On Thursday 13rd February at 15:30 CET in the series of webinars co-organized by PROBONO and HB11 Energy, Olga N. Rosmej from GSI Helmholtzzentrum für Schwerionenforschung and Goethe University, in Germany delivers a talk entitled “Ultra-bright DLA-based beams of particles and
radiation using foams converted to NCD plasma”.
LINK: https://us06web.zoom.us/j/84322415531?pwd=xCPIS8nu1C35TYY6OmamKfEVEqDqSb.1
Ultra-bright DLA-based beams of particles and
radiation using foams converted to NCD plasma
O. N Rosmej
1 GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, Germany
2 Goethe University, Frankfurt, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany
ABSTRACT:
Low density foam pre-ionized with a well-controlled nanosecond pulse is an excellent plasma target for effective direct laser acceleration (DLA) of electrons by relativistic laser pulses. Electrons play a crucial role in the acceleration of protons, generation of betatron radiation, MeV bremsstrahlung, neutrons, etc., which can be used for a wide range of applications. In the last 5 years we have demonstrated a highly efficient and robust DLA process leading to generation of high-current well-collimated beams of super-ponderomotive electrons (Rosmej NJP2019, Rosmej PPCF2020) together with production of bright betatron radiation (Shen PRA2021, Rosmej MRE2021, Cikhardt MRE 2024; Gyrdymov Sci. Rep 2024), MeV bremsstrahlung and neutrons with the record-breaking conversion efficiencies (Günther Nat Com2022, Tavana Frontiers of Phys. Nuc. Phys.2023). Our results pay a way for application of low-density foams on kJ PW-class laser facilities around HED and ICF relevant research, but also in the laboratory nuclear astrophysics with lasers and the FLASH effect.
BIO:
Prof. Dr. Olga N. Rosmej
Affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
Current position:
Staff scientist at the GSI Darmstadt since 2000, permanent
Habilitation at the Goethe University Frankfurt 2012
Prof. at the Goethe University Frankfurt, since 2019
Research in high energy density physics with intense laser and ion beams:
X-ray spectroscopy of hot plasmas; X-ray spectroscopy of heavy ion stopping in matter, Physics of the heavy ion interaction with plasmas, Laser-plasma interaction and particle acceleration, Secondary laser based sources of photons and particles, Nanostructured materials and applications.
Since 2017: Relativistic laser interaction with low density foams for generation of ultraintense sources of MeV particles (electrons, protons, neutrons, isotopes) and radiation (MeV bremsstrahlung, KeV betatron radiation).
Experimental experience
Principal Investigator (PI) of more than 30 international and national experimental projects with intense heavy ion and laser beams.
Experiment at the ARC/NIF in 2025 in the frame of NIF Discovery Science, platform development: “Ultra-bright MeV photon sources driven by direct laser accelerated (DLA) electrons on ARC”.
More than 100 invited and plenary talks at the national and international conferences
More than 110 publications in peer-reviewed journals.
