scholarly journals Fast Charged Particles and Super-Strong Magnetic Fields Generated by Intense Laser Target Interaction

10.5772/24850 ◽  
2011 ◽  
Author(s):  
Vadim Belyaev ◽  
Anatoly Matafonov
Keyword(s):  
Magnetic Fields ◽  
Charged Particles ◽  
Intense Laser ◽  
Laser Target ◽  
Strong Magnetic Fields ◽  
Target Interaction

NEUTRINO PROCESSES IN STRONG MAGNETIC FIELDS AND SUPERNOVA PHYSICS

2005 ◽  
Vol 20 (32) ◽  
pp. 2435-2447
Author(s):  
HUAIYU DUAN
Keyword(s):  
Magnetic Fields ◽  
Charged Particles ◽  
Core Collapse ◽  
Strong Magnetic Fields

Strong magnetic fields are suspected to exist in some core-collapse supernovae, which would affect the neutrino processes such as νe+n ⇌ e-+p and [Formula: see text]. We briefly review the motion of charged particles in the presence of magnetic fields and the changes of the above processes induced by magnetic fields. We also discuss the implications of these changes for supernova physics in the context of neutrino-driven explosion.

scholarly journals Effects of self-generated electric and magnetic fields in laser-generated fast electron propagation in solid materials: Electric inhibition and beam pinching

2001 ◽  
Vol 19 (1) ◽  
pp. 59-65 ◽  
Author(s):  
A. BERNARDINELLO ◽  
D. BATANI ◽  
A. ANTONICCI ◽  
F. PISANI ◽  
M. KOENIG ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Laser Pulses ◽  
Intense Laser ◽  
Relativistic Electrons ◽  
Speed Of Light ◽  
Solid Materials ◽  
Strong Magnetic Fields ◽  
Intense Laser Pulses ◽  
Electric And Magnetic Fields ◽  
Electron Propagation

We present some experimental results which demonstrate the presence of electric inhibition in the propagation of relativistic electrons generated by intense laser pulses, depending on target conductivity. The use of transparent targets and shadowgraphic techniques has made it possible to evidence electron jets moving at the speed of light, an indication of the presence of self-generated strong magnetic fields.

scholarly journals Time-resolved turbulent dynamo in a laser plasma

2021 ◽  
Vol 118 (11) ◽  
pp. e2015729118
Author(s):  
Archie F. A. Bott ◽  
Petros Tzeferacos ◽  
Laura Chen ◽  
Charlotte A. J. Palmer ◽  
Alexandra Rigby ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Large Scale ◽  
Magnetic Energy ◽  
Initial Growth ◽  
Magnetic Field Generation ◽  
Laser Target ◽  
Time Resolved ◽  
Target Interaction ◽  
Strong Shear ◽  
Biermann Battery

Understanding magnetic-field generation and amplification in turbulent plasma is essential to account for observations of magnetic fields in the universe. A theoretical framework attributing the origin and sustainment of these fields to the so-called fluctuation dynamo was recently validated by experiments on laser facilities in low-magnetic-Prandtl-number plasmas (Pm<1). However, the same framework proposes that the fluctuation dynamo should operate differently when Pm≳1, the regime relevant to many astrophysical environments such as the intracluster medium of galaxy clusters. This paper reports an experiment that creates a laboratory Pm≳1 plasma dynamo. We provide a time-resolved characterization of the plasma’s evolution, measuring temperatures, densities, flow velocities, and magnetic fields, which allows us to explore various stages of the fluctuation dynamo’s operation on seed magnetic fields generated by the action of the Biermann-battery mechanism during the initial drive-laser target interaction. The magnetic energy in structures with characteristic scales close to the driving scale of the stochastic motions is found to increase by almost three orders of magnitude and saturate dynamically. It is shown that the initial growth of these fields occurs at a much greater rate than the turnover rate of the driving-scale stochastic motions. Our results point to the possibility that plasma turbulence produced by strong shear can generate fields more efficiently at the driving scale than anticipated by idealized magnetohydrodynamics (MHD) simulations of the nonhelical fluctuation dynamo; this finding could help explain the large-scale fields inferred from observations of astrophysical systems.

HIGH-ORDER HARMONIC GENERATION IN INTENSE LASER AND MAGNETIC FIELDS

1995 ◽  
Vol 04 (03) ◽  
pp. 533-546 ◽  
Author(s):  
T. ZUO ◽  
A. D. BANDRAUK
Keyword(s):  
Magnetic Fields ◽  
Harmonic Generation ◽  
Laser Pulses ◽  
High Order ◽  
Intense Laser ◽  
Two Dimensional ◽  
Intense Laser Fields ◽  
High Order Harmonic Generation ◽  
Strong Magnetic Fields ◽  
High Order Harmonic

The effect of strong magnetic fields on high-order harmonic generation is considered for the [Formula: see text] molecule and a two-dimensional hydrogen atom in intense laser fields. Exact solutions of the time-dependent Schrödinger equation reveals: (i) strong magnetic fields parallel to the laser polarization confine the ionized electron wavepacket thereby enhancing the intensity and extending the harmonic generation spectrum; (ii) strong magnetic fields in combination with intense circularly polarized laser pulses can be used to control even and odd harmonic generation in two-dimensional atoms.

scholarly journals Overview and specifications of laser and target areas at the Intense Laser Irradiation Laboratory

2021 ◽  
Vol 9 ◽  
Author(s):  
Leonida A. Gizzi ◽  
Luca Labate ◽  
Federica Baffigi ◽  
Fernando Brandi ◽  
Giancarlo Bussolino ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Mechanical Stability ◽  
Intense Laser ◽  
Target Area ◽  
Laser Target ◽  
Protection Measures ◽  
Target Interaction ◽  
Optical Diagnostic ◽  
Laser Focusing ◽  
Laser Focal Spot

Abstract We present the main features of the ultrashort, high-intensity laser installation at the Intense Laser Irradiation Laboratory (ILIL) including laser, beam transport and target area specifications. The laboratory was designed to host laser–target interaction experiments of more than 220 TW peak power, in flexible focusing configurations, with ultrarelativistic intensity on the target. Specifications have been established via dedicated optical diagnostic assemblies and commissioning interaction experiments. In this paper we give a summary of laser specifications available to users, including spatial, spectral and temporal contrast features. The layout of the experimental target areas is presented, with attention to the available configurations of laser focusing geometries and diagnostics. Finally, we discuss radiation protection measures and mechanical stability of the laser focal spot on the target.

Injection of High Velocity Charged Particles into Strong Magnetic Fields

1963 ◽  
Vol 34 (5) ◽  
pp. 1415-1423
Author(s):  
Malcolm A. MacLeod ◽  
Ralph W. Waniek
Keyword(s):  
Magnetic Fields ◽  
High Velocity ◽  
Charged Particles ◽  
Strong Magnetic Fields
Sign in / Sign up

Export Citation Format

Share Document