A5028179089- Nuclear physics research studies
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Superconducting and THz Device Technology
- Quantum Chromodynamics and Particle Interactions
- Photonic and Optical Devices
- Physics of Superconductivity and Magnetism
- Nuclear reactor physics and engineering
- Allergic Rhinitis and Sensitization
- Radioactive element chemistry and processing
- Cold Fusion and Nuclear Reactions
- Radioactive Decay and Measurement Techniques
- Terahertz technology and applications
- Nuclear Materials and Properties
- Particle accelerators and beam dynamics
- Advanced Chemical Physics Studies
- Advanced Optical Sensing Technologies
- Spectroscopy and Laser Applications
- Asthma and respiratory diseases
- Radioactive contamination and transfer
- Radiopharmaceutical Chemistry and Applications
- Astro and Planetary Science
- Chemical Reactions and Isotopes
- Rare-earth and actinide compounds
Altai State Medical University
2017-2022
Moscow State Pedagogical University
2012-2021
Ministry of Health of the Russian Federation
2017
Moscow Institute of Physics and Technology
2013-2017
Institute of Physics and Technology
2017
Institute for Physics of Microstructures
2016
Delft University of Technology
2016
National Research University Higher School of Economics
2016
Joint Institute for Nuclear Research
2003-2013
Harvard University
2011
The decay properties of ${}^{290}116$ and ${}^{291}116$, the dependence their production cross sections on excitation energies compound nucleus, ${}^{293}116$, have been measured in $^{245}\mathrm{Cm}$ ($^{48}\mathrm{Ca}$, $\mathit{xn}$)${}^{293\ensuremath{-}x}116$ reaction. These isotopes element 116 are daughters 118 isotopes, which produced via $^{249}\mathrm{Cf}+^{48}\mathrm{Ca}$ We performed experiment at two projectile energies, corresponding to ${}^{297}118$ nucleus...
The discovery of a new chemical element with atomic number Z=117 is reported. isotopes (293)117 and (294)117 were produced in fusion reactions between (48)Ca (249)Bk. Decay chains involving 11 nuclei identified by means the Dubna gas-filled recoil separator. measured decay properties show strong rise stability for heavier Z > or = 111, validating concept long sought island enhanced superheavy nuclei.
We have studied the dependence of production cross sections isotopes $^{282,283}112$ and $^{286,287}114$ on excitation energy compound nuclei $^{286}112$ $^{290}114$. The maximum section values $xn$-evaporation channels for reaction $^{238}\mathrm{U}(^{48}\mathrm{Ca},xn)^{286\ensuremath{-}x}112$ were measured to be ${\ensuremath{\sigma}}_{3n}={2.5}_{\ensuremath{-}1.1}^{+1.8}\phantom{\rule{0.3em}{0ex}}\mathrm{pb}$...
The results of experiments designed to synthesize element 115 isotopes in the $^{243}\mathrm{Am}+^{48}\mathrm{Ca}$ reaction are presented. With a beam dose $4.3\ifmmode\times\else\texttimes\fi{}{10}^{18}$ $248\text{\ensuremath{-}}\text{MeV}$ $^{48}\mathrm{Ca}$ projectiles, we observed three similar decay chains consisting five consecutive $\ensuremath{\alpha}$ decays, all detected time intervals about $20\phantom{\rule{0.3em}{0ex}}\mathrm{s}$ and terminated at later by spontaneous fission...
With use of the travelling-wave geometry approach, integrated superconductor-nanophotonic devices based on silicon nitride nanophotonic waveguide with a superconducting NbN-nanowire suited top were fabricated. was operated as single-photon counting detector up to 92 % on-chip detection efficiency in coherent mode, serving highly sensitive IR heterodyne mixer spectral resolution (f/df) greater than 106 C-band at 1550 nm wavelength.
In bombardment of ${}^{244}\mathrm{Pu}$ with ${}^{48}\mathrm{Ca}$, we observed a decay sequence consisting an implanted heavy atom, three subsequent $\ensuremath{\alpha}$ decays, and spontaneous fission (SF), all correlated in time position. The measured energies corresponding intervals were ${E}_{\ensuremath{\alpha}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}9.71$ MeV ( $\ensuremath{\Delta}t\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}30.4$ s), 8.67...
We present the observation of first decay event new nuclide ${}^{292}116$ in running experiment on synthesis $Z=116$ nuclei reaction ${}^{248}\mathrm{Cm}{+}^{48}\mathrm{Ca}.$ The is progress at FLNR, JINR, Dubna.
We have studied the excitation functions of reactions $^{244}\mathrm{Pu}$($^{48}\mathrm{Ca}$,$xn$). Maximum cross sections for evaporation 3--5 neutrons in complete-fusion reaction $^{244}\mathrm{Pu+}^{48}\mathrm{Ca}$ were measured to be ${\ensuremath{\sigma}}_{3n}=2\phantom{\rule{0.3em}{0ex}}\text{pb}$, ${\ensuremath{\sigma}}_{4n}=5\phantom{\rule{0.3em}{0ex}}\text{pb}$, and ${\ensuremath{\sigma}}_{5n}=1\phantom{\rule{0.3em}{0ex}}\text{pb}$. The decay properties $3n$-evaporation product...
In the bombardment of a ${}^{244}\mathrm{Pu}$ target with ${}^{48}\mathrm{Ca}$ ions, we observed two identical decay sequences genetically linked events, each consisting an implanted heavy atom, subsequent \ensuremath{\alpha} decays, and terminated by spontaneous fission. The measured energies corresponding half-lives sequential chain members were ${E}_{\ensuremath{\alpha}}=9.84\ifmmode\pm\else\textpm\fi{}0.05 \mathrm{MeV}$ ${(T}_{1/2}{=1.9}_{\ensuremath{-}0.8}^{+3.3} \mathrm{s})$...
An experiment aimed at the synthesis of isotopes element 120 has been performed using $^{244}\mathrm{Pu}(^{58}\mathrm{Fe},\mathit{xn}){}^{302\ensuremath{-}x}120$ reaction. No decay chains consistent with fusion-evaporation reaction products were observed during an irradiation a beam dose $7.1\ifmmode\times\else\texttimes\fi{}{10}^{18} 330\text{\ensuremath{-}}\mathrm{MeV} {}^{58}\mathrm{Fe}$ projectiles. The sensitivity corresponds to cross section 0.4 pb for detection one decay.
The results of two experiments designed to synthesize element 115 isotopes in the $^{243}\mathrm{Am}+^{48}\mathrm{Ca}$ reaction are presented. Two new elements with atomic numbers 113 and were observed for first time. With 248-MeV $^{48}\mathrm{Ca}$ projectiles, we three similar decay chains consisting five consecutive \ensuremath{\alpha} decays, all detected a total time interval 30 s. Each chain was terminated by spontaneous fission (SF) high-energy release lifetime about day. 253-MeV...
Received 4 February 2004DOI:https://doi.org/10.1103/PhysRevC.69.029902©2004 American Physical Society
In bombardments of $^{248}\mathrm{Cm}$ with $^{22}\mathrm{Ne}$ we discovered two new isotopes, $^{265}106$ and $^{266}106$, by establishing genetic links between their $\ensuremath{\alpha}$ decays spontaneous fussion (SF) or the daughter nuclides. We measured ${E}_{\ensuremath{\alpha}}=8.63\ifmmode\pm\else\textpm\fi{}0.05$ MeV for $^{266}106$ a half-life 1.2 s its $^{262}104$. For ${E}_{\ensuremath{\alpha}}=8.71 \mathrm{to} 8.91$ MeV. From these energies estimated half-lives 10-30 2-30...
The decay properties of the new isotope ${}^{282}113$ and its daughter nuclei have been measured in $^{237}\mathrm{Np}$($^{48}\mathrm{Ca}$, $3n$)${}^{282}113$ reaction. During an irradiation with a beam dose $1.1\ifmmode\times\else\texttimes\fi{}{10}^{19}244$-MeV $^{48}\mathrm{Ca}$ projectiles, two chains originating from odd-odd...
The heaviest isotopes of elements Z=117 to Z=105, 294117, 293117, 290115, 289115, 286113, 285113, Rg282, Rg281, Mt278, Bh274, and Db270, were identified by means the Dubna gas-filled recoil separator among products Bk249 + Ca48 reaction. details observed six decay chains, indicating production 293117 are presented discussed. energies resulting half-lives these new nuclei show a strong rise stability with increasing neutron number, validating concept island enhanced for superheavy [Oganessian...
The discovery of hot-electron phenomena in a thin superconducting film the last century was followed by numerous experimental studies its appearance different materials aiming for better understanding and consequent implementation terahertz detection systems practical applications. In contrast to competitors such as superconductor-insulator-superconductor tunnel junctions Schottky diodes, hot electron bolometer (HEB) did not demonstrate any frequency limitation mechanism. latter, conjunction...
In bombardments of $^{244}\mathrm{Pu}$ with $^{34}\mathrm{S}$ we discovered the \ensuremath{\alpha}-decaying nuclide $^{273}110$. We conducted an extensive off-line search raw data for event sequences which fit expected pattern implantation in a position-sensitive detector and subsequent decay $^{273}110$ its descendants. observed one three-member sequence genetically linked \ensuremath{\alpha} decays, resulting ${\mathit{E}}_{\mathrm{\ensuremath{\alpha}}}$=11.35 MeV, half-life...
Production and decay of the isotopes Hs were studied in ${}^{226}$Ra+${}^{48}$Ca reaction at beam energies ${E}_{\mathrm{lab}}=229$, 234, 241 MeV. At ${E}_{\mathrm{lab}}=234$ MeV energy, maximum 4$n$-evaporation channel reaction, six identical $\ensuremath{\alpha}$-SF chains nucleus ${}^{270}$Hs detected corresponding to a cross section ${\ensuremath{\sigma}}_{4n}={16}_{\ensuremath{-}7}^{+13}$ pb. other ${}^{48}$Ca energies, no observed. Nuclei undergo $\ensuremath{\alpha}$ with...
In preparation for recent experiments on the synthesis of superheavy nuclei with $Z=114$ in reaction ${}^{244}\mathrm{Pu}{+}^{48}\mathrm{Ca},$ we modified Dubna gas-filled recoil separator and its detection system carried out bombardments lead targets ${}^{48}\mathrm{Ca}$ projectiles. We studied excitation functions reactions ${}^{206}\mathrm{Pb}{(}^{48}\mathrm{Ca},1\ensuremath{-}4n)$ ${}^{204,207,208}\mathrm{Pb}{(}^{48}\mathrm{Ca},2n).$ Maximum cross sections evaporation 1--4 neutrons...
In bombardments of ${}^{238}$U targets with 186-MeV ${}^{34}$S projectiles we discovered the $\ensuremath{\alpha}$-decaying nuclide ${}^{267}$108 a half-life ${19}_{\ensuremath{-}10}^{+29}$ ms, ${E}_{\ensuremath{\alpha}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}9.74$ to 9.87 MeV, and production cross section about 2.5 pb. The new was identified by measuring correlations in energy, time, position establish genetic links between its implantation position-sensitive silicon detector...