J. Glorius
A5065189451- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Advanced Chemical Physics Studies
- Particle accelerators and beam dynamics
- Advanced NMR Techniques and Applications
- Medical Imaging Techniques and Applications
- Astro and Planetary Science
- Radiation Therapy and Dosimetry
- Laser-induced spectroscopy and plasma
- Nuclear Materials and Properties
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Chromodynamics and Particle Interactions
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Mass Spectrometry Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Ion-surface interactions and analysis
- Enzyme Structure and Function
GSI Helmholtz Centre for Heavy Ion Research
2016-2025
Goethe University Frankfurt
2012-2020
Technical University of Darmstadt
2009-2013
Abstract Quantum electrodynamics (QED), the quantum field theory that describes interaction between light and matter, is commonly regarded as best-tested in modern physics. However, this claim mostly based on extremely precise studies performed domain of relatively low strengths atoms ions 1–6 . In realm very strong electromagnetic fields such heaviest highly charged (with nuclear charge Z ≫ 1), QED calculations enter a qualitatively different, non-perturbative regime. Yet, corresponding...
Neutron-induced reaction cross sections of short-lived nuclei are imperative to understand the origin heavy elements in stellar nucleosynthesis and for societal applications, but their measurement is extremely complicated due radioactivity targets involved. One way overcoming this issue combine surrogate reactions with unique possibilities offered by heavy-ion storage rings. In work, we describe first surrogate-reaction experiment inverse kinematics, which successfully conducted at...
The probabilities for γ-ray and particle emission as a function of the excitation energy decaying nucleus are valuable observables constraining ingredients models that describe deexcitation nuclei near threshold. These essential in nuclear astrophysics applications. In this paper, we have first time simultaneously measured neutron <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>Pb</a:mi><a:mprescripts/><a:none/><a:mn>208</a:mn></a:mmultiscripts></a:math>....
We report the application of new elimination Rutherford elastic scattering technique for measurement proton-induced reaction cross sections utilizing stored ions decelerated to astrophysical energies. This approach results in a background reduction factor about 1 order magnitude, enabling first (p, n) section storage ring. Here, channels ^{124}Xe(p,n) and ^{124}Xe(p,γ) have been studied just above neutron threshold energy. The data provide valuable constraints Hauser-Feshbach theory...
This work presents a direct measurement of the $^{96}$Ru($p, \gamma$)$^{97}$Rh cross section via novel technique using storage ring, which opens opportunities for reaction measurements on unstable nuclei. A proof-of-principle experiment was performed at ring ESR GSI in Darmstadt, where circulating $^{96}$Ru ions interacted repeatedly with hydrogen target. The between 9 and 11 MeV has been determined two independent normalization methods. As key ingredients Hauser-Feshbach calculations,...
We report the first measurement of low-energy proton-capture cross sections $^{124}\mathrm{Xe}$ in a heavy-ion storage ring. ${^{124}\mathrm{Xe}}^{54+}$ ions five different beam energies between 5.5 and 8 AMeV were stored to collide with windowless hydrogen target. The $^{125}\mathrm{Cs}$ reaction products directly detected. interaction are located on high energy tail Gamow window for hot, explosive scenarios such as supernovae x-ray binaries. results serve an important test predicted...
The dipole response of ${}_{34}^{76}$Se in the energy range from 4 to 9 MeV has been analyzed using a $(\stackrel{P\vec}{\ensuremath{\gamma}},{\ensuremath{\gamma}}^{\ensuremath{'}})$ polarized photon scattering technique, performed at High Intensity $\ensuremath{\gamma}$-Ray Source facility Triangle Universities Nuclear Laboratory, complement previous work unpolarized photons. results this offer both an enhanced sensitivity scan and unambiguous determination parities observed $J=1$ states....
The low-lying dipole strength of the open-shell nucleus ${}^{94}$Mo was studied via nuclear resonance fluorescence technique up to 8.7 MeV excitation energy at bremsstrahlung facility Superconducting Darmstadt Electron Linear Accelerator (S-DALINAC), and with Compton backscattered photons High Intensity $\ensuremath{\gamma}$-ray Source (HI$\ensuremath{\gamma}$S) facility. In total, 83 excited states were identified. Exploiting polarized quasi-monoenergetic HI$\ensuremath{\gamma}$S, parity...
We present the first nuclear cross-section measurements of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo stretchy="false">(</a:mo><a:mi mathvariant="normal">p</a:mi><a:mo>,</a:mo><a:mi>γ</a:mi><a:mo stretchy="false">)</a:mo></a:mrow></a:math> and (p,n) reactions on <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"...
Abstract Non-destructive Schottky detectors are indispensable devices widely used in experiments at heavy-ion storage rings. In particular, they can be to accurately determine the masses and lifetimes of short-lived exotic nuclear species. Single-ion sensitivity -- which enables highest has been regularly achieved past utilizing resonant cavity detectors. Recent designs analysis methods aim pushing limits measurement accuracy by increasing dimensionality acquired data, namely position...
Using novel metallic magnetic calorimeter detectors at the CRYRING@ESR, we recorded x-ray spectra of stored and electron cooled heliumlike uranium (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msup><a:mrow><a:mi mathvariant="normal">U</a:mi></a:mrow><a:mrow><a:mn>90</a:mn><a:mo>+</a:mo></a:mrow></a:msup></a:mrow></a:math>) with an unmatched spectral resolution close to 90 eV. This allowed for accurate determination energies all four components <d:math...
Abstract The application of software defined radio in on-line interaction with the beam processes heavy ion storage ring is presented. It discussed how this new technique can enhance time efficiency and open up measurement possibilities. Discussed a specific example to halt accelerator running case rare stored particle identified online.
Abstract Nuclear reaction studies on unstable isotopes can strongly help in improving our understanding of nucleosynthesis stars. Indirect approaches to determining astrophysical rates are increasingly common-place and undergoing continuous refinement. Of particular interest is the use such indirect techniques at storage rings, which, among other allow recycle rare beams. We propose investigate using methods (surrogate, Trojan horse….) reverse kinematics IMP-CAS ring. Long lived radioactive...
The low-energy CRYRING@ESR storage ring, recently commissioned at GSI@FAIR (Germany), is a world-unique facility able to decelerate and store beams produced in-flight energies E≤10 MeV/u. offers the unique opportunity exploit high quality, pure, radioactive of species difficult produce via ISOL method for reaction studies directly astrophysical interest. use thin, windowless in-ring targets combined with re-circulating beam also presents significant advantages in terms background luminosity....
Background: Optical potentials are crucial ingredients for the prediction of nuclear reaction rates needed in simulations astrophysical \gamma-process. Associated uncertainties particularly large reactions involving \alpha-particles. This includes (\gamma,\alpha) which special importance Purpose: The measurement (\alpha,n) allows an optimization currently used \alpha-nucleus potentials. 165Ho(\alpha,n) and 166Er(\alpha,n) probe optical model a mass region where \gamma-process calculations...
In this paper we present a large-scale sensitivity study of reaction rates in the main component $s$ process. The aim is to identify all rates, which have global effect on process abundance distribution and three most important for production each isotope. We performed radiative $^{13}$C-pocket convective thermal pulse, sites AGB stars. identified 22 highest impact $s$-process abundances
The study of stellar burning began just over 100 years ago. Nonetheless, we do not yet have a detailed picture the nucleosynthesis within stars and how impacts structure remnants evolution. Achieving this understanding will require precise direct measurements nuclear reactions involved. This report summarizes status for burning, focusing on developments last couple decades, offering prospectus near-future developments.
Abstract Heavy ion storage rings are powerful tools to store and observe key nuclear properties of rare radioactive isotopes. Recent developments in ring physics enhanced beam intensities have now opened up the possibility carry out low-energy investigations reactions at rings. Pure, intense, exotic beams isotopes that otherwise challenging access can be impinged on pure, ultra-thin targets, allowing study long-standing astrophysical puzzles a variety stellar sites so far resisted...
The nuclear two-photon or double-gamma (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>2</a:mn><a:mi>γ</a:mi></a:math>) decay is a second-order electromagnetic process whereby nucleus in an excited state emits two gamma rays simultaneously. To be able to directly measure the <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mn>2</c:mn><c:mi>γ</c:mi></c:math> rate low-energy regime below electron-positron pair-creation threshold, we combined...