The nature of isotopic anomalies in charge radii and atomic isomer shifts
at N=126 region.
I.N. Borzov, 1, 2, S.S. Pankratov, 1,3
1) National Research Centre”Kurchatov Institute”, Moscow, Russia
2) Bogolubov Laboratory of Theoretical Physics, JINR, Dubna, Russia
3) Moscow Institute of Physics and Technology, Dolgoprydny, Russia
The nuclear charge ms-radii and atomic isomer shift for the...
Inelastic nuclear collisions accompanied by gamma emission from excited nuclei serve as a valuable source of information regarding nuclear reaction mechanisms and the characteristics (energy, spin, parity) of nuclear levels. Notably, however, gamma radiation resulting from such collisions - occurring not only on the Sun but also on other stars - can be detected on Earth (see, e.g., [1]). The...
Creation of transuranic nuclides in experimental pulsed neutron fluxes of high intensity (up to 10E+30 – 10E+31 n/cm2) is investigated in the kinetic model of the astrophysical r-process. The dynamics of the rapid nucleosynthesis (in the interval ~10E-6 s) is introduced when the process temperature decreases and is taken into account by correction of the cross sections at radiation capture of...
Considered are different one-dimensional three-body systems in the universal
low-energy limit of zero-range two-body interactions.
Included are the two-component system with usual contact interactions and
three-component system with impenetrable particles.
Main attention is paid to the possibility to find analytical results and main
patterns of the dependencies of bound-state energies and...
In our previous publications [1-5] we presented experimental evidences of rare ternary decay mode unknown in the past in which some fraction of fission fragments (FFs) born during binary fission of low excited heavy nuclei undergo a break-up, while they pass a solid-state foil. Experimental evidences obtained so far allowed us to suppose that such FFs are formed in the shape-isomer states....
Joint Institute for Nuclear Research, Dubna, Russia
The use of nuclear emulsions (NEs) in beams of relativistic nuclei expands the study of nuclear clustering and, above all, resonance states near α-particle separation thresholds [nsr-2026]. The current focus is on searching for extremely low-energy α-particle states, described as Bose-Einstein condensates. Following the 2α-state of 8Be(0+)...
Temporal variations of nucleus decay parameters studied extensively in last years, their observation can be signal of unknown physical effects of cosmic origin, in particular, induced by solar influence. Several experiments reported annual and daily decay rate oscillations in α- and β-decays of some nuclides at the level of .01 % [1]. Also, correlations of Mn-54 β-decay rate with ...
New differential cross sections for the single proton transfer reaction $^{13}$C(d,p)$^{14}$C at a deuteron energy of 18 MeV are presented for the ground state 0+ and three excited states: 6.094 MeV (1$^−$); 6.728 MeV (3$^-$); 7.341 MeV (2$^−$) of the product nucleus. The experimental measurements were carried out at the U 150M isochronous cyclotron of the Institute of Nuclear Physics in...
In this work, the population mechanisms of the ^{6}Be nuclear states in the ^{9}Be(^{7}Be, ^{6}Be)X neutron removal reaction at a beam energy of 67 MeV/nucleon are investigated using theoretical models of increasing complexity. The analyzed experimental data were obtained at the National Superconducting Cyclotron Laboratory (NSCL, MSU, USA) in 2011 and stand out as a record in terms of...
The $^{11}$C nucleus is a proton-rich nucleus with intriguing exotic features. Unlike the neutron-rich $^{11}$Be nucleus, isobar analog with a confirmed neutron halo, $^{11}$C does not form a pronounced proton halo due to the Coulomb barrier.
The results of an experimental study of the structure of $^{11}$C using the transfer reaction $^{10}$B($^{7}$Li,$^6$He)$^{11}$C at a beam energy of 58...
The search for the trineutron $^{3}$n was carried out in the reactions of stopped pion absorption $^{9}Be(\pi^{-},d^{4}He)^{3}n$ and $^{9}Be(\pi^{-},t^{3}He)^{3}n$. Correlation measurements of the missing mass spectra were performed using the multilayer semiconductor spectrometer (M. G. Gornov et al., Nucl. Instrum. Methods Phys. Res. A, 446, 461 (2000)). No indications of the existence of...
Modern experiments with heavy highly charged ions provide unique opportunities to probe quantum electrodynamics in the strong-field regime, determine fundamental constants and nuclear properties, and search for physics beyond the Standard Model. The combination of high nuclear charge, simple few-electron structure, and advanced experimental techniques enables precision tests of QED in regimes...
