Newsletter August 2019
Dear colleagues and friends of the HI Jena,
welcome to the August issue of our HI Jena newsletter.
Below you find the latest news from our institute.
We hope you had nice summer holidays as well as a nice and stimulating conference season.
Kind Regards,
Helmholtz Institute Jena
The status of HILITE
Over the last year and in recent days the HILITE (High-Intensity Laser Ion Trap Experiment) Penning trap made great progress and is close to the first milestone - the provision of a well-defined ion cloud for laser experiments.
The demand for ion clouds of controllable density and shape arises from former measurements with XUV laser pulses on gas targets. Here inner shell electrons were addressed and ionised. Due to multi-electron effects in gas jet targets, the measured cross section of the interaction cannot be compared well with theoretical predictions. The possibility to even access K-shell electrons by photon fields was opened up by the enormous progress in laser development over the last years, in both the photon-energy (FLASH, European XFEL) and the peak intensity (POLARIS, JETI) regime. To even measure absolute cross sections of the non-linear laser-ion interaction, the ions must be localised in the trap centre. Hence, they have to be cooled to the sub milli-electronvolt regime. Therefore, we will apply Penning trap cooling techniques, such as resistive cooling and active feedback cooling, which will be the next step of the ion trap commissioning.
In our ongoing commissioning phase, the setup is capable to produce, select, decelerate and store carbon ions up to a charge state of five. Storage times up to 20 min for low charge states and still several minutes for hydrogen-like carbon have been achieved. This can be verified by the detection of the corresponding ion motion frequency in a non-destructive way as shown in figure 2.
In autumn we will prepare the setup for the transport to Hamburg. A beam time was granted in February 2020 at the FLASH X-ray laser facility at DESY to study multi-photon absorption and transition-isolated excitations with subsequent ionisation in simple ionic systems.
Upcoming events
HGS-HIRe SUMMER STUDENT PROGRAM at GSI / FAIR
GSI Helmholtz Center, Darmstadt, Germany
The Summer Program is offered to students on the advanced undergraduate level (Bachelor, Master or Diploma) in physics and related natural science and engineering disciplines from Europe and GSI/FAIR partner countries. The majority of the offered projects will concern investigations and preparations towards our future project FAIR and its scientific experiments.
It would be nice, if you can bring this option to the attention of qualified students in lectures and seminars, etc. or privately or indirectly by informing your colleagues and collaboration members.
Further information for applicants can be found on this link: https://hgs-hire.de/summer-program
Poster: https://theory.gsi.de/stud-pro/HGS-HIRe/Poster2019.pdf
Applications and recommendations must reach us before FEBRUARY 15.
Seventh Joint Lecture Week of RS-APS and HGS-HIRe
Kloster Hardehausen, 34414 Warburg, Germany
This lecture week will be organized by RS-APS in cooperation with HGS-HIRe.
Topic: Imaging Techniques from the Optical to the X-Ray Regime
Recently finished theses
Electron Correlation in Relativistic Multiconfiguration Calculations of Isotope Shift Parameters, Hyperfine Coupling Constants and Atomic Processes
R. Beerwerth
(2019)
https://www.db-thueringen.de/receive/dbt_mods_00039050
Entwicklung, Aufbau und Charakterisierung eines optischen, hochgenauen Target-Positioniersystems
P. Luckner
(2019)
Relativistic interaction of ultra-short laser pulses with nanostructured solids
Z. Samsonova
(2019)
https://www.db-thueringen.de/receive/dbt_mods_00038370
A Scintillation Particle Detector for Recombination Experiments at CRYRING@ESR
E. Menz
(2019)
Time-of-flight Measurements at HILITE
B. Arndt
(2018)
Recent publications
Boosting Quantum Vacuum Signatures by Coherent Harmonic Focusing
F. Karbstein, A. Blinne, H. Gies, and M. Zepf
Phys. Rev. Lett. 123, 091802 (2019)
doi: 10.1103/PhysRevLett.123.091802
Roadmap on photonic, electronic and atomic collision physics: III. Heavy particles: with zero to relativistic speeds
F. Aumayr, K. Ueda, E. Sokell, S. Schippers, H. Sadeghpour, F. Merkt, T. F. Gallagher, F. B. Dunning, P. Scheier, O. Echt, T. Kirchner, S. Fritzsche, A. Surzhykov, X. Ma, R. Rivarola, O. Fojon, L. Tribedi, E. Lamour, J. R. C. Lopez-Urrutia, Y. A. Litvinov, V. Shabaev, H. Cederquist, H. Zettergren, M. Schleberger, R. A. Wilhelm, T. Azuma, P. Boduch, H. T. Schmidt, and T. Stöhlker
J. Phys. B 52, 171003 (2019)
doi: 10.1088/1361-6455/ab26ea
X-ray photon scattering at a focused high-intensity laser pulse
F. Karbstein, and E. A. Mosman
Phys. Rev. D 100, 033002 (2019)
doi: 10.1103/PhysRevD.100.033002
Modeling of the 3D spatio-temporal thermal profile of joule-class Yb³⁺-based laser amplifiers
I. Tamer, S. Keppler, J. Körner, M. Hornung, M. Hellwing, F. Schorcht, J. Hein, and M. Kaluza
HPLaser 7, E42 (2019)
doi: 10.1017/hpl.2019.32
Gamma Factory at CERN - Novel Research Tools Made of Light
W. Placzek, A. Abramov, S. Alden, R. Alemany Fernandez, P. Antsiferov, A. Apyan, H. Bartosik, E. Bessonov, N. Biancacci, J. Bieron, A. Bogacz, A. Bosco, R. Bruce, D. Budker, K. Cassou, F. Castelli, I. Chaikovska, C. Curatolo, P. Czodrowski, A. Derevianko, K. Dupraz, Y. Dutheil, K. Dzierzcega, V. Fedosseev, N. Fuster Martinez, S. Gibson, B. Goddard, A. Gorzawski, S. Hirlander, J. Jowett, R. Kersevan, M. Kowalska, M. Krasny, F. Kroeger, M. Lamont, T. Lefevre, D. Manglunki, B. Marsh, A. Martens, J. Molson, D. Nutarelli, L. Nevay, A. Petrenko, V. Petrillo, S. Radaelli, S. Pustelny, S. Rochester, M. Sapinski, M. Schaumann, L. Serafini, V. Shevelko, T. Stoehlker, A. Surzhikov, I. Tolstikhina, F. Velotti, G. Weber, Y. Wu, C. Yin-Vallgren, M. Zanetti, F. Zimmermann, M. Zolotorev, and F. Zomer
Acta Phys. Polon. 50, 1191 (2019)
doi: 10.5506/APhysPolB.50.1191
Ground-state hyperfine splitting of B-like ions in the high-Z region
D. A. Glazov, A. V. Volotka, O. V. Andreev, V. P. Kosheleva, S. Fritzsche, V. M. Shabaev, G. Plunien, and Th. Stöhlker
Phys. Rev. A 99, 062503 (2019)
doi: 10.1103/PhysRevA.99.062503
All-Loop Result for the Strong Magnetic Field Limit of the Heisenberg-Euler Effective Lagrangian
F. Karbstein
Phys. Rev. Lett. 122, 211602 (2019)
doi: 10.1103/PhysRevLett.122.211602
Radiative electron capture as a tunable source of highly linearly polarized x rays
M. Vockert, G. Weber, H. Bräuning, A. Surzhykov, C. Brandau, S. Fritzsche, S. Geyer, S. Hagmann, S. Hess, C. Kozhuharov, R. Märtin, N. Petridis, R. Hess, S. Trotsenko, Yu. A. Litvinov, J. Glorius, A. Gumberidze, M. Steck, S. Litvinov, T. Gassner, P.-M. Hillenbrand, M. Lestinsky, F. Nolden, M. S. Sanjari, U. Popp, C. Trageser, D. F. A. Winters, U. Spillmann, T. Krings, and Th. Stöhlker
Phys. Rev. A 99, 052702 (2019)
doi: 10.1103/PhysRevA.99.052702
Spin states in multiphoton pair production for circularly polarized light
C. Kohlfürst
Phys. Rev. D 99, 096017 (2019)
doi: 10.1103/PhysRevD.99.096017
Approaching the Gamow Window with Stored Ions: Direct Measurement of ¹²⁴Xe(p,γ) in the ESR Storage Ring
J. Glorius, C. Langer, Z. Slavkovská, L. Bott, C. Brandau, B. Brückner, K. Blaum, X. Chen, S. Dababneh, T. Davinson, P. Erbacher, S. Fiebiger, T. Gaßner, K. Göbel, M. Groothuis, A. Gumberidze, G. Gyürky, M. Heil, R. Hess, R. Hensch, P. Hillmann, P.-M. Hillenbrand, O. Hinrichs, B. Jurado, T. Kausch, A. Khodaparast, T. Kisselbach, N. Klapper, C. Kozhuharov, D. Kurtulgil, G. Lane, C. Lederer-Woods, M. Lestinsky, S. Litvinov, Yu. A. Litvinov, B. Löher, F. Nolden, N. Petridis, U. Popp, T. Rauscher, M. Reed, R. Reifarth, M. S. Sanjari, D. Savran, H. Simon, U. Spillmann, M. Steck, T. Stöhlker, J. Stumm, A. Surzhykov, T. Szücs, T. T. Nguyen, A. Taremi Zadeh, B. Thomas, S. Yu. Torilov, H. Törnqvist, M. Träger, C. Trageser, S. Trotsenko, L. Varga, M. Volknandt, H. Weick, M. Weigand, C. Wolf, P. J. Woods, and Y. M. Xing
Phys. Rev. Lett. 122, 092701 (2019)
doi: 10.1103/PhysRevLett.122.092701
Efficient retrieval of phase information from real-valued electromagnetic field data
A. Blinne, S. Kuschel, S. Tietze, and M. Zepf
J. Comput. Phys. X 1, 100019 (2019)
https://doi.org/10.1016/j.jcpx.2019.100019