Direct laser acceleration of Bethe-Heitler positrons in laser-channel interactions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F25%3A00647879" target="_blank" >RIV/61389021:_____/25:00647879 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.aps.org/pre/abstract/10.1103/PhysRevE.111.035203" target="_blank" >https://journals.aps.org/pre/abstract/10.1103/PhysRevE.111.035203</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevE.111.035203" target="_blank" >10.1103/PhysRevE.111.035203</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Direct laser acceleration of Bethe-Heitler positrons in laser-channel interactions

Popis výsledku v původním jazyce

Positron creation and acceleration is one of the major challenges for constructing future lepton colliders. On the one hand, conventional technology can provide a solution, but at a prohibitive cost and scale. On the other hand, alternative, reduced-scale ideas for positron beam generation could bring this dream closer to reality. Here we propose a plasma-based positron acceleration method using a powerful laser propagating through a dense and narrow plasma channel. A large amount of electrons are injected within the channel during laser propagation. This electron loading creates static fields in the plasma, enabling positrons to be guided transversely while they directly gain energy from the laser field itself. Within this context, we present a theoretical model to describe how the laser injects the electrons and estimate the beam-loaded effective electron density. We validate our theoretical predictions through quasi-3D Particle-In-Cell (PIC) simulations and demonstrate the robustness of this guiding and direct laser acceleration process for positrons. Our approach could pave the way for testing this positron acceleration scheme at ELI Beamlines, showcasing an unprecedentedly high average energy gain rate of a few GeV/mm. The fireball jet produced contains GeV-level electrons, positrons, and x-rays and thus brings unique opportunities for applications for laboratory astrophysics such as mimicking the propagation of fireball jets from gamma-ray bursts and seeding pair cascades taking place in pulsars with different ratios of electrons and positrons.

Název v anglickém jazyce

Direct laser acceleration of Bethe-Heitler positrons in laser-channel interactions

Popis výsledku anglicky

Positron creation and acceleration is one of the major challenges for constructing future lepton colliders. On the one hand, conventional technology can provide a solution, but at a prohibitive cost and scale. On the other hand, alternative, reduced-scale ideas for positron beam generation could bring this dream closer to reality. Here we propose a plasma-based positron acceleration method using a powerful laser propagating through a dense and narrow plasma channel. A large amount of electrons are injected within the channel during laser propagation. This electron loading creates static fields in the plasma, enabling positrons to be guided transversely while they directly gain energy from the laser field itself. Within this context, we present a theoretical model to describe how the laser injects the electrons and estimate the beam-loaded effective electron density. We validate our theoretical predictions through quasi-3D Particle-In-Cell (PIC) simulations and demonstrate the robustness of this guiding and direct laser acceleration process for positrons. Our approach could pave the way for testing this positron acceleration scheme at ELI Beamlines, showcasing an unprecedentedly high average energy gain rate of a few GeV/mm. The fireball jet produced contains GeV-level electrons, positrons, and x-rays and thus brings unique opportunities for applications for laboratory astrophysics such as mimicking the propagation of fireball jets from gamma-ray bursts and seeding pair cascades taking place in pulsars with different ratios of electrons and positrons.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review E

ISSN

2470-0045

e-ISSN

2470-0053

Svazek periodika

111

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

035203

Kód UT WoS článku

001459102200002

EID výsledku v databázi Scopus

2-s2.0-86000512003