Undepleted direct laser acceleration

I Cohen, T Meir, K Tangtartharakul, L Perelmutter… - Science …, 2024 - science.org
Intense lasers enable generating high-energy particle beams in university-scale
laboratories. With the direct laser acceleration (DLA) method, the leading part of the laser …

Creation and direct laser acceleration of positrons in a single stage

B Martinez, B Barbosa, M Vranic - Physical Review Accelerators and Beams, 2023 - APS
Relativistic positron beams are required for fundamental research in nonlinear strong field
QED, plasma physics, and laboratory astrophysics. Positrons are difficult to create and …

Intense laser interaction with micro-bars

M Elkind, I Cohen, D Blackman, T Meir… - Scientific Reports, 2023 - nature.com
Intense laser fields interact very differently with micrometric rough surfaces than with flat
objects. The interaction features high laser energy absorption and increased emission of …

Laser-based approach to measure small nuclear cross sections in plasma

J Feng, J Qi, H Zhang, S Chen, M Zhu, X Hu… - Proceedings of the …, 2024 - pnas.org
We demonstrate an approach successfully measuring very small nuclear isomeric excitation
cross sections (on the order of 10 to 100 picobarns) via laser–cluster interaction. The …

Laser Pulse Interaction with Plasma under Conditions of Broken Axial Symmetry

EO Dmitriev, PA Korneev - Bulletin of the Lebedev Physics Institute, 2023 - Springer
Nonlinear interaction of strong laser pulses with matter may lead to the excitation of self-
consistent motion of charges and generation of a magnetic field, remaining in the plasma …

Direct laser acceleration: A model for the electron injection from the walls of a cylindrical guiding structure

P Valenta, D Maslarova, R Babjak, B Martinez… - Physical Review E, 2024 - APS
We use analytical methods and particle-in-cell simulation to investigate the origin of
electrons accelerated by the process of direct laser acceleration driven by high-power laser …

High brilliance γ-ray generation from the laser interaction in a carbon plasma channel

C Heppe, N Kumar - Frontiers in Physics, 2022 - frontiersin.org
The generation of collimated, high brilliance γ-ray beams from a structured plasma channel
target is studied by means of 2D PIC simulations. Simulation results reveal an optimum laser …

Multi-photon stimulated grasers assisted by laser-plasma interactions

CJ Yang, KM Spohr, D Doria - arXiv preprint arXiv:2404.10025, 2024 - arxiv.org
We investigate theoretically the possibility of achieving the stimulated amplification of
$\gamma $-rays. Herein, our approach circumvents the so-called``graser dilemma" through …

Direct Laser Acceleration of Bethe-Heitler positrons in laser-channel interactions

B Martinez, R Babjak, M Vranic - arXiv preprint arXiv:2405.20930, 2024 - arxiv.org
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 …

A new scheme for isomer pumping and depletion with high-power lasers

CJ Yang, KM Spohr, M Cernaianu, D Doria… - arXiv preprint arXiv …, 2024 - arxiv.org
We propose a novel scheme for the population and depletion of nuclear isomers. The
scheme combines the $\gamma $-photons with energies $\gtrsim 10$ keV emitted during …