Polarized proton acceleration in ultraintense laser interaction with near-critical-density plasmas

Li, Xiaofeng; Gibbon, Paul; Hützen, Anna; Büscher, M.; Weng, Shangkun; Chen, Min; Sheng, Zheng-Ming

doi:10.1103/physreve.104.015216

Cited by 14 publications

(11 citation statements)

References 36 publications

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“…Note that χ for a much heavier lepton or ion is much smaller than that of an electron in the same field. With χ 1, the quantum radiation reaction (RR) effects on the particle's momentum and spin (Sokolov-Ternov effect) are negligible [54][55][56][57][58][59][66][67][68][69][70]. Furthermore, the Stern-Gerlach force is much smaller than the Lorentz force in our simulations (see Fig.…”

mentioning

confidence: 75%

“…The latter is generally pre-produced via Compton scattering [52] or bremsstrahlung [53]. High-energy polarized electron [54][55][56] and proton beams [57][58][59] can also be produced through laser-driven wakefield acceleration of prepolarized low-energy ones, generated via a photodissociated hydrogen halide gas target [60][61][62]. Unfortunately, ultrafast spin manipulation (in particular, spin rotation from TSP to LSP state) of these beams is still a great challenge.…”

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confidence: 99%

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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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mentioning

confidence: 75%

mentioning

confidence: 99%

All-optical ultrafast spin rotation for relativistic charged particle beams

Wei¹,

Wan²,

Salamin³

et al. 2022

Preprint

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“…For the former, a significantly higher laser vector potential a 0 is required as compared to the case of the much less inert electrons. Some theoretical studies regarding this topic have been published by Hützen et al [12] and Li et al [13]. In contrast, MVA can already occur at currently achievable laser energies, although higher energies would still be required for parts of the future applications [14].…”

Section: Introductionmentioning

confidence: 99%

Acceleration of spin-polarized proton beams via two parallel laser pulses

Reichwein¹,

Büscher²,

Pukhov³

2022

Preprint

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We present a setup for highly polarized proton beams using two parallel propagating laser pulses that are polarized in opposite direction. This mechanism is examined utilizing particle-in-cell simulations and compared to a single-pulse setup commonly used for magnetic vortex acceleration. We find that the use of the dual-pulse setup allows for peak energies of 374 MeV and good angular spread for two pulses with normalized laser vector potential a0 = 100. Compared to a single pulse, we further observe better polarization of the obtained bunch.

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“…At present, with the rapid developments of ultraintense ultrashort laser techniques, the state-of-the-art laser pulses can achieve the peak intensities of about 10 23 W/cm 2 with a pulse duration of tens of femtoseconds and an energy fluctuation of about 1% [30][31][32]. 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].…”

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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Polarized proton acceleration in ultraintense laser interaction with near-critical-density plasmas

Cited by 14 publications

References 36 publications

All-optical ultrafast spin rotation for relativistic charged particle beams

All-optical ultrafast spin rotation for relativistic charged particle beams

Acceleration of spin-polarized proton beams via two parallel laser pulses

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

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