High quality ion acceleration through the interaction of two matched counterpropagating transversely polarized Gaussian lasers with a flat foil target

Zhou, Wei-Jun; Hong, Xue-Ren; Xie, Bai-Song; Yang, Yang; Wang, Li; Tian, Junliang; Tang, Rong-An; Duan, Wen‐Shan

doi:10.1103/physrevaccelbeams.21.021301

Cited by 5 publications

(3 citation statements)

References 43 publications

(45 reference statements)

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“…For the given parameters our simulations show that the SEs change significantly the shift of the proton energy spectra and the width of spectral distribution after scattering, which can serve as a signature of SEs. The compression of the proton energy distribution, seen previously beyond the QRDR in two-color [63] or two-intensity [64] laser setups, is shown to be significant also in QRDR.…”

Section: Introductionmentioning

confidence: 63%

“…Furthermore, we underline that our configuration can also be employed to compress the proton energy spectra, as shown in figure 7, in the QRDR (beyond the QRDR, similar setups have been considered to compress the proton energy spectra [63,64]). As the front electrons in the accelerated plasma are decelerated or even reflected by the scattering laser pulse due to the radiation energy loss, the front protons are decelerated due to the charge separation force.…”

Section: Results and Analysismentioning

confidence: 99%

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Imprint of the stochastic nature of photon emission by electrons on the proton energy spectra in the laser-plasma interaction

Wan¹,

Xue²,

Dou³

et al. 2019

Plasma Phys. Control. Fusion

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The impact of stochasticity effects (SEs) in photon emissions on the proton energy spectra during laser-plasma interaction is theoretically investigated in the quantum radiation-dominated regime, which may facilitate SEs experimental observation. We calculate the photon emissions quantum mechanically and the plasma dynamics semiclassically via two-dimensional particle-in-cell simulations. An ultrarelativistic plasma generated and driven by an ultraintense laser pulse head-on collides with another strong laser pulse, which decelerates the electrons due to radiation-reaction effect and results in a significant compression of the proton energy spectra because of the charge separation force. In the considered regime the SEs are demonstrated in the shift of the mean energy of the protons up to hundreds of MeV. This effect is robust with respect to the laser and target parameters and measurable in soon available strong laser facilities. * Wenchao.Yan@eli-beams.eu †

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Section: Introductionmentioning

confidence: 63%

Section: Results and Analysismentioning

confidence: 99%

Imprint of the stochastic nature of photon emission by electrons on the proton energy spectra in the laser-plasma interaction

Wan¹,

Xue²,

Dou³

et al. 2019

Plasma Phys. Control. Fusion

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“…Among them, laser wakefield acceleration [43] and laser ponderomotive acceleration [44,45] are generally used to realize electron acceleration and constraint. Recently, the radiation pressure acceleration (RPA) of ultra-thin foils has also been applied to γ-ray emission and dense e e +pair production [46], as it is capable of obtaining high energy electrons and quasi-monoenergetic ion beams [47][48][49][50]. However, in this mechanism, the laser intensity of 5× 10 23 W cm −2 is too high to obtain experimentally and, on the other hand, the plane target cannot prevent the electrons from transverse escaping, while the radiative trapping [51] and pair plasma compression induced by standing wave fields can also be used to confine high-energy charged particles [6].…”

Section: Introductionmentioning

confidence: 99%

High density γ-ray emission and dense positron production via multi-laser driven circular target

Hou¹,

Xie²,

Lv³

et al. 2019

Plasma Sci. Technol.

Self Cite

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A diamond-like carbon circular target is proposed to improve the γ-ray emission and pair production with lasers intensity of 8 × 10 22 W/cm 2 by using two-dimensional particle-in-cell simulations with quantum electrodynamics. It is found that the circular target can significantly enhance the density of γ-photons than plane target when two colliding circularly polarized lasers irradiate the target. By multi-lasers irradiate the circular target, the optical trap of lasers can prevent the high energy electrons accelerated by laser radiation pressure from escaping. Hence, high density as 5164n c γ-photons is obtained through nonlinear Compton back-scattering. Meanwhile, 2.7 × 10 11 positrons with average energy of 230 MeV is achieved via multiphoton Breit-Wheeler process. Such ultrabright γ-ray source and dense positrons source can be useful to many applications. The optimal target radius and laser mismatching deviation parameters are also discussed in detail.

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Even-order harmonic generation from nonlinear Thomson backscatter in a tightly focused Gaussian laser pulse

Hong

Wei

et al. 2022

Physics of Plasmas

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The electron dynamics and the Thomson backscattering spectra for an electron accelerating in a tightly focused Gaussian laser pulse are first investigated in detail. It is found that for a tightly focused Gaussian laser pulse, the ponderomotive force introduced due to the non-uniform intensity distribution of the laser pulse has the tendency to push out the electron from the laser pulse, which leads to the trajectory symmetry-breaking of the electron and then the generation of the even-order harmonics at the same time. Further, for the tightly focused Gaussian laser pulse, changes in several laser parameters, such as the increase of the laser peak amplitude, lengthening of the pulse width, and decrease of the beam waist, lead earlier to the relative ejected position of the electron to the laser pulse, which causes the more obvious trajectory symmetry-breaking of the electron, and then the more intensive peak intensity of the even-order harmonics. It is different from the well-known results of the plane waves and the Gaussian laser pulse with uniform transverse intensity distribution and provides a possible way for the generation of the even-order harmonics in nonlinear Thomson backscattering.

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High quality ion acceleration through the interaction of two matched counterpropagating transversely polarized Gaussian lasers with a flat foil target

Cited by 5 publications

References 43 publications

Imprint of the stochastic nature of photon emission by electrons on the proton energy spectra in the laser-plasma interaction

Imprint of the stochastic nature of photon emission by electrons on the proton energy spectra in the laser-plasma interaction

High density γ-ray emission and dense positron production via multi-laser driven circular target

Even-order harmonic generation from nonlinear Thomson backscatter in a tightly focused Gaussian laser pulse

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