NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = K.S.Tyrin Found 7 matches. 2023KR04 JETP Lett. 117, 884 (2023) M.I.Krivoruchenko, K.S.Tyrin, F.F.Karpeshin Energy Spectrum of β Electrons in Neutrinoless Double-β Decay Including the Excitation of the Electron Shell of Atoms RADIOACTIVITY 76Ge(2β-); calculated the mean value and standard deviation of the excitation energy of the electron shell of the daughter atom using the Thomas–Fermi and relativistic Dirac–Hartree–Fock methods, β-spectra.
doi: 10.1134/S0021364023601409
2023KR11 JETP Lett. 118, 470 (2023) M.I.Krivoruchenko, K.S.Tyrin, F.F.Karpeshin Atomic Electron Shell Excitations in Double-β Decay RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd, 238U(2β-); analyzed available data; deduced the transition of electron shells of atoms to excited states in the process of neutrinoless double-β decay, an important role of the Feinberg-Migdal effect in the electron shell excitations.
doi: 10.1134/S0021364023602737
2022GE11 Phys.Lett. B 832, 137226 (2022) Z.Ge, T.Eronen, A.de Roubin, K.S.Tyrin, L.Canete, S.Geldhof, A.Jokinen, A.Kankainen, J.Kostensalo, J.Kotila, M.I.Krivoruchenko, I.D.Moore, D.A.Nesterenko, J.Suhonen, M.Vilen High-precision electron-capture Q value measurement of 111In for electron-neutrino mass determination RADIOACTIVITY 111In(EC) [from In(p, X), E=130 MeV]; measured Ramsey time-of-flight ion-cyclotron resonance (TOF-ICR), cyclotron frequency ratios; deduced Q-values to the ground and excited states. Comparison with AME2020 and the microscopic interacting boson-fermion model (IBFM-2) calculations. Ion Guide Isotope Separator On-Line facility (IGISOL) utilizing the JYFLTRAP double Penning trap mass spectrometer.
doi: 10.1016/j.physletb.2022.137226
2022RA20 Phys.Rev. C 106, 015501 (2022) M.Ramalho, Z.Ge, T.Eronen, D.A.Nesterenko, J.Jaatinen, A.Jokinen, A.Kankainen, J.Kostensalo, J.Kotila, M.I.Krivoruchenko, J.Suhonen, K.S.Tyrin, V.Virtanen Observation of an ultralow-Q-value electron-capture channel decaying to 75As via a high-precision mass measurement ATOMIC MASSES 75As, 76Ge; 77Se, 76Se; 94Mo, 95Mo; measured cyclotron frequency ratios using phase-imaging ion-cyclotron-resonance technique (PI-ICR) and high-precision Penning-trap mass spectrometry (PTMS) with a double Penning trap mass spectrometer (JYFLTRAP) at the IGISOL facility of the University of Jyvaskyla; deduced precise Q(β) values for decays of 75Se and 75Ge to 75As, with three ultra-low Q-value energetically valid β transitions, one of which as a possible candidate for antineutrino mass determination. Comparison with evaluated data in AME2020. RADIOACTIVITY 75Se(EC); 75Ge(β-); deduced precise Q(β) values from measurements of difference in mass excesses of 75As and 76Ge, and three ultra-low Q-value energetically valid β transitions, with one as a possible candidate for antineutrino mass determination. Comparison with evaluated data in AME2020. NUCLEAR STRUCTURE 75As; calculated levels, J, π using shell-model code NUSHELLX in a single-particle model space consisting of 1f5/2, 2p3/2, 2p1/2, and 1g9/2 neutron and proton orbitals, with jun45pn and jj44bpn interactions, and compared results with experimental data.
doi: 10.1103/PhysRevC.106.015501
2021GE11 Phys.Rev.Lett. 127, 272301 (2021) Z.Ge, T.Eronen, K.S.Tyrin, J.Kotila, J.Kostensalo, D.A.Nesterenko, O.Beliuskina, R.de Groote, A.de Roubin, S.Geldhof, W.Gins, M.Hukkanen, A.Jokinen, A.Kankainen, A.Koszorus, M.I.Krivoruchenko, S.Kujanpaa, I.D.Moore, A.Raggio, S.Rinta-Antila, J.Suhonen, V.Virtanen, A.P.Weaver, A.Zadvornaya 159Dy Electron-Capture: A New Candidate for Neutrino Mass Determination RADIOACTIVITY 159Dy(EC); measured frequencies; deduced Q-values for allowed Gamow-Teller transition, J, π, total decay constant. The Ion Guide Isotope Separator On-Line facility (IGISOL) using the double Penning trap mass spectrometer JYFLTRAP in the accelerator laboratory of the University of Jyvaskyla.
doi: 10.1103/physrevlett.127.272301
2020KR01 Eur.Phys.J. A 56, 16 (2020) Overlap of electron shells in β and double-β decays
doi: 10.1140/epja/s10050-019-00003-z
2019TY02 Phys.Atomic Nuclei 82, 1627 (2019) K.S.Tyrin, M.I.Krivoruchenko, F.F.Simkovic Internal Ionization of an Atom in the β Decay of Tritium ATOMIC PHYSICS 3H; calculated probability of β-electron (from β- decay of 3H) scattering off a bound electron vs electron momentum and vs kinetic energy; deduced using the results to search and mass determination for keV-scale sterile neutrinos, envisaged within the KATRIN experiment in the middle part of β-sepctrum, where the internal ionization effect is significant.
doi: 10.1134/S1063778819120305
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