D. A. Nesterenko
A5015036129- Nuclear physics research studies
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Nuclear Physics and Applications
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Advanced Chemical Physics Studies
- Mass Spectrometry Techniques and Applications
- Nuclear reactor physics and engineering
- Quantum Chromodynamics and Particle Interactions
- Thermal and Kinetic Analysis
- Atomic and Subatomic Physics Research
- Energetic Materials and Combustion
- Radioactive Decay and Measurement Techniques
- Chemical Reaction Mechanisms
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Chemical Reactions and Mechanisms
- Inorganic Fluorides and Related Compounds
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Synthesis and Reactions of Organic Compounds
- Astro and Planetary Science
- Chemical Thermodynamics and Molecular Structure
- Synthesis and Biological Evaluation
- Particle accelerators and beam dynamics
University of Jyväskylä
2016-2025
Uppsala University
2023
Petersburg Nuclear Physics Institute
2010-2019
Kurchatov Institute
2019
St Petersburg University
2012-2018
GSI Helmholtz Centre for Heavy Ion Research
2017
Institute of Problems of Chemical Physics
1994-2016
Russian Academy of Sciences
1969-2015
Max Planck Institute for Nuclear Physics
2014
Samsung (South Korea)
2005
A novel approach based on the projection of Penning-trap ion motion onto a position-sensitive detector opens door to very accurate mass measurements ppb level even for short-lived nuclides with half-lives well below second. In addition accuracy boost, new method provides superior resolving power by which low-lying isomeric states excitation energy 10-keV can be easily separated from ground state. measurement difference ^{130}Xe and ^{129}Xe has demonstrated great potential approach.
Quantum-mechanical shell effects are expected to strongly enhance nuclear binding on an "island of stability" superheavy elements. The predicted center at proton number $Z=114,120$, or $126$ and neutron $N=184$ has been substantiated by the recent synthesis new elements up $Z=118$. However location extension island stability remain vague. High-precision mass spectrometry allows direct measurement energies thus determination strength effects. Here, we present such measurements for nobelium...
Abstract The magnetic moment μ of a bound electron, generally expressed by the g -factor =− B s ħ −1 with Bohr magneton and electron’s spin, can be calculated bound-state quantum electrodynamics (BS-QED) to very high precision. recent ultra-precise experiment on hydrogen-like silicon determined this value eleven significant digits, thus allowed rigorously probe validity BS-QED. Yet, investigation one most interesting contribution -factor, relativistic interaction between electron nucleus, is...
Precision mass measurements of neutron-rich rhodium isotopes have been performed at the JYFLTRAP Penning trap spectrometer Ion Guide Isotope Separator On-Line (IGISOL) facility. We report results on ground- and isomeric-state masses in $^{110,112,114,116,118}\mathrm{Rh}$ very first measurement $^{120}\mathrm{Rh}$. The isomeric states were separated measured for time using phase-imaging ion-cyclotron-resonance (PI-ICR) technique. For $^{112}\mathrm{Rh}$, we also new half-lives both ground...
We report on the masses and hyperfine structure of ground isomeric states in 114,116,118,120Ag isotopes, measured with phase-imaging ion-cyclotron-resonance technique (PI-ICR) JYFLTRAP mass spectrometer collinear laser spectroscopy beamline at Ion Guide Isotope Separator On-Line facility, Jyväskylä, Finland. excitation energies, electromagnetic moments, charge radii, firmly established nuclear spins long-lived states. A new isomer was discovered 118Ag half-lives were reevaluated....
The rare-earth peak in the $r$-process abundance pattern depends sensitively on both astrophysical conditions and subtle changes nuclear structure region. This work takes an important step elucidating reducing uncertainties calculations via precise atomic mass measurements at JYFLTRAP double Penning trap. $^{158}$Nd, $^{160}$Pm, $^{162}$Sm, $^{164-166}$Gd have been measured for first time precisions $^{156}$Nd, $^{158}$Pm, $^{162,163}$Eu, $^{163}$Gd, $^{164}$Tb improved considerably. Nuclear...
Abstract Phase-imaging ion-cyclotron-resonance technique has been implemented at the Penning-trap mass spectrometer JYFLTRAP and is routinely employed for measurements of stable short-lived nuclides produced IGISOL facility. Systematic uncertainties that impose limitations on accuracy are discussed. It was found out phase evolution radial motion ions in a Penning trap during application radio-frequency fields leads to systematic cyclotron frequency shift when more than one ion species...
The multinucleon transfer (MNT) reaction approach was successfully employed for the first time to measure isomeric ratios (IRs) of 211Po isomer (25/2+) and its ground state (9/2+) at IGISOL facility using a 945 MeV 136Xe beam impinged on 209Bi natPb targets. dominant production isomers compared corresponding states consistently revealed in α-decay spectra. Deduced IR populated through 136Xe+natPb found have an enhancement ≈1.8-times than that observed 136Xe+209Bi. State-of-the-art...
Precision mass measurements of 104Y, 106Zr, 104,104m,109Nb, and 111,112Mo have been performed with the JYFLTRAP double Penning trap spectrometer at Ion Guide Isotope Separator On-Line facility. The order long-lived states in 104Nb was unambiguously established. trend two-neutron separation energies around N=66 neutron midshell appeared to be steeper respect Atomic Mass Evaluation 2020 extrapolations for 39Y 40Zr isotopic chains less steep 41Nb chain, indicating a possible gap opening Z=40....
High-precision mass measurements of exotic ^{95-97}Ag isotopes close to the N=Z line have been conducted with JYFLTRAP double Penning trap spectrometer, silver ions produced using recently commissioned inductively heated hot cavity catcher laser ion source at Ion Guide Isotope Separator On-Line facility. The atomic ^{95}Ag was directly determined for first time. In addition, masses β-decaying 2^{+} and 8^{+} states in ^{96}Ag identified measured time, precision ^{97}Ag has improved. newly...
The $\beta$-delayed neutron emission in the $^{85, 86}$As $\beta$-decays has been measured at Ion Guide Isotope Separator On Line facility of Accelerator Laboratory University Jyv\"askyl\"a. complete have studied with a complex setup that consists plastic scintillator for $\beta$-particles, MONSTER -- MOdular Neutron time-of-flight SpectromeTER neutrons, and high-purity germanium four LaBr$_3$ crystals $\gamma$-rays. energy distributions determined by unfolding spectra an innovative...
The $Q$ values of the neutrinoless double-electron capture transitions in ${}^{96}\text{Ru}$, ${}^{162}\text{Er}$, and ${}^{168}\text{Yb}$ have been determined by Penning-trap mass-ratio measurements. Based on our new high-precision results for values, neither these shows a resonant enhancement rate. At present, this excludes nuclides from list suitable candidates search capture.
Abstract Understanding the evolution of nuclear charge radius is one long-standing challenges for theory. Recently, density functional theory calculations utilizing Fayans functionals have successfully reproduced radii a variety exotic isotopes. However, difficulties in isotope production hindered testing these models immediate region chart below heaviest self-conjugate doubly-magic nucleus 100 Sn, where near-equal number protons ( Z ) and neutrons N lead to enhanced neutron-proton pairing....
The impact of nuclear deformation can been seen in the systematics charge radii, with radii generally expanding increasing deformation. In this Letter, we present a detailed analysis precise relationship between quadrupole and size. Our approach combines first measurements changes mean-square well-deformed palladium isotopes A=98 A=118 density functional calculations using Fayans functionals, specifically Fy(std) Fy(Δr,HFB), UNEDF2 functional. are extracted from collinear laser spectroscopy...
The JYFLTRAP double Penning trap at the Ion Guide Isotope Separator On-Line (IGISOL) facility has been used to measure atomic masses of 13 neutron-rich rare-earth isotopes. Eight nuclides, $^{161}$Pm, $^{163}$Sm, $^{164,165}$Eu, $^{167}$Gd, and $^{165,167,168}$Tb, were measured for first time. systematics mass surface studied via one- two-neutron separation energies as well neutron pairing-gap shell-gap energies. proton-neutron pairing strength also investigated. impact new values on...
The Q values of double-electron capture in ${}^{124}$Xe, ${}^{130}$Ba, and ${}^{136}$Ce double-beta decay ${}^{124}$Sn ${}^{130}$Te have been determined with the Penning-trap mass spectrometer SHIPTRAP a few hundred eV uncertainty. These nuclides are members three isobaric triplets common daughter nuclides. main goal this work was to investigate existence resonant enhancement neutrinoless double-electron-capture rates ${}^{124}$Xe ${}^{130}$Ba order assess their suitability for search...
For the first time a direct determination of atomic mass difference 187Re and 187Os has been performed with Penning-trap spectrometer SHIPTRAP applying novel phase-imaging ion-cyclotron-resonance technique. The obtained value 2492(30stat)(15sys) eV is in excellent agreement Q values determined indirectly microcalorimetry thus resolves long-standing discrepancy older proportional counter measurements. This essential for neutrino from beta-decay as planned future microcalorimetric In addition,...
The ground state to electron-capture Q value of ^{159}Dy (3/2^{-}) has been measured directly using the double Penning trap mass spectrometer JYFLTRAP. A 364.73(19) keV was obtained from a measurement cyclotron frequency ratio decay parent and daughter ^{159}Tb ions novel phase-imaging ion-cyclotron resonance technique. values for allowed Gamow-Teller transition 5/2^{-} third-forbidden unique 11/2^{+} with excitation energies 363.5449(14) 362.050(40) in were determined be 1.18(19) 2.68(19)...