Moritz Fleischer

Events I Public Relations
Communication & Media Relations
Phone: +49 351 260 3498

Eye catcher

HZDR Research Talks

The HZDR Research Talks usually take place on Wednesdays from 1:00 to 2:00 p.m.

The next dates are:

January 20, 2021

by Dr. Michael Bussmann (CASUS)

December 16, 2020

by Dr. Katerina Falk (Institute of Radiation Physics, High Energy Density) "Ultra-fast x-ray probing of astrophysical plasmas"

With novel high power lasers, we are now able to produce plasma conditions equivalent to those that can be found in the universe such as photo-ionized plasmas found in accretion disks around young stars and in binary systems or dense plasmas (or warm dense matter) found inside planetary interiors, celestial impacts, white dwarfs or crusts of old stars.

Warm dense matter (WDM) is an intermediate state of matter at the transition from a solid to an ideal plasma with characteristic medium-to-high temperatures (0.1−100 eV), solid densities and pressures >Mbar. It is also a transition state during capsule implosion in inertial confinement fusion (ICF). Due to complicated quantum effects and high density WDM is very challenging to describe theoretically and diagnose experimentally. In order to probe these astrophysical plasmas in a laboratory, we develop novel ultra-fast x-ray probes based on short-pulse lasers capable of penetrating into the samples and providing real-time information about the thermodynamic properties and structure with novel methods such as absorption spectroscopy, radiography, phase contrast imaging and x-ray Thomson scattering.

Our recent work at the DRACO laser facility at HZDR focuses on the development of novel x-ray sources driven by short-pulse lasers for the probing of WDM. One of the projects includes a laser-driven betatron source to study laser heated samples in ultra-fast time scale. A second project is dedicated to the development of bright K-alpha sources and X-ray spectroscopy to diagnose proton acceleration processes by PW-class lasers. In this talk, the recent experiments at DRACO will be presented and potential applications outlined.

The HDZR Research Talks are a program for HZDR employees of all research fields. Within this framework, scientists give lectures on current projects, methods and procedures and look forward to exchanging ideas with colleagues in order to jointly develop ideas and initiate projects. The Research Talks are also open to external interested parties.

  • Lectures and discussions are held in English.
  • Participation is free of charge.
  • Registration is not required. External visitors need to check in at the HZDR main entrance 30 min in advance.

Dr. Franziska Lederer (Helmholtz Institute Freiberg for Resource Technology, Dept. Biotechnology)
Phone: +49 351 260 2427

Dr. Kristof Zarschler (Institute of Radiopharmaceutical Cancer Research, Dept. Radionuclide Theragnostics)
Phone: +49 351 260 3678

Dr. Peter Zahn (Institute of Ion Beam Physics and Materials Research, Dept. Scaling Phenomena)
Phone: +49 351 260 3121

Dr. Björn Drobot (Institute of Resource Ecology, Dept. Biogeochemistry)
Phone: +49 351 260 2759

Dr. Sandra Hamann (Research Programmes and International Projects)
Phone: +49 351 260 3649

Past lectures: