A5054982673- Nuclear physics research studies
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Particle physics theoretical and experimental studies
- Astronomical and nuclear sciences
- Nuclear Materials and Properties
- Spectroscopy and Laser Applications
- Neutrino Physics Research
- Mass Spectrometry Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Chemical Physics Studies
- Quantum Chromodynamics and Particle Interactions
- Inorganic Fluorides and Related Compounds
- International Science and Diplomacy
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Radiopharmaceutical Chemistry and Applications
- Optical properties and cooling technologies in crystalline materials
- Particle Detector Development and Performance
- Medical Imaging and Pathology Studies
European Organization for Nuclear Research
2021-2025
Universität Greifswald
2021-2023
Justus-Liebig-Universität Gießen
2019
Mass measurements with the ISOLTRAP mass spectrometer at CERN-ISOLDE improve uncertainties of neutron-deficient tin isotopes towards doubly magic <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>Sn</a:mi><a:mprescripts/><a:none/><a:mn>100</a:mn></a:mmultiscripts></a:math>. The uncertainty <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mmultiscripts><b:mi>Sn</b:mi><b:mprescripts/><b:none/><b:mn>103</b:mn></b:mmultiscripts></b:math> was reduced by a factor...
Abstract Highly accurate and precise electronic structure calculations of heavy radioactive atoms their molecules are important for several research areas, including chemical, nuclear, particle physics. Ab initio quantum chemistry can elucidate structural details in these systems that emerge from the interplay relativistic electron correlation effects, but large number electrons complicates calculations, scarcity experiments prevents insightful theory-experiment comparisons. Here we report...
The excitation energy of the 1/2^{-} isomer in ^{99}In at N=50 is measured to be 671(37) keV and mass uncertainty 9/2^{+} ground state significantly reduced using ISOLTRAP spectrometer ISOLDE/CERN. measurements exploit a major improvement resolution multireflection time-of-flight spectrometer. results reveal an intriguing constancy energies neutron-deficient indium that persists down shell closure, even when all neutrons are removed from valence shell. This trend used test large-scale model,...
The use of radioactive molecules for fundamental physics research is a developing interdisciplinary field limited dominantly by their scarce availability. In this work, molecular ion beams containing actinide nuclei extracted from uranium carbide targets are produced via the Isotope Separation On-Line technique at CERN-ISOLDE facility. Two methods beam production studied: extraction source, and formation ions mass-separated in gas-filled radio-frequency quadrupole trap. Ion currents U$^+$,...
Isomers close to doubly magic Ni502878 provide essential information on the shell evolution and shape coexistence near Z=28 N=50 double closure. We report excitation energy measurement of 1/2+ isomer in Zn493079 through independent high-precision mass measurements with JYFLTRAP Penning trap ISOLTRAP multi-reflection time-of-flight spectrometer. unambiguously place at 942(10) keV, slightly below 5/2+ state 983(3) keV. With use state-of-the-art shell-model diagonalizations, complemented...
Combining laser spectroscopy in a Versatile Arc Discharge and Laser Ion Source (VADLIS) with Penning-trap mass spectrometry at the CERN-ISOLDE facility, this work reports on mean-square charge radii of neutron-rich mercury isotopes across $N=126$ shell closure, electromagnetic moments $^{207}\mathrm{Hg}$, more precise values $^{206\text{--}208}\mathrm{Hg}$. The odd-even staggering (OES) mean square kink are analyzed within framework covariant density functional theory (CDFT), comparisons...
The radioactive nuclide 225Ac is one of the few promising candidates for cancer treatment by targeted- α -therapy, but worldwide production faces significant limitations. In this work, Isotope Separation On-Line method was used to produce actinium irradiating targets made uranium carbide and thorium with 1.4-GeV protons. Actinium fluoride molecules were formed, ionized through electron impact, then extracted mass-separated as a beam molecular ions. composition mass-selected ion verified...
The article describes the commissioning and technical development of Weak Interaction Studies with 32Ar Decay (WISArD) experiment, installed at radioactive ion-beam facility ISOLDE/CERN. experiment aims to extend present limits on scalar tensor currents in weak interaction hence search for physics beyond Standard Model. evaluation these relies measuring proton energy beta-delayed emission, sensitive both beta-neutrino angular correlation coefficient aβν Fierz interference term b. method...
The radiative lifetime of the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi>A</a:mi><a:mspace width="0.16em"/><a:mmultiscripts><a:mi mathvariant="normal">Π</a:mi><a:mrow><a:mn>1</a:mn><a:mo>/</a:mo><a:mn>2</a:mn></a:mrow><a:none/><a:mprescripts/><a:none/><a:mn>2</a:mn></a:mmultiscripts></a:mrow></a:math> <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mrow><d:mo>(</d:mo><d:mi>v</d:mi><d:mo>=</d:mo><d:mn>0</d:mn><d:mo>)</d:mo></d:mrow></d:math> state in radium...
Accelerator-based techniques are one of the leading ways to produce radioactive nuclei. In this work, isotope separation on-line method was employed at CERN-ISOLDE facility neptunium and plutonium from a uranium carbide target material using 1.4-GeV protons. Neptunium were laser-ionized extracted as 30-keV ion beams. A multireflection time-of-flight mass spectrometer used for identification by means measurements well isobaric separation. Isotope shifts investigated 395.6-nm ground state...
Abstract Beta - neutrino correlation measurements are key in the research of physics beyond Standard Model. In pure Fermi beta transitions, beta-neutrino coefficient, a βν , is sensitive to presence scalar currents. The present limits were established by experimental studies various nuclear systems with allowed transitions. A new experiment improve constraints on currents being developed, WISArD collaboration at ISOLDE/CERN, where aim measure energy shift β-delayed protons emitted from...
In this paper we discuss a general approach to use SiPMs in different electrical configurations combination with numerous scintillator materials for applications nuclear instrumentation, such as calorimetry and timing. The "hybrid" configuration used the PANDA detector was found show fastest timing properties several hundred pico second response by combining advantages of large active area while avoiding high operation voltages dark noise. A "parallel" shows largest light collection...
Accelerator-based techniques are one of the leading ways to produce radioactive nuclei. In this work, Isotope Separation On-Line method was employed at CERN-ISOLDE facility neptunium and plutonium from a uranium carbide target material using 1.4-GeV protons. Neptunium were laser-ionized extracted as 30-keV ion beams. A Multi-Reflection Time-of-Flight mass spectrometer used for identification by means time-of-flight measurements well isobaric separation. shifts investigated 395.6-nm ground...
The use of radioactive molecules for fundamental physics research is a developing interdisciplinary field limited dominantly by their scarce availability. In this work, molecular ion beams containing actinide nuclei extracted from uranium carbide targets are produced via the Isotope Separation On-Line technique at CERN-ISOLDE facility. Two methods beam production studied: extraction source, and formation ions mass-separated in gas-filled radio-frequency quadrupole trap. Ion currents U$^+$,...
Isomers close to doubly magic _{28}^{78}Ni_{50} provide essential information on the shell evolution and shape coexistence near Z=28 N=50 double closure. We report excitation energy measurement of 1/2^{+} isomer in _{30}^{79}Zn_{49} through independent high-precision mass measurements with JYFLTRAP Penning trap ISOLTRAP multi-reflection time-of-flight spectrometer. unambiguously place at 942(10) keV, slightly below 5/2^{+} state 983(3) keV. With use state-of-the-art shell-model...