Sensitiveness of axial magnetic field on electron acceleration by a radially polarized laser pulse in vacuum

Ghotra, Harjit Singh; Kant, Niti

doi:10.1016/j.optcom.2015.07.058

Cited by 29 publications

(10 citation statements)

References 21 publications

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“…2012) and proton/ion (Salamin 2010 a ; Li et al. 2012; Ghotra & Kant 2015) acceleration. Let us define the laser propagation direction to be along .…”

Section: Introductionmentioning

confidence: 99%

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

et al. 2022

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We employ the $\lambda ^{3}$ regime where a near-single-cycle laser pulse is tightly focused, thus providing the highest possible intensity for the minimal energy at a certain laser power. The quantum electrodynamics processes in the course of the interaction of an ultra-intense laser with a solid target are studied via three-dimensional particle-in-cell simulations, revealing the generation of copious $\gamma$ -photons and electron–positron pairs. A parametric study of the laser polarisation, target thickness and electron number density shows that a radially polarised laser provides the optimal regime for $\gamma$ -photon generation. By varying the laser power in the range of 1 to 300 PW we find the scaling of the laser to $\gamma$ -photon energy conversion efficiency. The laser-generated $\gamma$ -photon interaction with a high- $Z$ target is further studied using Monte Carlo simulations revealing further electron–positron pair generation and radioactive nuclide creation.

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“…2012) and proton/ion (Salamin 2010 a ; Li et al. 2012; Ghotra & Kant 2015) acceleration. Let us define the laser propagation direction to be along .…”

Section: Introductionmentioning

confidence: 99%

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

et al. 2022

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“…Using different laser-beam profiles and polarizations, the effects of an externally applied magnetic field, laser-spot size, laser-pulse duration, laser intensity, and the initial phase in improving the quality and energies of the accelerated beams have been reported [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Electron Acceleration by a radially polarised cosh-Gaussian laser beam in vacuum

Singh¹,

Rajput²,

Ghotra³

et al. 2021

Commun. Theor. Phys.

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In this paper, a radially polarised cosh-Gaussian laser beam (CGLB) is used to study the electron acceleration produced in vacuum. A highly energetic electron beam can be achieved by a CGLB, even with comparatively low-powered lasers. The properties of a CGLB cause it to focus earlier, over a shorter duration than a Gaussian laser beam, which makes it suitable for obtaining high energies over small durations. It is found that the energy gained by the electrons strongly depends upon the decentering parameter of the laser profile. It is also observed that for a fixed value of energy gain, if the decentering parameter is increased, then the intensity of the laser field decreases. The dependence of the energy gained by electrons on the laser intensity and the laser-spot size is also studied.

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“…The study shows that on laser driven electron acceleration use low-order Gaussian or Bessel beams [21][22][23][24]. Some parameters such as the laser parameters, pulse polarizations, beam width, initial phase, tight focusing, frequency amplifications, chirped-pulse amplification (CPA), and transverse electromagnetic (TEM) modes, these were analysed for the generation of high energy electron [7,[25][26][27][28]. Some people show that the study electron energy gain for higher modes is high, but it suffers with de-phasing of electron at shorter distance in the absence of any additional magnetic field [29], also the role of distinct mode indices under the influence of axial magnetic field can be utilized for the formulation of desired-sized accelerators based on the accelerating distance of electron.…”

Section: Introductionmentioning

confidence: 99%

Electron Injection for Direct Acceleration by A Gaussian Laser Field Under the Influence of Azimuth Magnetic Field

Singh

Sandeep

Kaur³

2019

Jour. Atomic Mole. Conden. Nano Phys.

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Electron injection for direct acceleration by a circularly polarized Gaussian laser field under the influence of azimuth magnetic field is studied. The electron energy gain, γ versus electron's injection angle δ at different values laser intensity parameters and laser spot size shows the energy enhancement on increasing the parameters. For a small change in angle of injection then there appears a significant change in electron energy gain also for the variation of energy gain and magnetic field energy gain increases when value of δ is 8.5, 8.0, 13.5 and 13, respectively. It is observed that δ should be small and optimized for appropriate momentum to maximize the electron energy gain due to a relativistic longitudinal momentum and the variation of the scattering angle of the electron θ with respect to electron's injection angle δ in the presence of magnetic field shows a relatively lower scattering is observed with optimized values of injection angle in the presence of magnetic field.

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Sensitiveness of axial magnetic field on electron acceleration by a radially polarized laser pulse in vacuum

Cited by 29 publications

References 21 publications

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

Gamma-ray flash in the interaction of a tightly focused single-cycle ultra-intense laser pulse with a solid target

Electron Acceleration by a radially polarised cosh-Gaussian laser beam in vacuum

Electron Injection for Direct Acceleration by A Gaussian Laser Field Under the Influence of Azimuth Magnetic Field

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