Nonlinear interaction of intense laser pulses and an inhomogeneous electron-positron-ion plasma

Cheng, Li-Hong; Tang, Rong-An; Zhang, Aixia; Xue, Ju-Kui

doi:10.1103/physreve.87.025101

Cited by 19 publications

(14 citation statements)

References 25 publications

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“…They found that the kinetic energy of electrons increased by pulse absorption, and energy distribution became non-equilibrium. The interaction of intensive laser fields and relativistic electron-positron-ion plasma was investigated by [15]. Bogachev et al [16] generated an electron-hole pair by the laser beam acting on the material surfaces, which could be used as a dipole antenna.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of laser-bumped electron–hole semiconductor plasma

et al. 2022

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Electron–hole pairs in semiconductors can be stimulated by a laser beam with energy larger than the energy gap of the semiconductor. The interaction between an electron–hole plasma with a laser beam can be a source of instability. The dependence of the instability on the electron and hole temperatures and the unperturbed potential of the incident laser are examined. Using Maxwell’s equations along with electron–hole fluid equations, an evolution equation describing the system is obtained. The latter is reduced to an energy equation that characterizes localized pulse propagation.

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Section: Introductionmentioning

confidence: 99%

Dynamics of laser-bumped electron–hole semiconductor plasma

et al. 2022

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“…2012; Cheng et al. 2013). Abundant production of e–p pairs in the collision of a multi-petawatt laser beam and a solid target is predicted, and the result shows that the positron density can be up to (Liang, Wilks & Tabak 1998; Ridgers et al.…”

Section: Introductionmentioning

confidence: 99%

“…Ion acoustic two-soliton systems in unmagnetized quantum e-p-i plasmas were studied in Mandal et al (2015). The nonlinear dynamics of intense laser pulses in e-p/e-p-i plasma has received a great deal of attention (Berezhiani & Mahajan 1994;Shukla, Marklund & Eliasson 2004;Asenjo et al 2012;Cheng et al 2013). Abundant production of e-p pairs in the collision of a multi-petawatt laser beam and a solid target is predicted, and the result shows that the positron density can be up to 10 26 m −3 (Liang, Wilks & Tabak 1998;Ridgers et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Modified Zakharov–Kuznetsov equation for a non-uniform electron–positron–ion magnetoplasma with kappa-distributed electrons

Ahmad

Masood

2015

J. Plasma Phys.

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We investigate the low-frequency (by comparison with the ion Larmor frequency) electrostatic solitary structures in a spatially non-uniform electron–positron–ion (e–p–i) magnetoplasma with non-Maxwellian electrons. A linear dispersion relation for the obliquely propagating ion acoustic drift wave is derived and it is shown that the non-Maxwellian electron population modifies the dispersion characteristics of the wave under consideration. We also carry out a nonlinear analysis and derive the modified Zakharov–Kuznetsov (MZK) equation for the coupled drift acoustic wave in a non-uniform magnetized plasma. We highlight the differences between the MZK equation and its homogeneous counterpart. We also find the solution of the MZK equation using the tangent hyperbolic method. It is observed that the electron spectral index ${\it\kappa}$, positron concentration, and propagation angle ${\it\alpha}$ alter the structure of the ion acoustic drift solitary waves. The results obtained in this paper may be beneficial to understanding the propagation characteristics of electrostatic drift solitary structures in the interstellar medium and in laboratory experiments where electron–positron plasmas have recently been created by impinging ultra-intense laser pulses on a solid density target at the Lawrence Livermore National Laboratory (LLNL).

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“…They found that a stationary density modification was phase shifted with respect to the wave amplitude, and the density modulation increased with the intensity of a microwave field. In addition, Cheng et al have investigated the non‐linear interaction between an ultra‐short laser beam and an inhomogeneous electron–positron–ion plasma. They have shown that light beam localization occurs at the regions of the highest density, where the modulational instability is strong.…”

Section: Introductionmentioning

confidence: 99%

Increasing the peaks of non‐linear electron density near critical density in terahertz–plasma interaction

Hashemzadeh

2018

Contributions to Plasma Physics

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Increasing the peaks of non-linear electron density in the interaction between high-power terahertz beams and plasmas with electron density and electron temperature ramps is investigated. Considering the linear inhomogeneities and using the non-linear electron density, a non-linear differential equation governing the wave propagation is derived. Results show that the slope of the temperature and density ramps and their signs affect the amplitude and wavelength of oscillations of electric and magnetic fields. These effects are a result of the ponderomotive non-linearity that changes the distribution of plasma density and leads to the modification of electric and magnetic fields. Furthermore, increase or decrease in the electric field amplitude is because of the energy exchange between electrons and electric field. Profiles of the non-linear electron density indicate that, for positive values of temperature ramp, the amplitude of non-linear electron density decreases, and the wavelength of oscillations increases. However, for negative values of temperature ramp, this behaviour is vice versa. It is also illustrated that, close to critical density, electrons become more steepened. Finally, it is concluded that both positive values of density ramp and negative values of temperature ramp increase the peaks of non-linear electron density, especially near the critical density. KEYWORDS density and temperature inhomogeneities, plasma density gratings, ponderomotive non-linearity 1

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Nonlinear interaction of intense laser pulses and an inhomogeneous electron-positron-ion plasma

Cited by 19 publications

References 25 publications

Dynamics of laser-bumped electron–hole semiconductor plasma

Dynamics of laser-bumped electron–hole semiconductor plasma

Modified Zakharov–Kuznetsov equation for a non-uniform electron–positron–ion magnetoplasma with kappa-distributed electrons

Increasing the peaks of non‐linear electron density near critical density in terahertz–plasma interaction

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