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We analyze the non-Fourier dual-phase-lag heat conduction process in a three-dimensional medium heated by a moving circular or annular laser beam, which is modeled by a set of point heat sources in the cross-section. In order to solve the…

Classical Physics · Physics 2023-08-08 Kaiyuan Chen , Longkun Fan , Zhicheng Hu , Yixin Xu

The time-dependent Schr\"{o}dinger equation for the hydrogen atom and its interaction with coherent intense high-frequency short laser pulses is solved numerically exactly by propagating the single-electron wave packets. Thereby, the…

Atomic Physics · Physics 2013-09-11 Philipp V. Demekhin , David Hochstuhl , Lorenz S. Cederbaum

The dynamical properties of Cu in a regime relevant to femtosecond micro machining are obtained on picosecond time scales using pump-probe reflectivity study for 100fs, 1015 W cm-2 laser pulses. The electrical resistivity is obtained by…

Plasma Physics · Physics 2007-05-23 Arvinder S. Sandhu , A. K. Dharmadhikari , G. Ravindra Kumar

The partition function of two-dimensional solitons in a heat bath of mesons is worked out to one-loop. For temperatures large compared to the meson mass, the free energy is dominated by the meson-soliton bound states and the zero modes, a…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Kacir , I. Zahed

Atomic heating is a fundamental phenomenon governed by the thermal spike effect during energetic deposition. This work presented another insight into thermal spike using a coupled classical oscillator model instead of a typical heat…

Computational Physics · Physics 2024-12-05 Jiajian Guan , Yue He , Bin Liao , Xu Zhang

We review the properties of energetic parton propagation in hot or cold QCD matter, as obtained in recent works. Advances in understanding the energy loss - collisional and radiative - are summarized, with emphasis on the latter: it…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. Baier , D. Schiff , B. G. Zakharov

Ionization by relativistically intense short laser pulses is studied in the framework of strong-field quantum electrodynamics. Distinctive patterns are found in the energy probability distributions of photoelectrons. Except of the already…

Atomic Physics · Physics 2018-03-14 F. Cajiao Vélez , J. Z. Kamiński , K. Krajewska

High-order harmonic generation by few-cycle 800 nm laser pulses in neon gas in the presence of a strong terahertz (THz) field is investigated numerically with propagation effects taken into account. Our calculations show that the…

The induced momentum spectrum of soft gluons radiated from a high energy quark propagating through a QCD medium is derived in the BDMPS formalism. A calorimetric measurement for the medium dependent energy lost by a jet with opening angle…

High Energy Physics - Phenomenology · Physics 2009-10-31 R. Baier , Yu. L. Dokshitzer , A. H. Mueller , D. Schiff

Starting from a three-wave interaction system of equations for free-electron lasers in the framework of a quantum fluid model, we show that these equations satisfy the Sine-Gordon equation. The full solution in space and in time of this set…

Plasma Physics · Physics 2018-12-21 J. A. Arteaga , L. F. Monteiro , A. Serbeto , K. H. Tsui , J. T. Mendonça

The homogenization procedure developed here is conducted on a laminate with periodic space-time modulation on the fine scale: at leading order, this modulation creates convection in the low-wavelength regime if both parameters are…

Analysis of PDEs · Mathematics 2024-07-12 Marie Touboul , Bruno Lombard , Raphaël Assier , Sébastien Guenneau , Richard Craster

We compare the two-dimensional (2D) plasmon dispersion relations for monolayer graphene when the sample is doped with carriers in the conduction band and the temperature $T$ is zero with the case when the temperature is finite and there is…

Mesoscale and Nanoscale Physics · Physics 2017-07-26 Godfrey Gumbs , Antonios Balassis , V. M. Silkin

The propagation of intense picosecond laser pulses in air in the presence of strong nonlinear self-action effects and air ionization is investigated experimentally and numerically. The model used for numerical analysis is based on the…

Plasma Physics · Physics 2016-09-13 Andreas Schmitt-Sody , Heiko G. Kurz , L. Bergé , S. Skupin , Pavel Polynkin

This paper extends our earlier work on the acceleration of low-energy electrons by plasma turbulence to include the effects of finite temperature of the plasma. We consider the resonant interaction of thermal electrons with the whole…

Astrophysics · Physics 2009-10-30 Julia Pryadko , Vahe Petrosian

The feasibility of generation of bright ultrashort gamma-ray pulses is demonstrated in the interaction of a relativistic electron bunch with a counterpropagating tightly-focused superstrong laser beam in the radiation dominated regime. The…

Atomic Physics · Physics 2015-11-11 Jian-Xing Li , Karen Z. Hatsagortsyan , Benjamin J. Galow , Christoph H. Keitel

Nonsequential multiple ionization of atoms in intense laser fields is initiated by a recollision between an electron, freed by tunneling, and its parent ion. Following recollision, the initial electron shares its energy with several bound…

Atomic Physics · Physics 2009-11-11 X. Liu , C. Figueira de Morisson Faria , W Becker , P. B. Corkum

We prove approach to thermal equilibrium for the fully Hamiltonian dynamics of a dynamical Lorentz gas, by which we mean an ensemble of particles moving through a $d$-dimensional array of fixed soft scatterers that each possess an internal…

Statistical Mechanics · Physics 2015-05-20 S. De Bievre , P. E. Parris

We propose a kinetic model of transient nonequilibrium phenomena in metals exposed to ultrashort laser pulses when heated electrons affect the lattice through direct electron-phonon interaction. This model describes the destruction of a…

Statistical Mechanics · Physics 2009-10-31 L. A. Falkovsky , E. G. Mishchenko

The massive, real scalar field described by the Klein-Gordon equation in one spatial dimension is the most elementary example of a bosonic quantum field theory. It has been investigated for many decades either as a simple academic theory or…

Mesoscale and Nanoscale Physics · Physics 2025-03-27 Tobias Boorman , Bernd Braunecker

Collisions between heavy atomic nuclei at ultra-relativistic energies are carried out at particle colliders to produce the quark-gluon plasma, a state of matter where quarks and gluons are not confined into hadrons, and colour degrees of…

Nuclear Theory · Physics 2020-10-01 Fernando G. Gardim , Giuliano Giacalone , Matthew Luzum , Jean-Yves Ollitrault