Investigation of laser driven ion and electron
!!! Research on relativistic laser plasma dynamics and the related project 2.1 will be completed at MBI in 2016. Last experiments have been performed until July 2016 and rebuilding of the former High Field Laser Laboratory - the experimental platform for 2.1 - started in August 2016 !!!
The website provides an overview about some achievements during the past years.
The project aimed on detailed study of energy transfer
processes in relativistic plasmas which are accompanied by
strong fields. These fields account for laser acceleration
of charged particles which can be pursued for new
technologies in pulsed electron and ion beam generation.
Optimization of ion and electron acceleration comprises
the two topics of the project. Exploration of different
regimes of the laser acceleration process is one
objective. Utilization of the laser radiation pressure is
a main direction in ion and proton acceleration. Electron
acceleration as a second research topic started in
2012. The necessary infrastructure - a special lab with
radiation enclosure and two laser arms at 100 TW pulse
power - has been erected in parallel (cf. 4.2).Generally,
development of acceleration schemes for stable electron
beam parameters is a key issue for new brilliant x-ray
sources and electron accelerators. Definite ion beam
parameter are a prerequisite in "proton imaging" which is
applied as a diagnostic tool for ultra-strong field
phenomena in relativistic plasmas.
Fast Gold - Coulomb driven energy boost
in laser - heavy ion acceleration
Dependence of maximum ion energy (pink
its ionization energy - as the experiment with
laser (1.3J @ 35 fs) irradiated 14 nm thick gold
foils delivered. Good
agreement has been found with the 2D - PIC
simulation - blue squares and with the
prediction of our new theoretical model- blue
line in contrast to the established old model -
black line. Inserted Foto (dispersed ions in a
Thomson mass spectrometer and recorded with an
imaging micro channel plate)
shows characteristic distribution of
hydrogen, carbon, nitrogen, oxygen from
contamination layer and up to 50 different
ionization states of gold ions emerging from the
irradiated thin foil.