A5074163700- Nuclear Physics and Applications
- Nuclear physics research studies
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Astronomical and nuclear sciences
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- Atomic and Molecular Physics
- Nuclear Materials and Properties
- Particle Detector Development and Performance
- Particle accelerators and beam dynamics
- X-ray Spectroscopy and Fluorescence Analysis
- Quantum Chromodynamics and Particle Interactions
- Particle Accelerators and Free-Electron Lasers
- Advanced Chemical Physics Studies
- Medical Imaging Techniques and Applications
- Cold Fusion and Nuclear Reactions
- Advanced Radiotherapy Techniques
- Advanced NMR Techniques and Applications
- Rare-earth and actinide compounds
- Chemical Reactions and Isotopes
- Radiation Dose and Imaging
- Particle physics theoretical and experimental studies
- Electron and X-Ray Spectroscopy Techniques
- Radioactivity and Radon Measurements
Helmholtz-Zentrum Dresden-Rossendorf
2016-2025
University of Pavia
2024
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
2024
Charité - Universitätsmedizin Berlin
2023
TU Dresden
2009-2015
Triangle Universities Nuclear Laboratory
2009-2010
Vattenfall (Sweden)
2010
Daido University
2010
Hokkaido University
2010
Duke University
2009-2010
The dipole response of the $N=50$ nucleus $^{90}\mathrm{Zr}$ was studied in photon-scattering experiments at electron linear accelerator ELBE with bremsstrahlung produced kinetic energies 7.9, 9.0, and 13.2 MeV. We identified 189 levels up to an excitation energy 12.9 Statistical methods were applied estimate intensities inelastic transitions correct ground-state for their branching ratios. In this way we derived photoabsorption cross section neutron-separation energy. This matches well...
The dipole strength of the $N=50$ nucleus ${}^{86}$Kr was studied in photon-scattering experiments using bremsstrahlung produced with electron beams energies 7.9 and 11.2 MeV delivered by linear accelerator ELBE as well quasimonoenergetic linearly polarized $\ensuremath{\gamma}$ rays 10 within range from 4.7 to 9.3 HI$\ensuremath{\gamma}$S facility. A high-pressure gas target used. We identified 39 levels up an excitation energy 10.1 MeV. Simulations $\ensuremath{\gamma}$-ray cascades were...
The dipole response of the magic $N=50$ nucleus $^{88}\mathrm{Sr}$ was studied in photon-scattering experiments at electron linear accelerator ELBE with bremsstrahlung produced kinetic energies 9.0, 13.2, and 16.0 MeV. We identified 160 levels up to an excitation energy 12 By using polarized photons polarizations about 50 \ensuremath{\gamma} transitions were measured that enabled parity assignments corresponding states. In range 6--12 MeV we only one $M1$ transition; all other have $E1$...
Photoabsorption cross sections ${\ensuremath{\sigma}}_{\ensuremath{\gamma}}$ up to the neutron-separation energy ${S}_{n}$ were measured for stable even-mass isotopes $^{92\ensuremath{-}100}\mathrm{Mo}$ in photon-scattering experiments. The data analyzed a novel way by taking into account intensity of unresolved levels at high excitation and level density. Simulations $\ensuremath{\gamma}$-ray cascades performed estimate distribution inelastic transitions low-lying and, hence, deduce...
The electromagnetic dipole strength of the nucleus ${}^{136}$Ba has been investigated. Two measurements were performed with electron energies 7.0 and 11.4 MeV at bremsstrahlung facility ELBE accelerator Helmholtz-Zentrum Dresden-Rossendorf. Photon scattering experiments on same have high-intensity gamma-ray source (HI$\ensuremath{\gamma}$S) Triangle Universities Nuclear Laboratory between 4.7 9.3 MeV. geant4 code used to determine detector response non-nuclear scattered events. Thus it is...
The $\ensuremath{\gamma}$-ray strength function is an important input quantity for the determination of photoreaction rate and neutron capture astrophysics as well nuclear technologies. To test model predictions, photoabsorption cross section $^{139}\mathrm{La}$ up to neutron-separation energy was measured using bremsstrahlung produced at electron accelerator ELBE Forschungszentrum Dresden-Rossendorf with beam $11.5$ MeV kinetic energy. experimental data were analyzed by applying Monte Carlo...
The electromagnetic dipole strength below the neutron-separation energy has been studied for xenon isotopes with mass numbers A = 124, 128, 132, and 134 in nuclear resonance fluorescence experiments using ELBE bremsstrahlung facility at Helmholtz-Zentrum Dresden-Rossendorf HIgS Triangle Universities Nuclear Laboratory Durham. systematic study gained new information about influence of neutron excess as well deformation on region pygmy resonance. results are compared those obtained chain...
The dipole strength of the nuclide 59Co was studied in photon-scattering experiments using bremsstrahlung produced with electron beams energies 8.6 and 12.2 MeV at facility 𝛾ELBE. We identified 130 levels up to an excitation energy 10.5 MeV. quasicontinuum unresolved transitions included analysis spectra intensities branching were estimated on basis simulations statistical 𝛾-ray cascades. photoabsorption cross section neutron-separation determined is compared predictions reaction model as...
Two methods based on bremsstrahlung were applied to the stable even Mo isotopes for experimental determination of photon strength function covering high excitation energy range above 4 MeV with its increasing level density. Photon scattering was used up neutron separation energies ${S}_{n}$ and data maximum isovector giant resonance (GDR) obtained by photoactivation. After a proper correction multistep processes observed quasicontinuous spectra scattered photons show remarkably good match...
Photoexcitation of the $N=50$ nucleus $^{89}\mathrm{Y}$ has been performed at bremsstrahlung facility superconducting electron accelerator ELBE energies ${E}_{e}^{\mathrm{kin}}=9.5$ and 13.2 MeV. About 250 levels up to neutron-separation energy were identified. Statistical methods applied estimate intensities inelastic transitions correct ground-state for their branching ratios. The photoabsorption cross section derived in this way is combined with obtained from ($\ensuremath{\gamma}$, $n$)...
The dipole strength function and the nuclear level density of compound nucleus ${}^{78}$Se were studied in a combined analysis cold neutron capture experiment on ${}^{77}$Se performed at research reactor Budapest photon-scattering electron linear accelerator ELBE with bremsstrahlung produced kinetic energy $11.5\phantom{\rule{4pt}{0ex}}\mathrm{M}\mathrm{e}\mathrm{V}$. In we developed extreme statistical code $\ensuremath{\gamma}$dex for simulation radiative cascade deexcitations occurring...
The neutron time-of-flight facility n_TOF at CERN is a spallation source dedicated to measurements of neutron-induced reaction cross-sections interest in nuclear technologies, astrophysics, and other applications. Since 2014, Experimental ARea 2 (EAR2) operational delivers fluence ∼4⋅107 neutrons per nominal proton pulse, which ∼50 times higher than the one 1 (EAR1) ∼8⋅105 pulse. high flux EAR2 results counting rates detectors that challenged previously existing capture detection systems....
The 14N(p, \gamma)15O reaction is the slowest of carbon-nitrogen-oxygen cycle hydrogen burning in stars. As a consequence, it determines rate cycle. 15N(p, \alpha \gamma)12C frequently used inverse kinematics for depth profiling materials. and reactions have been studied simultaneously, using titanium nitride targets natural isotopic composition proton beam. strengths resonances at Ep = 1058 keV 897 430 determined with improved precision, relative to well-known resonance 278 \gamma)15O. new...
Measuring signatures of strong-field quantum electrodynamics (SF-QED) processes in an intense laser field is experimental challenge: it requires detectors to be highly sensitive single electrons and positrons the presence typically very strong x-ray $\gamma$-photon background levels. In this paper, we describe a particle detector capable diagnosing leptons from SF-QED interactions discuss level simulations for upcoming Experiment-320 at FACET-II (SLAC National Accelerator Laboratory). The...
The ${}^{197}\mathrm{Au}(\ensuremath{\gamma},n)$ reaction is used as an activation standard for photodisintegration studies on astrophysically relevant nuclei. At the bremsstrahlung facility of superconducting electron accelerator ELBE (Electron Linear high Brilliance and low Emittance) Forschungszentrum Dresden-Rossendorf, photoactivation measurements $^{197}\mathrm{Au}$ have been performed with endpoint energies from 8.0 to 15.5 MeV. measured yield compared previous experiments well...
Photoactivation measurements on $^{144}\mathrm{Sm}$ have been performed with bremsstrahlung endpoint energies from 10.0 to 15.5 MeV at the facility of superconducting electron accelerator ELBE Forschungszentrum Dresden-Rossendorf. The measured activation yield for $^{144}\mathrm{Sm}$($\ensuremath{\gamma},n$) reaction is compared calculated using cross sections previous photoneutron experiments. yields all disintegration channels $^{144}\mathrm{Sm}$($\ensuremath{\gamma},n$),...
The photoabsorption cross section of $^{181}\mathrm{Ta}$ up to the neutron-separation energy is deduced using bremsstrahlung produced with an electron beam 9.6 MeV energy. analysis measured $\ensuremath{\gamma}$-ray spectra includes quasicontinuum levels at high Simulations cascades are performed estimate intensities inelastic transitions and branching ratios ground-state transitions. resulting shows enhanced dipole strength in range from 5 8 MeV, which may be related a pygmy resonance....
The low-lying $M1$-strength of the open-shell nucleus $^{50}$Cr has been studied with method nuclear resonance fluorescence up to 9.7 MeV, using bremsstrahlung at superconducting Darmstadt linear electron accelerator S-DALINAC and Compton backscattered photons High Intensity $\gamma$-ray Source (HI$\gamma$S) facility between 6 MeV initial photon energy. Fifteen $1^{+}$ states have observed 3.6 MeV. Following our analysis, lowest state can be considered as an isovector orbital mode some spin...