Newsletter February 2013
SPARC workshop on microcalorimeter detectors for precision spectroscopy at FAIR was held at HI-Jena
X-ray detectors based on micro-calorimeter technology combine the broad bandwidth of standard solid-state x-ray detectors with a very high resolution comparable to crystal spectrometers. While such detector systems will offer unique experimental possibilities at the future FAIR facility, the complexity of the detector design and operation requires detailed planning and close collaboration between detector developers and experimentalists.
On the 31st of January the first workshop on the application of micro-calorimeters within SPARC, the atomic physics research collaboration at FAIR, was held at HI-Jena. About 40 scientists from the universities of Jena, Frankfurt, Giessen and Paris as well as from EMMI, GSI and HI-Jena took part in the discussions. Besides the application of micro-calorimeters at FAIR, the workshop was also used to define a road map for the commissioning of the novel maXs calorimeter and very first test experiments.
News and Announcements
Prof. Stephan Fritzsche joins HI-Jena and FSU
Since the beginning of this year, Dr. Stephan Fritzsche has joined the Helmholtz Institute and the Department of Physics and Astronomy of the Friedrich Schiller University as Professor for Theoretical Physics and, especially, for the theory of correlated quantum systems in intense fields. In the future, he and his group will strengthen the activities of the institute in the area of relativistic quantum dynamics and strong-field QED and will hence support ongoing research in x-ray science and polarimetry.
During the past years, Stephan Fritzsche has worked at Oulu University (Finland) and the Frankfurt Institute of Advanced Studies (FIAS) where his research was focused mainly on the structure and dynamics of finite quantum systems with applications in atomic, optical and nuclear physics. In this time, in particular, he and his group applied atomic many-body techniques and the density matrix theory for modeling the excitation, ionization and recombination dynamics of neutrals and multiply-charged ions in synchrotron and FEL radiation as well as in the presence of strong Coulomb fields. Several case studies on the quantum dynamics of ions and atoms helped explore, for example, the relativistic light-matter coupling and the role of higher multipoles of the radiation field (than the electric-dipole component) by analyzing the angular and polarization correlations of emitted photons and electrons. Such investigations are of great importance for future research at GSI/FAIR as well as DESY/XFEL.
When combined with highly-correlated quantum amplitudes, the density matrix theory appears to be very suitable also to understand explicitly timedependent phenomena, such as the ionization and radiation of matter in short-pulse and pump-probe scenarios. In the future, therefore, Stephan Fritzsche and his group plans to develop new (many-body) methods for describing the electron dynamics of ions, atoms and plasma in strong fields. Apart from a better qualitative insight into the mechanisms, emphasis will be placed on models with predictive power and that provide quantitative understanding of the underlying processes.
Current and future research interest of Fritzsche's group will therefore include:
- multi-photon ionization dynamics in intense FEL radiation
- auto-ionization of atomic and molecular systems after irradiation
- light-matter interactions and light scattering in strong Coulomb fields
- excitation and decay mechanisms in highly-charged ions
- structure and spectroscopy of heavy and radio-active isotopes as well as
- particle beams carrying quantized orbital angular momentum
Patras Workshop on Axions, WIMPs and WISPs
Waldhausen Manor, Mainz, Germany
More information: http://axion-wimp2013.desy.de/
Joint IMPRES Workshop on “Quantum Dynamics and Photon-Matter-Interaction”
MPIPKS, Dresden, Germany
More information: http://www.mpipks-dresden.mpg.de/~qdpmi13/
Wilhelm und Else Heraeus-Seminar on “Development of High-resolution Pixel Detectors and their Use in Science and Society”
Physics Center, Bad Honnef, Germany
The goals of the seminar are:
- to review and to identify new trends and challenges in the field of pixel detectors
- to nurture scientific collaborations especially with universities and foreign partners
- to promote young scientists
The program consists of invited talks with ample time for discussion but we encourage everyone, in particular young scientists, to contribute a
poster and increase the diversity of the seminar.
More information: http://indico.scc.kit.edu/indico/conferenceDisplay.py?confId=27
European Conference on Atoms, Molecules and PHotons (ECAMP)
The scientific program will cover a variety of topics of contemporary interest to the AMO community, and we are delighted to present a series of plenary lectures by internationally renowned experts.
The organizing committee cordially invites anyone with an interest in atoms, molecules and photons. We hope you will enrich the conference by
participating and sharing your latest knowledge and experiences with us, thereby contributing to a rewarding conference.
More information: http://ecamp11.au.dk/welcome/
International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC)
The International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC) is held biennially to promote the growth and exchange of scientific information on collisions involving photons, electrons, ions, atoms, molecules, clusters, surfaces, and exotic particles.
More information: http://icpeac2013.impcas.ac.cn/index.htm
High-intensity, high-contrast laser pulses generated from the fully diode-pumped Yb:glass laser system POLARIS
M. Hornung, S. Keppler, R. Bödefeld, A. Kessler, H. Liebetrau, J. Körner, M. Hellwing, F. Schorcht, O. Jäckel, A. Sävert, J. Polz, A. K. Arunachalam, J. Hein, and M. C. Kaluza
Opt. Lett. 38, 718 (2013)
Sensitivity calibration of an imaging extreme ultraviolet spectrometer-detector system for determining the efficiency of broadband extreme ultraviolet sources
S. Fuchs, C. Rödel, M. Krebs, S. Hädrich, J. Bierbach, A. E. Paz, S. Kuschel, M. Wünsche, V. Hilbert, U. Zastrau, E. Förster, J. Limpert, and G. G. Paulus
Rev. Sci. Instrum. 84, 023101 (2013)
Evidence for ultra-fast heating in intense-laser irradiated reduced-mass targets
P. Neumayer, B. Aurand, R. Fraga, B. Ecker, R. E. Grisenti, A. Gumberidze, D. C. Hochhaus, A. Kalinin, M. C. Kaluza, T. Kühl, J. Polz, R. Reuschl, Th. Stöhlker, D. Winters, N. Winters, and Z. Yin
Phys. Plasmas 19, 122708 (2012)
Magnetically Amplified Tunneling of the Third Kind as a Probe of Minicharged Particles
B. Döbrich, H. Gies, N. Neitz, and F. Karbstein
Phys. Rev. Lett. 109, 131802 (2012)