Generation and regulation of electron vortices in an underdense plasma by Laguerre-Gaussian laser pulses

Punia, Sheetal; Malik, Hitendra K.

doi:10.1016/j.rinp.2020.103216

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…The induced space-charge field balancing the ponderomotive force is estimated as the quasistatic electrostatic field ⃗ E S ∝ rr. The doughnut profile of the incident laser beam gives rise to the formation of the doughnut-shaped plasma channel (0.6r 0 < r < 1.6r 0 ), as we have seen in our earlier investigation [38]. This not only confines the motion of the electrons with the help of these quasistatic magnetic fields but also focuses the laser beam.…”

Section: Quasistatic Fields Generation In Collisional Plasmamentioning

confidence: 52%

Investigating pair-production by Breit–Wheeler process in a collisional plasma

Malik¹,

Punia²

2022

Laser Phys. Lett.

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Positrons have many potential applications in the field of high-energy nuclear and particle physics. For the generation of such high-energy positrons, we propose a mechanism via an interaction of optical vortex laser beams with collisional plasma. Based on the multiphoton Breit–Wheeler mechanism, the production of electron–positron pairs shows to be strongly dependent on the energy associated with the synchrotron radiation. Such radiations are emitted by accelerated charged particles in the plasma channel under quasistatic spontaneous magnetic field that confines the motion of the electrons. For the precise regulation of the accelerated positrons important quantities such as the probabilistic generation of positrons and the angular momentum of the plasma electrons are evaluated and discussed. It is observed that the use of the incident Laguerre–Gaussian laser beam helps to generate on-axis sheath formation to focus and accelerate the produced positrons.

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Section: Quasistatic Fields Generation In Collisional Plasmamentioning

confidence: 52%

Investigating pair-production by Breit–Wheeler process in a collisional plasma

Malik¹,

Punia²

2022

Laser Phys. Lett.

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“…Above discussion reveals that the better results are obtained for the lasers whose intensity carries stronger gradient. Such lasers have been found to create electron vortices [18] and create plasma channels [19] in addition to their self-focusing and frequency shifting [20]. The point of greater flexibility in frequency difference in the present proposal can be exploited for the application in radiation generation [21].…”

Section: Comparison and Confirmation By Mathematical Calculationsmentioning

confidence: 97%

Uncovering the remarkable contribution of lasers peak intensity region in holography

et al. 2021

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For the scheme of two colour lasers in interference and holography, we uncover remarkable contribution of focusing region (spread) of the peak intensity of superposing laser beams based on the numerical studies and confirm it by mathematical calculations. The pulses having peak intensity for a wider region create better interference pattern, leading to higher modulation depth. Also, such beams having a stronger intensity gradient enhance the range of frequency detuning (difference), which would ease the experimentation in getting better holograms. A comparison of the results achieved with such beams is done with the most commonly used Gaussian beams for the better understanding of the concept for the advancement in holography.

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Comparative optimization of electron trapping and acceleration using magnetized linear and circular phase-modulated lasers

Rajput

2024

J Opt

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Generation and regulation of electron vortices in an underdense plasma by Laguerre-Gaussian laser pulses

Cited by 6 publications

References 33 publications

Investigating pair-production by Breit–Wheeler process in a collisional plasma

Investigating pair-production by Breit–Wheeler process in a collisional plasma

Uncovering the remarkable contribution of lasers peak intensity region in holography

Comparative optimization of electron trapping and acceleration using magnetized linear and circular phase-modulated lasers

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