plasma jet

تعداد نتایج: 388765  

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Jonathan Grava Michael A Purvis Jorge Filevich Mario C Marconi Jorge J Rocca James Dunn Stephen J Moon Vyacheslav N Shlyaptsev

The formation and evolution of a collisional aluminum plasma jet created by optical laser irradiation of triangular grooves with pulses of 120ps duration at an intensity of 1x10(12)W cm(-2) were studied with experiments and simulations. Series of high-contrast soft x-ray laser interferograms obtained with a 46.9nm laser mapped the plasma density evolution of an initially narrow plasma jet that ...

2008
B. V. Kuteev

The steady state operation of tokamak reactors requires re-radiating a substantial part of the fusion energy dissipated in plasma to make the heat loads onto the first wall more uniform and to reduce the erosion of divertor plates. One of the approaches realizing this goal uses injection of lithium dust jet into the scrape-off layer. In this paper a quantitative conceptual analysis of the react...

1999
I. P. Lokhtin

The angular structure of collisional and radiative energy losses of a hard parton jet propagating through the quark-gluon plasma is analyzed. The possibility to observe the energy losses of quarkand gluon-initiated jets in dense QCD-matter (jet quenching) measuring the characteristics of real hadronic jets in ultra-relativistic collisions of nuclei is investigated. In particular, using calorime...

2007
O. Hurba M. Hrabovský

Introduction The possibility of application of electric probes for diagnostics of thermal plasma jets is limited, especially due to the interaction of the probe with plasma. Nevertheless, some important information can be obtained. Electric probes were used for measurement of plasma potential in arc plasma [Chapman and Jones, 1978; Hrabovský and Konrad, 1991; Popov and Gateval, 2001], and for d...

Journal: :Journal of medical microbiology 2010
Stefan Rupf Antje Lehmann Matthias Hannig Barbara Schäfer Andreas Schubert Uwe Feldmann Axel Schindler

Atmospheric plasma jets are being intensively studied with respect to potential applications in medicine. The aim of this in vitro study was to test a microwave-powered non-thermal atmospheric plasma jet for its antimicrobial efficacy against adherent oral micro-organisms. Agar plates and dentin slices were inoculated with 6 log(10) c.f.u. cm(-2) of Lactobacillus casei, Streptococcus mutans and...

2004
Björn A M Hansson Hans M Hertz

The laser plasma is one of the major contenders as a high-power source for future high-volume-manufacturing extreme ultraviolet lithography systems. Such laser–plasma sources require a target system that allows high-repetition-rate operation with low debris and manageable thermal load at the required high laser power. In this paper, we review the development of the liquid-jet target laser plasm...

2017
Krishna Rajagopal

Within the context of a hybrid strong/weak coupling model of jet quenching, we study the consequences of the fact that the plasma produced in a heavy ion collision cannot resolve the substructure of a collimated parton shower within it to arbitrary resolution. We introduce a screening length parameter, LR,,, proportional to the inverse of the local temperature in the plasma, estimating the valu...

Journal: :Physical Review C 2022

The quark-gluon plasma produced in heavy-ion collisions is anisotropic throughout its evolution. This anisotropy changes the physics of jet-medium interaction, making it dependent on momentum direction jet. In this paper we analyze transverse broadening a jet parton interacting with soft gluons an plasma. Our analysis equally applies to quasiparticles kinetic theory. We subtract contribution fr...

Journal: :Physical review letters 2008
D J Ampleford S V Lebedev A Ciardi S N Bland S C Bott G N Hall N Naz C A Jennings M Sherlock J P Chittenden J B A Palmer A Frank E Blackman

The first laboratory astrophysics experiments to produce a radiatively cooled plasma jet with dynamically significant angular momentum are discussed. A new configuration of wire array z pinch, the twisted conical wire array, is used to produce convergent plasma flows each rotating about the central axis. Collision of the flows produces a standing shock and jet that each have supersonic azimutha...

1997
Geoffrey V. Bicknell Michael A. Dopita Zlatan I. Tsvetanov

We argue that the narrow line regions of Seyfert galaxies are powered by the transport of energy and momentum by the radio-emitting jets. This implies that the ratio of the radio power to jet energy flux is much smaller than is usually assumed for radio galaxies. This can be partially attributed to the smaller ages (∼ 106 yrs) of Seyferts compared to radio galaxies but one also requires that ei...

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