Prospects and directions of CO2 laser-driven accelerators

Tochitsky, Sergei; Fiúza, Frederico; Joshi, C.

doi:10.1063/1.4965594

Cited by 15 publications

(11 citation statements)

References 20 publications

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“…As of now the CO 2 lasers are efficient industrial lasers in the market for continuous wave (CW) and relatively long pulse applications [29][30][31]. They have not been as widely explored for the short pulse (sub-nano or pico second) applications.…”

mentioning

confidence: 99%

Excitation of KdV magnetosonic solitons in plasma in the presence of an external magnetic field

Kumar

Shukla

Verma

et al. 2019

Plasma Phys. Control. Fusion

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The interaction of laser with plasmas leads to many interesting phenomena which includes laser energy absorption, mode conversion, energetic particle generation etc. In this work, the excitation of Korteweg -de Vries (KdV) Alfven solitons in plasma is demonstrated with the help of 2-D Particle -In -Cell (PIC) simulations. For this purpose, the propagation of a pulsed CO2 (with a wavelength of 10µm ) laser normally incident on an overdense plasma target is considered in the presence of an external magnetic field. The magnitude of the external magnetic field is chosen so as to have the electrons magnetized and ions unmagnetized at the laser frequency. These solitons propagate stably and are observed to be responsible for energetic electron generation as the background undisturbed electrons of the medium get reflected from its front. It is also shown that subsequently, transverse modulations appear in the structure which grow with time. With recent technological advancements in the development of short pulse CO2 lasers and also on the generation of magnetic fields of the order of tens of kilo -Tesla in the laboratory, these studies have practical relevance and have a possibility of getting replicated in laboratory in near future.

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mentioning

confidence: 99%

Excitation of KdV magnetosonic solitons in plasma in the presence of an external magnetic field

Kumar

Shukla

Verma

et al. 2019

Plasma Phys. Control. Fusion

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“…One expects that in near future this limit will increase. We feel that it is only a matter of time when we will witness magnetic field of the order of 10s of kilo Tesla at which the mechanism presented in this manuscript can be experimentally verified in laboratory with a long wavelength CO 2 lasers which have now already been made to operate in the pulsed high-intensity mode [24][25][26][27].…”

Section: Discussionmentioning

confidence: 91%

A new mechanism of direct coupling of laser energy to ions

Vashistha¹,

Mandal²,

Kumar³

et al. 2020

New J. Phys.

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The well-known schemes (e.g. Brunel, resonance absorption, JxB heating etc.) couple laser energy to the lighter electron species of the plasma. In this work, a fundamentally new mechanism of laser energy absorption directly to the heavier ion species has been proposed. The mechanism relies on the difference between the ExB drifts of electron and ions in the oscillating electric field of the laser and an external magnetic field to create charge density perturbations. The proposed mechanism is verified with the help of Particle -In -Cell (PIC) simulations using OSIRIS4.0.

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“…In recent years there has been a lot of progress (both fundamental and technological) in the area of laser plasma interaction studies [1]. The development of low frequency pulsed CO 2 lasers [2][3][4] and the possibility of generating strong magnetic fields (e.g. of the order of Kilo Tesla has already been achieved [5] and there are proposals to generate Mega Tesla [6] fields) are two developments which have opened up possibilities of carrying out experiments in a new direction involving laser interacting with magnetized plasma.…”

Section: Introductionmentioning

confidence: 99%

Particle-In-Cell observations of Brillouin scattering for laser interacting with magnetized overdense plasma

Goswami¹,

Juneja²,

Trishul³

et al. 2022

Preprint

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One dimensional Particle-in-cell simulations using OSIRIS-4.0 has been conducted to study the interaction of a laser electromagnetic pulse with an overdense magnetized plasma target. The external magnetic field has been chosen to be directed along the laser propagation direction. This geometry supports the propagation of right (R) and left (L) circularly polarised electromagnetic waves in the plasma. The laser pulse is allowed to propagate inside the plasma when its frequency falls in the pass band of the dispersion curves of L and/or R waves. The strength of the applied external magnetic field is chosen as a parameter to ensure that the laser frequency lies in the appropriate pass band. It is demonstrated that for all possible polarization of the incident laser, parametric process involving a scattered Electromagnetic wave and an electrostatic mode occur. The parametric process has been identified as that due to the Brillouin back scattering process.

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Prospects and directions of CO2 laser-driven accelerators

Cited by 15 publications

References 20 publications

Excitation of KdV magnetosonic solitons in plasma in the presence of an external magnetic field

Excitation of KdV magnetosonic solitons in plasma in the presence of an external magnetic field

A new mechanism of direct coupling of laser energy to ions

Particle-In-Cell observations of Brillouin scattering for laser interacting with magnetized overdense plasma

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