Generation of arbitrarily polarized GeV lepton beams via nonlinear Breit-Wheeler process

Xue, Kun; Guo, Ren-Tong; Wan, Feng; Shaisultanov, Rashid; Chen, Yueyue; Xu, Zhen; Ren, Xiang; Hatsagortsyan, Karen Z.; Keitel, Christoph H.; Li, Jianxing

doi:10.1016/j.fmre.2021.11.022

Cited by 13 publications

(16 citation statements)

References 40 publications

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“…Efficient laser-driven plasma accelerators with a gradient exceeding 0.1 TeV/m can provide dense tens-of-MeV proton [33,34] and multi-GeV electron beams [35] in experiments, and thus have the potential to significantly accelerate the pre-polarized low-energy proton [36][37][38] and electron beams [39][40][41]. Moreover, the TSP electron (positron) beam can be directly produced via nonlinear Compton scattering (nonlinear Breit-Wheeler pair production) in a standingwave [42][43][44], elliptically polarized [45,46], or bichromatic laser pulses [47][48][49][50] due to the quantum radiative spin effects, and the LSP ones can be produced via the helicity transfer from circularly polarized γ photons in linear [51] or nonlinear Breit-Wheeler processes [52,53], which are generally preproduced via Compton scattering [54,55] or bremsstrahlung [56]. Very recently, an all-optical spin rotation method has been proposed to generate arbitrarily spin polarized (ASP) lepton and ion beams [57].…”

Section: Introductionmentioning

confidence: 99%

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Lu,

Zhao,

Wan

et al. 2022

Preprint

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Generation of arbitrarily spin polarized muon pairs is investigated via polarized e − e + collision. We calculate the fully spin-resolved cross section dσ e − e + →µ − µ + and utilize the Monte Carlo method of binary collision to describe the production and polarization processes of muon pairs. We find that, due to the dependence of mixed helicities on the scattering angle, arbitrarily polarized muon pairs with both of the longitudinal and transverse spin components can be produced. The collision of tightly collimated electron and positron beams with highly longitudinal polarization and nC charge can generate about 40% muon pairs with longitudinal polarization and about 60% muon pairs with transverse polarization. The compact high-flux e − e + → µ − µ + muon source could be implemented through the next-generation laser-plasma linear collider, and would be essential to facilitate the investigation of fundamental physics and the measurement technology in broad areas.

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Section: Introductionmentioning

confidence: 99%

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Lu,

Zhao,

Wan

et al. 2022

Preprint

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“…TSP electron and positron beams can be directly produced by strongfield QED processes, such as nonlinear Compton scattering (NLC) [nonlinear Breit-Wheeler (NBW) pair production] in elliptically polarized [45,46] or bichromatic laser pulses [47][48][49][50], due to the quantum radiative spin effects. LSP beams can be produced via the helicity transfer from CP γ photons in NBW process [51,52], which are generally pre-produced via Compton scattering [53,54] or bremsstrahlung [29].…”

Section: Introductionmentioning

confidence: 99%

“…In this regime, the dynamics of particles can be considered to be quasiclassical. The polarized NLC and NBW processes are extensively investigated employing the QO approach in the LCFA regime [51,52,54,74] and in the weakly nonlinear regime [75,76]. It has the advantage of allowing for numerical solutions in arbitrary electromagnetic fields, which is favored in the investigation of interactions between ultraintense tightly-focused laser pulses and ultrarelativistic electron beams.…”

Section: Introductionmentioning

confidence: 99%

“…It has the advantage of allowing for numerical solutions in arbitrary electromagnetic fields, which is favored in the investigation of interactions between ultraintense tightly-focused laser pulses and ultrarelativistic electron beams. A series of Monte Carlo (MC) algorithms based on the QO theory have been developed to study the spin and polarization effects in strong-field QED processes [46,49,51,52]. Some of those algorithms are also coupled to particle-in-cell (PIC) codes to study the QED of plasmas [77,78].…”

Section: Introductionmentioning

confidence: 99%

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Production of polarized particle beams via ultraintense laser pulses

Sun¹,

Zhao²,

Xue³

et al. 2022

Preprint

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High-energy spin-polarized electron, positron, and γ-photon beams have many significant applications in the study of material properties, nuclear structure, particle physics, and high-energy astrophysics. Thus, efficient production of such polarized beams attracts a broad spectrum of research interests. This is driven mainly by the rapid advancements in ultrashort and ultraintense laser technology. Currently available laser pulses can achieve peak intensities in the range of 10 22 − 10 23 Wcm −2 , with pulse durations of tens of femtoseconds. The dynamics of particles in laser fields of the available intensities is dominated by quantum electrodynamics (QED) and the interaction mechanisms have reached regimes spanned by nonlinear multiphoton absorbtion (strong-field QED

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“…Relatively low-cost and efficient laser-driven plasma accelerators with a gradient exceeding 0.1 TeV/m are capable of providing dense tensof-MeV proton [36][37][38] and multi-GeV electron beams [39]. In all-optical setups, leptons can be transversely polarized in a standing-wave [40][41][42], elliptically polarized [43,44], or bichromatic laser pulses [45][46][47][48] due to the quantum radiative spin-flip effect, since the transverse laser field dominates the spin polarization process; while the more useful LSP lepton beams can only be produced indirectly via the helicity transfer from cir-cularly polarized γ photons in linear [49] or nonlinear Breit-Wheeler pair production processes [50,51]. The latter is generally pre-produced via Compton scattering [52] or bremsstrahlung [53].…”

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confidence: 99%

All-optical ultrafast spin rotation for relativistic charged particle beams

Wei¹,

Wan²,

Salamin³

et al. 2022

Preprint

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An all-optical method of ultrafast spin rotation is put forward to precisely manipulate the polarization of relativistic charged particle beams of leptons or ions. In particular, laser-driven dense ultrashort beams are manipulated via single-shot interaction with a co-propagating moderate temporally asymmetric (frequency-chirped or subcycle THz) laser pulse. Using semi-classical numerical simulations, we find that in a temporally asymmetrical laser field, the spin rotation of a particle can be determined from the flexibly controllable phase retardation between its spin precession and momentum oscillation. An initial polarization of a proton beam can be rotated to any desired orientation (e.g., from the common transverse to the more useful longitudinal polarization) with extraordinary precision (better than 1%) in tens of femtoseconds using a feasible frequencychirped laser pulse. Moreover, the beam qualities, in terms of energy and angular divergence, can be significantly improved in the rotation process. This method has potential applications in various areas involving ultrafast spin manipulation, like laser-plasma, laser-nuclear and high-energy particle physics.

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Generation of arbitrarily polarized GeV lepton beams via nonlinear Breit-Wheeler process

Cited by 13 publications

References 40 publications

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Generation of arbitrarily polarized muon pairs via polarized $e^-e^+$ collision

Production of polarized particle beams via ultraintense laser pulses

All-optical ultrafast spin rotation for relativistic charged particle beams

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