Enhanced electron acceleration by a chirped tightly focused laser in vacuum in the presence of axial magnetic field

Kant, Niti; Rajput, Jyoti; Singh, Arvinder

doi:10.1140/epjd/e2020-100241-y

Cited by 19 publications

(5 citation statements)

References 37 publications

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“…Tightly focused chirped laser pulse with external magnetic field has a great impact on electron acceleration in vacuum. Kant et al, [24] also verified it. They showed that electron can enhance energy up to 5.78 GeV at intensity 1.38 × 10 20 W/ cm 2 and 8.5 MG optimum axial magnetic field.…”

Section: Introductionmentioning

confidence: 78%

Comparison of different laser pulse envelopes with frequency chirp for efficient electron acceleration in vacuum

Pramanik

Ghotra

Kant

et al. 2022

J. Phys.: Conf. Ser.

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In the present manuscript, we have investigated the effect of chirped laser pulse envelope to study electron acceleration in vacuum. For this purpose, we have chosen two different pulse shapes, i.e trapezoidal pulse envelope and Sin4 pulse envelope. Electron has been injected axially to the front of the tested envelopes. In all calculations, the front end of each pulse is presumed to have caught up with the electron at t = 0 at the coordinate origin. The relativistic Newton-Lorentz equations of motion of electron in the field of the laser pulse have been analytically and numerically solved. By optimizing laser and frequency chirp parameters, the energy gain of the order of GeV is obtained, and it has been noticed that under the similar range of phases (0 to 2π) and laser intensity parameter (a0 = 3), trapezoidal pulse envelope shows better result than Sin4 pulse envelope on effective electron acceleration in vacuum.

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Section: Introductionmentioning

confidence: 78%

Comparison of different laser pulse envelopes with frequency chirp for efficient electron acceleration in vacuum

Pramanik

Ghotra

Kant

et al. 2022

J. Phys.: Conf. Ser.

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“…Mehta et al [14] have studied effect of chirp on terahertz generation. Recently Kant et al [15] have studied chirp effect on electron acceleration in vacuum in the presence of axial magnetic field. Hence, it is clear that chirp laser pulse is an important parameter for wake-field study.…”

Section: Introductionmentioning

confidence: 99%

To study the effect of laser frequency-chirp on trapped electrons in laser wakefield acceleration

Sharma

Kumar

2022

J. Phys.: Conf. Ser.

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The wakefield excitation and electron acceleration is investigated in the presence of laser pulse with and without frequency-chirp in an under-dense plasma via particle in cell simulation. For this purpose, first 1D model of laser wakefield acceleration is revisited. The analytical expressions for the longitudinal wake-potential and wakefield generated behind the laser pulse are obtained. The results show that the wake-fields excited by laser pulses are strongly dependent on the chirp parameter. These results could be very useful as a starting point for optimization studies for a real LWFA experiment.

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“…In CAS scheme, the laser propagating path's core captures and accelerates electrons to relativistic energies in the order of GeV, with accelerating gradients of GeV m −1 [8]. Laser beam profiles, polarization, the external magnetic field [1,9,10], and other laser parameters have a significant impact on this mechanism. A number of theoretical [11][12][13][14] and experimental [15][16][17][18] studies have already been reported for effective acceleration.…”

Section: Introductionmentioning

confidence: 99%

Efficient electron acceleration by using Hermite-cosh-Gaussian laser beam in vacuum

Pramanik¹,

Ghotra²,

Kant³

et al. 2022

Laser Phys. Lett.

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The electron acceleration in vacuum has been studied theoretically using a radially polarized (RP) Hermite-cosh-Gaussian (HChG) laser beam. Even if the laser’s power is low, the RP HChG laser beam is quite effective and responsible for producing high energy electron. Due to the beauty (earlier focus) of such a laser beam, it is significantly better suited to acquiring GeV order energy over short periods of time than other laser beams. The electron acceleration process is strongly influenced by two more adjustable parameters associated with this beam: decentered parameter (b) and Hermite order (s). Throughout this investigation, better trapping phenomena have been identified. The effects of changing the intensity parameter ( a 0 ), the beam waist width ( r 0 ′ ), the decentered parameter (b), and the order of the Hermite function on electron energy gain have been investigated.

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Enhanced electron acceleration by a chirped tightly focused laser in vacuum in the presence of axial magnetic field

Cited by 19 publications

References 37 publications

Comparison of different laser pulse envelopes with frequency chirp for efficient electron acceleration in vacuum

Comparison of different laser pulse envelopes with frequency chirp for efficient electron acceleration in vacuum

To study the effect of laser frequency-chirp on trapped electrons in laser wakefield acceleration

Efficient electron acceleration by using Hermite-cosh-Gaussian laser beam in vacuum

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