A5090651959- Nuclear physics research studies
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Rare-earth and actinide compounds
- Astronomical and nuclear sciences
- Particle physics theoretical and experimental studies
- Advanced Chemical Physics Studies
- Muon and positron interactions and applications
- Quantum Chromodynamics and Particle Interactions
Technical University of Darmstadt
2020-2025
The electric dipole strength distribution in <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>Ni</a:mi><a:mprescripts/><a:none/><a:mn>58</a:mn></a:mmultiscripts></a:math> between 6 and 20 MeV has been determined from proton inelastic scattering experiments at very forward angles RCNP, Osaka. experimental data are rather well reproduced by quasiparticle random-phase approximation calculations including vibration coupling, despite a mild dependence on the adopted...
An experimental result for the polarizability of ${}^{40}$Ca is presented. Together with a previous study ${}^{48}$Ca, it serves as test theoretical approaches based on coupled-cluster calculations interactions derived from chiral effective field theory and energy density functional theory, thereby providing constraints equation state neutron-rich matter.
Dipole toroidal modes appear in many fields of physics. In nuclei, such a mode was predicted more than 50 years ago, but clear experimental evidence lacking so far. Using combination high-resolution inelastic scattering experiments with photons, electrons, and protons, we identify for the first time candidates dipole excitations nucleus ^{58}Ni demonstrate that transverse electron form factors represent relevant observable to prove their nature.
The form factor of the electromagnetic excitation $^{12}$C to its 2$^+_1$ state was measured at extremely low momentum transfers in an electron scattering experiment S-DALINAC. A combined analysis with world data results a reduced transition strength $B(E2; 2^+_1\rightarrow 0^+_1) =7.63(19)$ e$^2$fm$^4$ accuracy improved 2.5\%. In-Medium-No Core Shell Model interactions derived from chiral effective field theory are capable reproduce result. quadrupole moment $Q(2^+_1) = 5.97(30)$ efm$^2$...
The electric dipole strength distribution in $^{58}$Ni between 6 and 20 MeV has been determined from proton inelastic scattering experiments at very forward angles RCNP, Osaka. experimental data are rather well reproduced by quasiparticle random-phase approximation calculations including vibration coupling, despite a mild dependence on the adopted Skyrme interaction. They allow an estimate of experimentally inaccessible high-energy contribution above MeV, leading to polarizability...
Electric quadrupole ground-state excitation strengths $B(E2)\ensuremath{\uparrow}$ of the first ${2}^{+}$ states midshell Sn isotopes were measured with nuclear resonance fluorescence method to investigate systematic disagreement between available experimental data from different techniques. Also, model calculations show conflicting trends $B(E2;{0}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})$ values around $^{116}\mathrm{Sn}$. Three experiments on $^{112,116,120}\mathrm{Sn}$ carried out at...
The electric dipole strength distribution in $^{40}$Ca between 5 and 25 MeV has been determined at RCNP, Osaka, from proton inelastic scattering experiments very forward angles. Combined with total photoabsorption data higher excitation energy, this enables an extraction of the polarizability $\alpha_\mathrm{D}$($^{40}$Ca) = 1.92(17) fm$^3$. Together measured $\alpha_{\rm D}$ $^{48}$Ca, it provides a stringent test modern theoretical approaches, including coupled cluster calculations chiral...