TY - CONF
T1 - The Role of Ionization Injection in Direct Laser Acceleration
AU - Cohen, Itamar
AU - Meir, Talia
AU - Tangtartharakul, Kavin
AU - Perelmutter, Lior
AU - Elkind, Michal
AU - Gershuni, Yonatan
AU - Levanon, Assaf
AU - Arefiev, Alexey V.
AU - Pomerantz, Ishay
N1 - Publisher Copyright:
Optica Nonlinear Optics Topical Meeting 2023 © Optica Publishing Group 2023 © 2023 The Author(s)
PY - 2023
Y1 - 2023
N2 - For the past two decades, intense lasers have supported new schemes for generating high-energy particle beams in university-scale laboratories. With the direct laser acceleration (DLA) method, the leading part of the laser pulse ionizes the target material and forms a positively charged ion plasma channel into which electrons are injected and accelerated. DLA has been realized over a wide range of laser parameters, using low-atomic-number target materials. In this presented work we reveal that at these higher laser intensities, the leading edge of the laser pulse depletes the target material of its ionization electrons prematurely. We demonstrate experimentally and numerically that for efficient DLA to prevail, a target material of sufficiently high atomic number is required to maintain the injection of ionization electrons at the peak intensity of the pulse when the DLA channel is already formed.
AB - For the past two decades, intense lasers have supported new schemes for generating high-energy particle beams in university-scale laboratories. With the direct laser acceleration (DLA) method, the leading part of the laser pulse ionizes the target material and forms a positively charged ion plasma channel into which electrons are injected and accelerated. DLA has been realized over a wide range of laser parameters, using low-atomic-number target materials. In this presented work we reveal that at these higher laser intensities, the leading edge of the laser pulse depletes the target material of its ionization electrons prematurely. We demonstrate experimentally and numerically that for efficient DLA to prevail, a target material of sufficiently high atomic number is required to maintain the injection of ionization electrons at the peak intensity of the pulse when the DLA channel is already formed.
UR - http://www.scopus.com/inward/record.url?scp=85192560881&partnerID=8YFLogxK
U2 - 10.1364/NLO.2023.W1B.2
DO - 10.1364/NLO.2023.W1B.2
M3 - ???researchoutput.researchoutputtypes.contributiontoconference.paper???
AN - SCOPUS:85192560881
T2 - 2023 Optica Nonlinear Optics Topical Meeting, NLO 2023
Y2 - 10 July 2023 through 13 July 2023
ER -