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NSR database version of March 18, 2024.

Search: Author = F.Simkovic

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2024NI05      Phys.Rev. C 109, 025501 (2024)

O.Nitescu, R.Dvornicky, F.Simkovic

Atomic corrections for the unique first-forbidden β transition of 187Re

doi: 10.1103/PhysRevC.109.025501
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2023NI03      Phys.Rev. C 107, 025501 (2023)

O.Nitescu, S.Stoica, F.Simkovic

Exchange correction for allowed β decay

RADIOACTIVITY 14C, 45Ca, 63Ni, 241Pu(β-); Z=1-102(β-); calculated Eβ β-spectrum shape, exchange corrections to the β-spectrum, contributions from exchange with occupied orbitals, antineutrino spectra corresponding to the β transitions. Dirac-Hartree-Fock-Slater self-consistent method modified to ensure the orthogonality between the continuum and bound electron states in the potential of the final atom.

doi: 10.1103/PhysRevC.107.025501
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2021AR11      Phys.Rev. C 104, L061601 (2021)

R.Arnold, C.Augier, A.S.Barabash, A.Basharina-Freshville, S.Blondel, S.Blot, M.Bongrand, D.Boursette, R.Breier, V.Brudanin, J.Busto, A.J.Caffrey, S.Calvez, C.Cerna, J.P.Cesar, M.Ceschia, A.Chapon, E.Chauveau, A.Chopra, L.Dawson, D.Duchesneau, D.Durand, G.Eurin, J.J.Evans, L.Fajt, D.Filosofov, R.Flack, P.Franchini, X.Garrido, C.Girard-Carillo, H.Gomez, B.Guillon, P.Guzowski, R.Hodak, A.Huber, P.Hubert, C.Hugon, M.H.Hussain, S.Jullian, A.Klimenko, O.Kochetov, S.I.Konovalov, V.Kovalenko, D.Lalanne, K.Lang, Y.Lemiere, T.Le Noblet, Z.Liptak, X.R.Liu, P.Loaiza, G.Lutter, M.Macko, C.Macolino, F.Mamedov, C.Marquet, F.Mauger, A.Minotti, B.Morgan, J.Mott, I.Nemchenok, M.Nomachi, F.Nova, F.Nowacki, H.Ohsumi, G.Oliviero, R.B.Pahlka, V.Palusova, C.Patrick, F.Perrot, A.Pin, F.Piquemal, P.Povinec, P.Pridal, W.S.Quinn, Y.A.Ramachers, A.Remoto, J.L.Reyss, C.L.Riddle, E.Rukhadze, R.Saakyan, A.Salamatin, R.Salazar, X.Sarazin, J.Sedgbeer, Yu.Shitov, L.Simard, F.Simkovic, A.Smetana, A.Smolnikov, S.Soldner-Rembold, B.Soule, I.Stekl, J.Suhonen, C.S.Sutton, G.Szklarz, H.Tedjditi, J.Thomas, V.Timkin, S.Torre, Vl.I.Tretyak, V.I.Tretyak, V.I.Umatov, I.Vanushin, C.Vilela, V.Vorobel, D.Waters, F.Xie

Search for periodic modulations of the rate of double-β decay of 100Mo in the NEMO-3 detector

RADIOACTIVITY 100Mo(2β-); measured two electrons in final state of 0νββ decay, decay rates and power spectra using NEMO-3 detector; searched for periodic modulations of double-β decay rate by Lomb-Scargle periodogram technique, and its error-weighted extension; deduced no evidence of modulations with amplitude greater than 2.5% at the 95% confidence level.

doi: 10.1103/PhysRevC.104.L061601
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2021NI10      Universe 7, 147 (2021)

O.Nitescu, R.Dvornicky, S.Stoica, F.Simkovic

Angular Distributions of Emitted Electrons in the Two-Neutrino ββ Decay

doi: 10.3390/universe7050147
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2020SI19      Phys.Rev. C 102, 034301 (2020)

F.Simkovic, R.Dvornicky, P.Vogel

Muon capture rates: Evaluation within the quasiparticle random phase approximation

NUCLEAR REACTIONS 48Ti, 76Se, 82Kr, 96Mo, 100Ru, 110Cd, 116Sn, 124Te, 128,130Xe, 134,136Ba, 150Sm(μ-, ν), E(muon binding energy)=1.27-7.14 MeV; calculated muon capture rates for final nuclei participating in double-β decay, energy spectra of muon capture rates on 76Se and 136Ba nuclei using quasiparticle random phase approximation (QRPA) method. Comparison with available experimental capture rates.

doi: 10.1103/PhysRevC.102.034301
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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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2018BA45      Phys.Rev. C 98, 065501 (2018)

A.Babic, D.Stefanik, M.I.Krivoruchenko, F.Simkovic

Bound-state double-β decay

RADIOACTIVITY 46,48Ca, 70Zn, 76Ge, 80,82Se, 86Kr, 94,96Zr, 98,100Mo, 104Ru, 110Pd, 114,116Cd, 122,124Sn, 128,130Te, 134,136Xe, 142Ce, 146,148,150Nd, 154Sm, 160Gd, 170Er, 176Yb, 186W, 192Os, 198Pt, 204Hg, 232Th, 238U(2β-); calculated Fermi sums, bound-state and standard decay phase-space factors, relative frequencies of bound-state to continuum-state decays for 0νββ and 2νββ decay modes. 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128,130Te, 134,136Xe, 150Nd, 238U(2β-); calculated nuclear matrix elements (NMEs) and half-lives for 0νββ and 2νββ decay modes. Bound-state two-neutrino and neutrinoless double-β decays. Calculations used multiconfiguration Dirac-Hartree-Fock package GRASP2K. Relevance to double-β decay experiment NEMO-3, SuperNEMO, and two-electron spectra in the calorimetric experiments CUORE, EXO-200 and GERDA.

doi: 10.1103/PhysRevC.98.065501
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2018FA04      Phys.Rev. C 97, 045503 (2018)

D.-L.Fang, A.Faessler, F.Simkovic

0νββ decay nuclear matrix element for light and heavy neutrino mass mechanisms from deformed quasiparticle random-phase approximation calculations for 76Ge, 82Se, 130Te, 136Xe, and 150Nd with isospin restoration

NUCLEAR STRUCTURE 76Ge, 76Se, 82Se, 82Kr, 130Te, 130Xe, 136Xe, 136Ba, 150Nd, 150Sm; calculated quadrupole deformation parameters, pairing strengths, BCS overlap, particle-particle interaction strengths for the corresponding parent/daughter pair in double beta decay using deformed Wood-Saxon potential with Coulomb corrections.

RADIOACTIVITY 76Ge, 82Se, 130Te, 136Xe, 150Nd(2β-); calculated nuclear matrix elements (NME) for 0νββ decay mode for both light and heavy neutrino mechanisms by deformed quasiparticle random-phase approach using AV18 and CD-Bonn potentials with and without short range correlations (SRC). Comparison with other theoretical calculations. 150Nd; detailed decomposition of NMEs for 150Nd decay into various intermediate channels, and for different model spaces.

doi: 10.1103/PhysRevC.97.045503
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2018SI06      Phys.Rev. C 97, 034315 (2018)

F.Simkovic, R.Dvornicky, D.Stefanik, A.Faessler

Improved description of the 2νββ-decay and a possibility to determine the effective axial-vector coupling constant

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128,130Te, 134,136Xe, 150Nd(2β-); calculated phase-space factors for 2νββ and 0νββ decay modes using standard approximation of Doi et al., and the exact Dirac wave functions with finite nuclear size and electron screening, nuclear matrix elements (NMEs) and ratios of nuclear matrix elements for 2νββ and 0νββ decay modes within the pnQRPA with partial isospin restoration, half-lives for 2νββ-decays, running sum of the 2νββ-decay NMEs, partial and full differential decay rates, endpoints of the spectra of the differential decay rates for 82Se and 100Mo, nuclear matrix elements for 48Ca, 76Ge, 100Mo, 116Cd, 128Te from measured GT+ and GT- strengths in charge-exchange reaction, and effective axial-vector coupling constant gA for 100Mo and 116Cd.

doi: 10.1103/PhysRevC.97.034315
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2018SI33      Phys.Rev. C 98, 064325 (2018)

F.Simkovic, A.Smetana, P.Vogel

0νββ and 2νββ nuclear matrix elements evaluated in closure approximation, neutrino potentials and SU(4) symmetry

RADIOACTIVITY 48Ca, 76Ge, 82Se, 94,96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128,130Te, 134,136Xe(2β-); calculated nuclear matrix elements for 2νββ and 0νββ decay modes within the proton-neutron quasi-random phase approximation (QRPA) using two ways of fixing the strengths of residual interactions in the nuclear Hamiltonian. Spin-isospin SU(4) symmetry. Comparison to available experimental data.

doi: 10.1103/PhysRevC.98.064325
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2017FA03      Phys.Rev. C 95, 045502 (2017)

A.Faessler, L.Gastaldo, F.Simkovic

Neutrino mass, electron capture, and the shake-off contributions

RADIOACTIVITY 163Ho(EC); calculated effect of s-wave shake off on the de-excitation spectrum of the 163Dy atom after electron capture in 163Ho; deduced small effects for the determination of the electron neutrino mass. Sudden approximation used to calculate the spectrum of the decay of 163Dy* atom, and the wave functions of Ho and Dy* determined self-consistently with the antisymmetrized relativistic Dirac-Hartree-Fock approach.

doi: 10.1103/PhysRevC.95.045502
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2017GA14      Eur.Phys.J. Special Topics 226, 1623 (2017)

L.Gastaldo, K.Blaum, K.Chrysalidis, T.Day Goodacre, A.Domula, M.Door, H.Dorrer, Ch.E.Dullmann, K.Eberhardt, S.Eliseev, C.Enss, A.Faessler, P.Filianin, A.Fleischmann, D.Fonnesu, L.Gamer, R.Haas, C.Hassel, D.Hengstler, J.Jochum, K.Johnston, U.Kebschull, S.Kempf, T.Kieck, U.Koster, S.Lahiri, M.Maiti, F.Mantegazzini, B.Marsh, P.Neroutsos, Yu.N.Novikov, P.C.O.Ranitzsch, S.Rothe, A.Rischka, A.Saenz, O.Sander, F.Schneider, S.Scholl, R.X.Schussler, Ch.Schweiger, F.Simkovic, T.Stora, Z.Szucs, A.Turler, M.Veinhard, M.Weber, M.Wegner, K.Wendt and K.Zuber

The electron capture in 163Ho experiment - ECHo

RADIOACTIVITY 163Ho(EC); measured decay products, X-rays; calculated electron capture spectrum; deduced sensitivity towards neutrino mass measurements.

doi: 10.1140/epjst/e2017-70071-y
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2016VE07      Int.J.Mod.Phys. E25, 1630007 (2016)

J.D.Vergados, H.Ejiri, F.Simkovic

Neutrinoless double beta decay and neutrino mass

RADIOACTIVITY 76Ge, 82Se, 100Mo, 116Cd, 130Te, 136Xe, 150Nd(2β-); calculated neutrino mass sensitivities, nuclear matrix elements.

doi: 10.1142/S0218301316300071
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2015BE08      Nucl.Phys. A937, 17 (2015)

V.B.Belyaev, P.Ricci, F.Simkovic, J.Adam, Jr., M.Tater, E.Truhlik

Consequence of total lepton number violation in strongly magnetized iron white dwarfs

doi: 10.1016/j.nuclphysa.2015.02.002
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2015BR14      Phys.Atomic Nuclei 78, 740 (2015); Yad.Fiz. 78, 791 (2015)

Ch.Briancon, V.B.Brudanin, V.G.Egorov, J.M.Jose, A.A.Klimenko, A.Kovalik, S.V.Rosov, E.N.Rukhadze, N.I.Rukhadze, A.V.Salamatin, V.V.Timkin, L.Fajt, R.Hodak, F.Simkovic, Yu.A.Shitov, M.Spavorova, I.Stekl, E.A.Yakushev

New search for double electron capture in 106Cd decay with the TGV-2 spectrometer

RADIOACTIVITY 106Cd(2EC); measured decay products, Eγ, Iγ, X-rays; deduced T1/2 limits.

doi: 10.1134/S1063778815060058
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015FA01      J.Phys.(London) G42, 15108 (2015)

A.Faessler, L.Gastaldo, F.Simkovic

Electron capture in 163Ho, overlap plus exchange corrections and neutrino mass

RADIOACTIVITY 163Ho(EC); analyzed available data; calculated β-spectrum; deduced neutrino mass.

doi: 10.1088/0954-3899/42/1/015108
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2015FA08      Phys.Rev. C 91, 045505 (2015)

A.Faessler, F.Simkovic

Improved description of one- and two-hole excitations after electron capture in 163Ho and the determination of the neutrino mass

RADIOACTIVITY 163Ho(EC); calculated energies, widths and probabilities of one- and two-hole states in 163Dy, ionization energies and two-hole probabilities relative to 3s1/2 state comparing Xe with Ho, theoretical bolometer spectrum, upper 10 and 20 eV of the bolometer spectra for neutrino mass of 0, 2 and 10 eV. Mass of electron antineutrino. Comparison with experimental data from ECHo collaboration. Self-consistent relativistic Dirac-Hartree-Fock (DHF) approach.

doi: 10.1103/PhysRevC.91.045505
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2015FA09      Phys.Rev. C 91, 064302 (2015)

A.Faessler, C.Enss, L.Gastaldo, F.Simkovic

Determination of the neutrino mass by electron capture in 163Ho and the role of the three-hole states in 163Dy

RADIOACTIVITY 163Ho(EC); calculated electron wave functions and the overlaps, three-hole Bolometer spectrum for the sum of the one-, two-, and three-hole probabilities with the known resonance energies and widths; deduced weak strength of three-hole states with no influence on the determination of the neutrino mass. Comparison with data from ECHo Collaboration; Self-consistent fully relativistic and antisymmetrized Dirac-Hartree-Fock calculations in holmium and in dysprosium, including the one-hole and three-hole atomic states in 163Dy.

doi: 10.1103/PhysRevC.91.064302
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2015FA11      Phys.Rev. C 92, 044301 (2015)

D.-L.Fang, A.Faessler, F.Simkovic

Partial restoration of isospin symmetry for neutrinoless double β decay in the deformed nuclear system of 150Nd

RADIOACTIVITY 150Nd(2β-); calculated nuclear matrix elements (NME), Fermi and Gamow-Teller matrix elements for the 0νββ decay mode, decomposition of the matrix elements for different values of Kπ using the deformed quasiparticle random-phase approximation (pn-QRPA) method. Isospin symmetry restoration.

doi: 10.1103/PhysRevC.92.044301
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2015HA24      Phys.Rev. C 92, 044315 (2015)

E.Ha, M.-K.Cheoun, F.Simkovic

Brueckner G-matrix approach for neutron-proton pairing correlations in the deformed BCS approach

NUCLEAR STRUCTURE 64,66,68,70,72,74Ge; calculated pairing potential, neutron-proton pairing gap, proton, neutron and neutron-proton pairing strengths, np pairing gaps as a function of deformation parameter β2, occupation probabilities of neutrons and protons. Brueckner G-matrix approach, based on CD-Bonn potential for neutron-proton (np) pairing correlations in the deformed Bardeen-Cooper-Schrieffer (BCS) theory.

doi: 10.1103/PhysRevC.92.044315
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2015JE02      Nucl.Instrum.Methods Phys.Res. A795, 268 (2015)

M.Jeskovsky, D.Frekers, A.Kovacik, P.P.Povinec, P.Puppe, J.Stanicek, I.Sykora, F.Simkovic, J.H.Thies

A search for double-electron capture of 74Se to excited levels using coincidence/anticoincidence gamma-ray spectrometry

RADIOACTIVITY 74Se(2EC); measured decay products, Eγ, Iγ; deduced T1/2 limit. Comparison with available data.

doi: 10.1016/j.nima.2015.05.071
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015ST11      Phys.Rev. C 91, 064311 (2015)

D.Stefanik, F.Simkovic, A.Faessler

Structure of the two-neutrino double-β decay matrix elements within perturbation theory

doi: 10.1103/PhysRevC.91.064311
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2015ST19      Phys.Rev. C 92, 055502 (2015)

D.Stefanik, R.Dvornicky, F.Simkovic, P.Vogel

Reexamining the light neutrino exchange mechanism of the 0νββ decay with left- and right-handed leptonic and hadronic currents

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 130Te, 136Xe, 150Nd(2β-); calculated kinematical phase-space factors for 0νββ decay mode using exact Dirac wave functions of the s1/2 and p1/2 electrons with finite nuclear size and electron screening taken into account. Mechanism of exchange of a virtual light Majorana neutrino.

doi: 10.1103/PhysRevC.92.055502
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2014EN02      Phys.Rev. C 89, 064308 (2014)

J.Engel, F.Simkovic, P.Vogel

Chiral two-body currents and neutrinoless double-β decay in the quasiparticle random-phase approximation

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 130Te, 136Xe(2β-); calculated matrix elements for 0νββ decay mode with one- and two-body nucleon current operators and the Argonne V18 G-matrix based QRPA, and CD-Bonn interaction with several sets of values for chiral EFT parameters. Discussed quenching of spin operators in nuclei.

doi: 10.1103/PhysRevC.89.064308
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2014GA33      J.Low Temp.Physics 176, 876 (2014)

L.Gastaldo, K.Blaum, A.Doerr, Ch.E.Dullmann, K.Eberhardt, S.Eliseev, C.Enss, A.Faessler, A.Fleischmann, S.Kempf, M.Krivoruchenko, S.Lahiri, M.Maiti, Yu.N.Novikov, P.C.-O.Ranitzsch, F.Simkovic, Z.Szucs, M.Wegner

The Electron Capture 163Ho Experiment ECHo

RADIOACTIVITY 163Ho(EC); measured decay products, X-rays; deduced β-decay spectra, Q-values. Neutrino mass, metallic magnetic calorimeters, SQUID.

doi: 10.1007/s10909-014-1187-4
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2014KO09      Phys.Rev.Lett. 112, 142503 (2014)

S.Kovalenko, M.I.Krivoruchenko, F.Simkovic

Neutrino Propagation in Nuclear Medium and Neutrinoless Double-β Decay

doi: 10.1103/PhysRevLett.112.142503
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2013SI08      Phys.Rev. C 87, 045501 (2013)

F.Simkovic, V.Rodin, A.Faessler, P.Vogel

0νββ and 2νββ nuclear matrix elements, quasiparticle random-phase approximation, and isospin symmetry restoration

RADIOACTIVITY 48Ca, 76Ga, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128,130Te, 134,136Xe(2β-); calculated parameters of pairing interaction, 0νββ and 2νββ matrix elements. Quasiparticle random-phase approximation (QRPA) calculations with Argonne, and CD-Bonn interactions. Proton-neutron interaction separated into isovector (T=1) and isoscalar (T=0) parts.

doi: 10.1103/PhysRevC.87.045501
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2013ST17      Phys.Rev. C 88, 025503 (2013)

D.Stefanik, F.Simkovic, K.Muto, A.Faessler

Two-neutrino double-β decay Fermi transition and two-nucleon interaction

doi: 10.1103/PhysRevC.88.025503
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2012BI07      Phys.Part. and Nucl.Lett. 9, 220 (2012)

S.M.Bilenky, F.Simkovic

A possible probe of neutrinoless double-beta decay nuclear matrix elements

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 124Sn, 128Te, 130Te, 136Xe, 150Nd(2β-); calculated neutrinoless nuclear matrix elements; deduced Majorana neutrino mass. LSSM, EDF, PHFB, IBM-2, QRPA nuclear models, comparison with available data.

doi: 10.1134/S1547477112030041
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2012FA02      Phys.Rev. C 85, 035503 (2012)

D.-L.Fang, K.Blaum, S.Eliseev, A.Faessler, M.I.Krivoruchenko, V.Rodin, F.Simkovic

Evaluation of the resonance enhancement effect in neutrinoless double-electron capture in 152Gd, 164Er, and 180W atoms

RADIOACTIVITY 152Gd, 164Er, 180W(2EC); calculated matrix elements and half-lives for neutrinoless double-electron capture. Deformed quasiparticle random-phase approximation using the realistic charge-dependent Bonn (CD-Bonn) nucleon-nucleon interaction. Comparison of half-life with that for neutrinoless 2β decay of 76Ge.

doi: 10.1103/PhysRevC.85.035503
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2012FA15      J.Phys.(London) G39, 124006 (2012)

A.Faessler, V.Rodin, F.Simkovic

Nuclear matrix elements for neutrinoless double-beta decay and double-electron capture

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); calculated averaged neutrinoless nuclear matrix elements, T1/2. QRPA, RQRPA methods.

doi: 10.1088/0954-3899/39/12/124006
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2012FI01      Phys.Rev.Lett. 108, 062502 (2012)

D.Fink, J.Barea, D.Beck, K.Blaum, Ch.Bohm, Ch.Borgmann, M.Breitenfeldt, F.Herfurth, A.Herlert, J.Kotila, M.Kowalska, S.Kreim, D.Lunney, S.Naimi, M.Rosenbusch, S.Schwarz, L.Schweikhard, F.Simkovic, J.Stanja, K.Zuber

Q Value and Half-Lives for the Double-β-Decay Nuclide 110Pd

RADIOACTIVITY 110Pd(2β-); measured resonance frequencies;deduced precise Q-value. Comparison with AME2003 atomic mass evaluation, phase-space factor calculations.

doi: 10.1103/PhysRevLett.108.062502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012RU07      Nucl.Phys. B(Proc.Supp.) S229-232, 478 (2012)

N.I.Rukhadze, Ch.Briancon, V.B.Brudanin, P.Cermak, V.G.Egorov, A.A.Klimenko, A.Kovalik, E.N.Rukhadze, Yu.A.Shitov, F.Simkovic, I.Stekl, V.V.Timkin

Experiment TGV-2 - Search for double beta decay of 106Cd

RADIOACTIVITY 106Cd(2EC); measured decay products, EnullIγ, X-rays; deduced T1/2 limits. TGV-2 spectrometer.

doi: 10.1016/j.nuclphysbps.2012.09.115
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2012RU08      J.Phys.:Conf.Ser. 375, 042020 (2012)

N.I.Rukhadze, A.M.Bakalyarov, Ch.Briancon, V.B.Brudanin, P.cermak, V.G.Egorov, A.A.Klimenko, A.Kovalik, V.I.Lebedev, E.N.Rukhadze, F.Mamedov, Y.A.Shitov, F.Simkovic, I.Stekl, V.V.Timkin, S.V.Zhukov

Experiment TGV-2. Search for double beta decay of 106Cd

RADIOACTIVITY 106Cd(2EC); measured decay products, EnullIγ; deduced T1/2 limits. Comparison with available data.

doi: 10.1088/1742-6596/375/1/042020
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2012SI25      J.Phys.:Conf.Ser. 366, 012041 (2012)

F.Simkovic

Massive Majorana neutrinos in nuclear processes

doi: 10.1088/1742-6596/366/1/012041
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2012VE07      Rep.Prog.Phys. 75, 103601 (2012)

J.D.Vergados, H.Ejiri, F.Simkovic

Theory of neutrinoless double-beta decay

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 110Pd, 116Cd, 124Sn, 128,130Te, 136Xe, 150Nd(2β-); calculated nuclear matrix elements. Comparison with available data.

doi: 10.1088/0034-4885/75/10/106301
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2011DV01      Phys.Rev. C 83, 045502 (2011)

R.Dvornicky, K.Muto, F.Simkovic, A.Faessler

Absolute mass of neutrinos and the first unique forbidden β decay of 187Re

RADIOACTIVITY 187Re(β-); calculated end points of the Kurie plot of the electron spectrum from first-forbidden unique β decay of 187Re for various values of the effective neutrino mass. Relevance to planned MARE-I and MARE-II experiments.

doi: 10.1103/PhysRevC.83.045502
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2011EL02      Phys.Rev.Lett. 106, 052504 (2011)

S.Eliseev, C.Roux, K.Blaum, M.Block, C.Droese, F.Herfurth, H.-J.Kluge, M.I.Krivoruchenko, Yu.N.Novikov, E.Minaya-Ramirez, L.Schweikhard, V.M.Shabaev, F.Simkovic, I.I.Tupitsyn, K.Zuber, N.A.Zubova

Resonant Enhancement of Neutrinoless Double-Electron Capture in 152Gd

ATOMIC MASSES 152Gd, 152Sm; measured cyclotron frequency ratio, TOF; deduced Q-value for double beta decay. Penning-trap mass ratio.

doi: 10.1103/PhysRevLett.106.052504
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2011EL08      Phys.Rev.Lett. 107, 152501 (2011)

S.Eliseev, C.Roux, K.Blaum, M.Block, C.Droese, F.Herfurth, M.Kretzschmar, M.I.Krivoruchenko, E.Minaya-Ramirez, Yu.N.Novikov, L.Schweikhard, V.M.Shabaev, F.Simkovic, I.I.Tupitsyn, K.Zuber, N.A.Zubova

Octupolar-Excitation Penning-Trap Mass Spectrometry for Q-Value Measurement of Double-Electron Capture in 164Er

ATOMIC MASSES 164Er, 164Dy; measured relative frequency deviations; deduced doublet mass ratio, Q-value. Penning trap.

doi: 10.1103/PhysRevLett.107.152501
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2011FA02      Phys.Rev. C 83, 034320 (2011)

D.Fang, A.Faessler, V.Rodin, F.Simkovic

Neutrinoless double-β decay of deformed nuclei within quasiparticle random-phase approximation with a realistic interaction

RADIOACTIVITY 76Ge, 150Nd, 160Gd(2β-); calculated nuclear matrix elements for neutrinoless double β decay using quasiparticle random-phase approximation with realistic residual interaction. Analyzed short-range correlations and the quenching of the axial vector coupling constant. 150Nd; probe of the Majorana neutrino mass.

doi: 10.1103/PhysRevC.83.034320
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2011FR08      Nucl.Phys. A860, 1 (2011)

D.Frekers, P.Puppe, J.H.Thies, P.P.Povinec, F.Simkovic, J.Stanicek, I.Sykora

Double-electron capture of 74Se and the search for neutrinoless decay

RADIOACTIVITY 74Se(2EC); measured Eγ, Iγ, γγ-coin; deduced T1/2 limit.

doi: 10.1016/j.nuclphysa.2011.05.002
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Data from this article have been entered in the XUNDL database. For more information, click here.


2011FR15      Phys.Lett. B 706, 134 (2011)

D.Frekers, H.Ejiri, H.Akimune, T.Adachi, B.Bilgier, B.A.Brown, B.T.Cleveland, H.Fujita, Y.Fujita, M.Fujiwara, E.Ganioglu, V.N.Gavrin, E.-W.Grewe, C.J.Guess, M.N.Harakeh, K.Hatanaka, R.Hodak, M.Holl, C.Iwamoto, N.T.Khai, H.C.Kozer, A.Lennarz, A.Okamoto, H.Okamura, P.P.Povinec, P.Puppe, F.Simkovic, G.Susoy, T.Suzuki, A.Tamii, J.H.Thies, J.Van de Walle, R.G.T.Zegers

The 71Ga(3He, t) reaction and the low-energy neutrino response

NUCLEAR REACTIONS 71Ga(3He, t), E=420 MeV; measured reaction products; deduced isobaric-analogue resonance yields, σ(θ), Gamow-Teller strength values. SAGE and GALLEX calibration implications.

doi: 10.1016/j.physletb.2011.10.061
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2361.


2011KR07      Nucl.Phys. A859, 140 (2011)

M.I.Krivoruchenko, F.Simkovic, D.Frekers, A.Faessler

Resonance enhancement of neutrinoless double electron capture

RADIOACTIVITY 96Ru, 106Cd, 124Xe, 136Ce, 152Gd, 156Dy, 154Er, 168Yb, 180W, 184Os, 190Pt(2β+); 78Kr, 96Ru, 106Cd, 112Sn, 130Ba, 162Er, 184Os(2EC); calculated T1/2 limits, nuclear matrix elements; deduced ν mass limits.

doi: 10.1016/j.nuclphysa.2011.04.009
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2011RU05      Nucl.Phys. A852, 197 (2011)

N.I.Rukhadze, A.M.Bakalyarov, Ch.Briancon, V.B.Brudanin, P.Cermak, V.G.Egorov, A.A.Klimenko, A.Kovalik, V.I.Lebedev, F.Mamedov, Yu.A.Shitov, F.Simkovic, I.Stekl, V.V.Timkin, S.V.Zhukov

New limits on double beta decay of 106Cd

RADIOACTIVITY 106Cd(2EC); measured E(K X-ray), I(K X-ray), Eγ, Iγ, (K X-ray)(K X-ray)-, (K X-ray)γ-coin using TGV-2 spectrometer; deduced T1/2 lower limits for double- and zero-neutrino accompanied 2EC-decay. Comparison with calculations. Modane underground laboratory.

doi: 10.1016/j.nuclphysa.2011.01.006
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Data from this article have been entered in the XUNDL database. For more information, click here.


2011RU10      Bull.Rus.Acad.Sci.Phys. 75, 879 (2011)

N.I.Rukhadze, Ch.Briancon, V.B.Brudanin, V.G.Egorov, A.A.Klimenko, A.Kovalik, V.V.Timkin, P.Chermak, Yu.A.Shitov, F.Simkovic, I.Stekl

Search for double beta decay of 106Cd

RADIOACTIVITY 106Cd(2β+), (β+EC), (2EC); measured decay products, Eγ, Iγ, X-rays; deduced T1/2 limits. TGV-2 multidetector germanium spectrometer.

doi: 10.3103/S1062873811070318
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2011SI02      Phys.Rev. C 83, 015502 (2011)

F.Simkovic, R.Hodak, A.Faessler, P.Vogel

Relation between the 0νββ and 2νββ nuclear matrix elements reexamined

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 130Te, 136Xe(2β-); calculated Gamow-Teller part of the nuclear matrix elements for 0νββ decay mode using quasiparticle random-phase approximation (QRPA); deduced nuclear matrix elements for 2νββ decay mode from experimental data.

doi: 10.1103/PhysRevC.83.015502
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2010ES06      J.Phys.(London) G37, 125108 (2010)

A.Escuderos, A.Faessler, V.Rodin, F.Simkovic

Contributions of different neutron pairs in different approaches for neutrinoless double-beta decay

RADIOACTIVITY 48Ca, 76Ge, 82Se, 94,96Zr, 98,100Mo, 104Ru, 110Pd, 116Cd, 124Sn, 128,130Te, 136Xe, 150Nd, 154Sm(2β-); calculated the neutrinoless 2β-decay matrix elements. QRPA, shell, HFB, IBM models.

doi: 10.1088/0954-3899/37/12/125108
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2010FA03      Phys.Rev. C 81, 037303 (2010)

D.Fang, A.Faessler, V.Rodin, M.Saleh Yousef, F.Simkovic

Running sums for 2νββ-decay matrix elements within the quasiparticle random-phase approximation with account for deformation

RADIOACTIVITY 76Ge, 150Nd(2β-); calculated matrix elements (running sums) for 2-neutrino double β decay using deformation and p-p strength parameters in quasiparticle random-phase approximation (QRPA) approach.

doi: 10.1103/PhysRevC.81.037303
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2010FA17      Phys.Rev. C 82, 051301 (2010)

D.-L.Fang, A.Faessler, V.Rodin, F.Simkovic

Neutrinoless double-β decay of 150Nd accounting for deformation

NUCLEAR STRUCTURE 150Nd(2β-); calculated neutrinoless double-beta decay matrix elements while accounting for β2 deformation parameter. Microscopic calculation with quasiparticle random phase approximation (QRPA) approach and realistic residual interaction. Relevance for SNO+ collaboration and the best sensitivity for the Majorana neutrino mass measurement.

doi: 10.1103/PhysRevC.82.051301
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2010MU01      Prog.Part.Nucl.Phys. 64, 228 (2010)

K.Muto, R.Dvornicky, F.Simkovic

Nuclear structure aspects of single and double beta decays for neutrino mass

NUCLEAR STRUCTURE 187Re; calculated log ft.

doi: 10.1016/j.ppnp.2009.12.016
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2010SI05      Prog.Part.Nucl.Phys. 64, 219 (2010)

F.Simkovic

Double beta decay: A problem of particle, nuclear and atomic physics

NUCLEAR STRUCTURE 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 130Te, 136Xe, 150Nd, 162Er, 156Dy, 152Gd, 112Sn, 74Se; calculated 2β-decay T1/2, neutrinoless nuclear matrix elements.

doi: 10.1016/j.ppnp.2009.12.015
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2009MO01      J.Phys.(London) G36, 015106 (2009)

O.Moreno, R.Alvarez-Rodriguez, P.Sarriguren, E.Moya de Guerra, F.Simkovic, A.Faessler

Single- and low-lying-states dominance in two-neutrino double-beta decay

RADIOACTIVITY 100Mo, 116Cd, 128Te(2β-); calculated matrix elements, decay rates. Single, low lying state dominance.

doi: 10.1088/0954-3899/36/1/015106
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2009SA04      Phys.Rev. C 79, 014314 (2009)

M.Saleh Yousef, V.Rodin, A.Faessler, F.Simkovic

Two-neutrino double β decay of deformed nuclei within the quasiparticle random-phase approximation with a realistic interaction

RADIOACTIVITY 76Ge(2β-), 150Nd(2β-); calculated excitation energies, Gamow-Teller strength distributions. Quasiparticle random phase approximation.

doi: 10.1103/PhysRevC.79.014314
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2009SI04      Phys.Rev. C 79, 015502 (2009)

F.Simkovic, A.Faessler, P.Vogel

0νββ nuclear matrix elements and the occupancy of individual orbits

RADIOACTIVITY 76Ge, 82Se(2β-); calculated matrix elements and occupancies of neutron and proton orbitals using self-consistent renormalized quasiparticle random phase approximation.

doi: 10.1103/PhysRevC.79.015502
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2009SI11      Phys.Rev. C 79, 055501 (2009)

F.Simkovic, A.Faessler, H.Muther, V.Rodin, M.Stauf

0ν ΒΒ-decay nuclear matrix elements with self-consistent short-range correlations

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 130Te, 136Xe(2β-); calculated nucleon wave function, ratio of neutrino potentials and nuclear matrix elements for neutrinoless double beta decay using renormalized quasiparticle random phase approximation (RQRPA) and standard QRPA methods.

doi: 10.1103/PhysRevC.79.055501
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2008SI14      Phys.Rev. C 77, 045503 (2008)

F.Simkovic, A.Faessler, V.Rodin, P.Vogel, J.Engel

Anatomy of the 0νββ nuclear matrix elements

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe (2β-); calculated angular momenta, half-lives, neutrinoless double β decay matrix elements. Quasiparticle random phase approximation.

doi: 10.1103/PhysRevC.77.045503
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2008SI18      Phys.Rev. C 77, 055502 (2008)

F.Simkovic, R.Dvornicky, A.Faessler

Exact relativistic tritium β-decay endpoint spectrum in a hadron model

RADIOACTIVITY 3H(β-); calculated endpoint spectra. n(β-); systematics. Hadron model.

doi: 10.1103/PhysRevC.77.055502
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2006AL08      Prog.Part.Nucl.Phys. 57, 251 (2006)

R.Alvarez-Rodriguez, P.Sarriguren, E.Moya de Guerra, L.Pacearescu, A.Faessler, F.Simkovic

Effect of deformation on two-neutrino double beta decay matrix elements

NUCLEAR STRUCTURE 100Mo; calculated Gamow-Teller strength distributions, 2νββ-decay matrix elements, deformation effects.

doi: 10.1016/j.ppnp.2005.10.003
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2006BE16      Prog.Part.Nucl.Phys. 57, 257 (2006)

P.Benes, F.Simkovic, A.Faessler, W.A.Kaminski

Neutrinoless double β-decay nuclear matrix elements within the SRQRPA

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd(2β-); calculated 0νββ-decay matrix elements. Self-consistent renormalized quasiparticle RPA.

doi: 10.1016/j.ppnp.2005.11.020
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2006BE40      Acta Phys.Pol. B37, 1927 (2006)

P.Benes, A.Bobyk, W.A.Kaminski, A.Faessler, F.Simkovic

Neutrinoless double β-decay nuclear matrix elements within QRPA and its variants

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd(2β-); calculated 0νββ-decay matrix elements. Self-consistent renormalized quasiparticle RPA.


2006MO05      Int.J.Mod.Phys. E15, 659 (2006)

Ch.C.Moustakidis, T.S.Kosmas, F.Simkovic, A.Faessler

The effects of deformation and pairing correlations on nuclear charge form factor

NUCLEAR STRUCTURE 24,26Mg, 28Si, 32S; calculated charge form factors, quadrupole moments, deformation, pairing correlations.

doi: 10.1142/S0218301306004570
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2006RO04      Nucl.Phys. A766, 107 (2006); Erratum Nucl.Phys. A793, 213 (2007)

V.A.Rodin, A.Faessler, F.Simkovic, P.Vogel

Assessment of uncertainties in QRPA 0νββ-decay nuclear matrix elements

NUCLEAR STRUCTURE 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd; calculated 0ν-accompanied 2β-decay matrix elements. Quasiparticle RPA and renormalized quasiparticle RPA.

doi: 10.1016/j.nuclphysa.2005.12.004
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2006RO25      Czech.J.Phys. 56, 495 (2006)

V.Rodin, A.Faessler, F.Simkovic, P.Vogel

Uncertainties in the 0νββ-decay nuclear matrix elements

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe(2β-); analyzed 0νββ-decay matrix elements, uncertainties. Quasiparticle RPA, renormalized quasiparticle RPA.

doi: 10.1007/s10582-006-0113-7
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2006SI12      Prog.Part.Nucl.Phys. 57, 185 (2006)

F.Simkovic

Double beta decay, nuclear structure and physics beyond the standard model

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd(2β-); analyzed 0νββ- and 2νββ-decay T1/2, nuclear matrix elements, neutrino mass limits.

doi: 10.1016/j.ppnp.2006.01.004
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2006ST11      Czech.J.Phys. 56, 505 (2006)

I.Stekl, P.Cermak, P.Benes, V.B.Brudanin, K.N.Gusev, V.G.Egorov, A.A.Klimenko, V.E.Kovalenko, A.Kovalik, N.I.Rukhadze, A.V.Salamatin, V.V.Timkin, Ts.Vylov, Ch.Briancon, F.Simkovic

First results for the measurement of double-electron capture of 106Cd in the experiment TGV II

RADIOACTIVITY 106Cd(2EC); measured 2νββ-decay T1/2 lower limits for transitions to ground and excited states.

doi: 10.1007/s10582-006-0114-6
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2005AR27      Phys.Rev.Lett. 95, 182302 (2005)

R.Arnold, C.Augier, J.Baker, A.Barabash, G.Broudin, V.Brudanin, A.J.Caffrey, E.Caurier, V.Egorov, K.Errahmane, A.I.Etienvre, J.L.Guyonnet, F.Hubert, Ph.Hubert, C.Jollet, S.Jullian, O.Kochetov, V.Kovalenko, S.Konovalov, D.Lalanne, F.Leccia, C.Longuemare, G.Lutter, Ch.Marquet, F.Mauger, F.Nowacki, H.Ohsumi, F.Piquemal, J.L.Reyss, R.Saakyan, X.Sarazin, L.Simard, F.Simkovic, Yu.Shitov, A.Smolnikov, L.Stekl, J.Suhonen, C.S.Sutton, G.Szklarz, J.Thomas, V.Timkin, V.Tretyak, V.Umatov, L.Vala, I.Vanushin, V.Vasilyev, V.Vorobel, Ts.Vylov

First Results of the Search for Neutrinoless Double-Beta Decay with the NEMO 3 Detector

RADIOACTIVITY 82Se, 100Mo(2β-); measured 2νββ-decay T1/2, 0νββ-decay T1/2 lower limits; deduced neutrino mass limits.

doi: 10.1103/PhysRevLett.95.182302
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2005BE29      Phys.Rev. D 71, 077901 (2005)

P.Benes, A.Faessler, S.Kovalenko, F.Simkovic

Sterile neutrinos in neutrinoless double beta decay

doi: 10.1103/PhysRevD.71.077901
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2005BE55      Fiz.Elem.Chastits At.Yadra 36, 257 (2005); Physics of Part.and Nuclei 36, 131 (2005)

V.A.Bednyakov, F.Simkovic

Nuclear Spin Structure in the Search for Dark Matter: The Zero-Momentum-Transfer Limit

NUCLEAR STRUCTURE 1H, 3He, 7Li, 9Be, 11B, 13C, 15N, 17O, 19F, 21Ne, 23Na, 25Mg, 27Al, 29Si, 35Cl, 39K, 47,49Ti, 51V, 55Mn, 59Co, 67Zn, 69,71Ga, 73Ge, 73As, 79,81Br, 91Zr, 93Nb, 99,101Ru, 107,109Ag, 111,113,115Cd, 115,117Sn, 121,123Sb, 123,125Te, 125,127I, 129,131,133Xe, 133,135Cs, 135Ba, 137,139La, 155,157Gd, 183W, 191Ir, 199,201Hg, 203,205Tl, 207Pb, 209Bi; calculated neutron and proton total spin excitation values. Several models compared, application to dark-matter search discussed.


2005BI21      Phys.Rev. D 72, 053015 (2005)

S.M.Bilenky, A.Faessler, T.Gutsche, F.Simkovic

Neutrinoless double beta-decay and neutrino mass hierarchies

RADIOACTIVITY 76Ge, 82Se, 100Mo, 116Cd, 130Te, 136Xe(2β-); calculated 0νββ-decay T1/2, neutrino mass dependence.

doi: 10.1103/PhysRevD.72.053015
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2005DO07      Nucl.Phys. A753, 337 (2005)

P.Domin, S.Kovalenko, F.Simkovic, S.V.Semenov

Neutrino accompanied β±β±, β+/EC and EC/EC processes within single state dominance hypothesis

RADIOACTIVITY 70Zn, 80Se, 100Mo, 104Ru, 110Pd, 114,116Cd, 128Te(2β-); 78Kr, 106Cd, 130Ba(2β+); 64Zn, 78Kr, 106Cd, 112Sn, 130Ba(β+EC); 64Zn, 78Kr, 106,108Cd, 112Sn, 130Ba(2EC); calculated 2νββ-decay T1/2. Single state dominance hypothesis, comparison with data.

doi: 10.1016/j.nuclphysa.2005.03.003
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2004AL36      Phys.Rev. C 70, 064309 (2004)

R.Alvarez-Rodriguez, P.Sarriguren, E.Moya de Guerra, L.Pacearescu, A.Faessler, F.Simkovic

Deformed quasiparticle random phase approximation formalism for single- and two-neutrino double β decay

NUCLEAR STRUCTURE 48Ca, 48Ti, 76Ge, 76,82Se, 82Kr, 96Zr, 96,100Mo, 100Ru, 116Cd, 116Sn, 128,130Te, 128,130,136Xe, 136Ba, 150Nd, 150Sm; calculated pairing energies, deformation, Gamow-Teller strength distributions, 2β-decay matrix elements and Q-values. Deformed quasiparticle RPA approach.

doi: 10.1103/PhysRevC.70.064309
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2004DO18      Phys.Rev. C 70, 065501 (2004)

P.Domin, S.Kovalenko, A.Faessler, F.Simkovic

Nuclear (μ-, e+) conversion mediated by Majorana neutrinos

NUCLEAR REACTIONS 48Ti(μ-, e+), E not given; calculated matrix elements, conversion rates.

doi: 10.1103/PhysRevC.70.065501
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2004FA12      Phys.Lett. B 590, 57 (2004)

A.Faessler, Th.Gutsche, S.Kovalenko, V.E.Lyubovitskij, I.Schmidt, F.Simkovic

Vector mesons in nuclear μ- - e- conversion

NUCLEAR REACTIONS 48Ti(μ-, e-), E=low; analyzed muon-electron conversion data; deduced lepton flavor violation parameter limits.

doi: 10.1016/j.physletb.2004.03.068
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2004PA25      Yad.Fiz. 67, 1232 (2004); Phys.Atomic Nuclei 67, 1210 (2004)

L.Pacearescu, A.Faessler, F.Simkovic

Nuclear Deformation and the Double-Beta Decay

RADIOACTIVITY 76Ge(2β-); calculated 2ν-accompanied 2β decay matrix elements, T1/2. Comparison with data.

doi: 10.1134/1.1772462
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2004SI07      Nucl.Phys. A733, 321 (2004)

F.Simkovic, L.Pacearescu, A.Faessler

Two-neutrino double beta decay of 76Ge within deformed QRPA

RADIOACTIVITY 76Ge(2β-); calculated 2ν-accompanied 2β decay matrix elements, transition amplitudes, deformation effects. Deformed quasiparticle RPA.

doi: 10.1016/j.nuclphysa.2004.01.002
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2003PA53      Phys.Rev. C 68, 064310 (2003); Erratum Phys.Rev. C 75, 059902 (2007)

L.Pacearescu, V.Rodin, F.Simkovic, A.Faessler

Two-neutrino double β decay within fully renormalized quasiparticle random-phase approximation: Effect of the restoration of the Ikeda sum rule

NUCLEAR STRUCTURE 76Ge, 82Se, 100Mo, 116Cd, 128Te, 130Xe; calculated matrix elements for 2ν-accompanied 2β-decay, effect of sum rule. Fully renormalized quasiparticle RPA.

doi: 10.1103/PhysRevC.68.064310
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2003RO18      Phys.Rev. C 68, 044302 (2003)

V.A.Rodin, A.Faessler, F.Simkovic, P.Vogel

Uncertainty in one 0νββ decay nuclear matrix elements

NUCLEAR STRUCTURE 76Ge, 100Mo, 130Te, 136Xe; calculated 0ν-accompanied 2β-decay matrix elements. Renormalized quasiparticle RPA.

doi: 10.1103/PhysRevC.68.044302
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2003SA15      Phys.Rev. C 67, 044313 (2003)

P.Sarriguren, E.Moya de Guerra, L.Pacearescu, A.Faessler, F.Simkovic, A.A.Raduta

Gamow-Teller strength distributions in 76Ge and 76Se from deformed quasiparticle random-phase approximation

NUCLEAR STRUCTURE 76Ge, 76Se; calculated radii, quadrupole deformations, Gamow-Teller strength distributions. Deformed quasiparticle RPA, self-consistent and phenomenological approaches, comparison with data. Application to double beta decay discussed.

doi: 10.1103/PhysRevC.67.044313
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2003SI09      Phys.Rev. C 68, 014309 (2003)

F.Simkovic, M.Smotlak, G.Pantis

Quasiparticle random phase approximation with a nonlinear phonon operator

doi: 10.1103/PhysRevC.68.014309
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2003SI20      Phys.Rev. C 68, 054319 (2003)

F.Simkovic, Ch.C.Moustakidis, L.Pacearescu, A.Faessler

Proton-neutron pairing in the deformed BCS approach

NUCLEAR STRUCTURE 64,66,68,70,72,74,76Ge; calculated neutron proton pair gaps, interaction energy, related features. Deformed BCS approach.

doi: 10.1103/PhysRevC.68.054319
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2002BO24      Czech.J.Phys. 52, 615 (2002)

A.Bobyk, W.A.Kaminski, M.Gozdz, P.Zareba, F.Simkovic

Self-Consistent Renormalized Quasiparticle Random Phase Approximation and Its Application to 2νββ and 0νββ Decays

RADIOACTIVITY 104Ru, 110Pd, 128,130Te, 134,136Xe, 142Ce, 146,148,150Nd(2β-); calculated Gamow-Teller matrix elements. Self-consistent renormalized quasiparticle RPA.

doi: 10.1023/A:1015381915629
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2002DO07      Czech.J.Phys. 52, 451 (2002)

P.Domin, F.Simkovic, S.V.Semenov, Yu.V.Gaponov

Phenomenological Study of Solar-Neutrino-Induced ββ Process of 100Mo

NUCLEAR REACTIONS 100Mo(ν, X), E < 20 MeV; calculated neutrino-induced 2β-decay rates, related features.

doi: 10.1023/A:1015344907452
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2002PA28      Czech.J.Phys. 52, 629 (2002)

G.Pantis, M.Smotlak, F.Simkovic

A Schematic Calculation of the ββ-Decay Matrix Element within the Green Function Approach

doi: 10.1023/A:1015334032468
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2002SE11      Yad.Fiz. 65, 2247 (2002); Phy.Atomic Nuclei 65, 2184 (2002)

S.V.Semenov, Yu.V.Gaponov, F.Simkovic, P.Domin

Analysis of Solar-Neutrino-Induced ββ Processes for Several Nuclei

NUCLEAR REACTIONS 18O, 112,114,116Cd(ν, X), (ν, 2e), E=spectrum; calculated solar neutrino absorption rates, 2β production rates.

doi: 10.1134/1.1530298
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2002SI12      Czech.J.Phys. 52, 607 (2002)

F.Simkovic

Neutrinoless Double-Beta Decay to Excited 0+ States Mediated by Light Majorana Neutrinos

RADIOACTIVITY 76Ge, 82Se, 100Mo, 136Xe(2β-); calculated 0ν-accompanied 2β-decay T1/2 for decay to ground, excited 0+ states.

doi: 10.1023/A:1015329931559
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2002SI15      Prog.Part.Nucl.Phys. 48, 201 (2002)

F.Simkovic, A.Faessler

Distinguishing the 0νββ-Decay Mechanisms

RADIOACTIVITY 76Ge, 82Se, 100Mo, 136Xe(2β-); calculated 0ν-accompanied 2β-decay suppression ratios for decay to excited state.

doi: 10.1016/S0146-6410(02)00125-4
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2002SI22      Phys.Rev. D66, 033005 (2002)

F.Simkovic, A.Faessler, S.Kovalenko, I.Schmidt

-, μ+) conversion in nuclei as a probe of new physics

NUCLEAR REACTIONS 44Ti(μ-, μ+), E not given; calculated matrix elements, reaction rate. Lepton-number violation, comparison with neutrinoless two-beta decay.

doi: 10.1103/PhysRevD.66.033005
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2002SI23      Phys.Lett. 544B, 121 (2002)

F.Simkovic, V.E.Lyubovitskij, T.Gutsche, A.Faessler, S.Kovalenko

New aspects of muon-electron nuclear conversion

NUCLEAR REACTIONS 27Al, 48Ti, 197Au(μ-, e-), E not given; calculated matrix elements for muon-electron conversion, tree-level contribution from neutrino exchange.

doi: 10.1016/S0370-2693(02)02466-8
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2002SM08      Czech.J.Phys. 52, 521 (2002)

M.Smotlak, F.Simkovic, A.A.Raduta

Looking for an Optimal Ground State within Quasiparticle Random Phase Approximation

doi: 10.1023/A:1015309327016
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2002ST17      Czech.J.Phys. 52, 541 (2002)

I.Stekl, P.Cermak, P.Benes, V.B.Brudanin, N.I.Rukhadze, V.G.Egorov, V.E.Kovalenko, A.Kovalik, A.V.Salamatin, Ts.Vylov, F.Simkovic

Present Status of the Experiment TGV II

doi: 10.1023/A:1015313527925
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2001BO17      Phys.Rev. C63, 051301 (2001)

A.Bobyk, W.A.Kaminski, F.Simkovic

Neutrinoless Double β Decay within the Self-Consistent Renormalized Quasiparticle Random Phase Approximation and Inclusion of Induced Nucleon Currents

NUCLEAR STRUCTURE 76Ge; calculated matrix elements for 0ν-accompanied 2β-decay. Self-consistent renormalized quasiparticle RPA.

RADIOACTIVITY 76Ge(2β); calculated matrix elements for 0ν-accompanied 2β-decay. Self-consistent renormalized quasiparticle RPA.

doi: 10.1103/PhysRevC.63.051301
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2001FA10      Prog.Part.Nucl.Phys. 46, 233 (2001)

A.Faessler, F.Simkovic

Nuclear Structure and the Double Beta Decay

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd(2β-); analyzed neutrinoless 2β-decay T1/2 limits, related parameters, symmetry-violating features.

doi: 10.1016/S0146-6410(01)00129-6
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2001RA40      J.Phys.(London) G27, 2429 (2001)

A.A.Raduta, O.Haug, F.Simkovic, A.Faessler

New Results for 2νββ Decay with Large Particle-Particle Two-Body Proton-Neutron Interaction

doi: 10.1088/0954-3899/27/12/306
Citations: PlumX Metrics


2001SE17      Part. and Nucl., Lett. 109, 26 (2001)

S.V.Semenov, F.Simkovic, P.Domin

The Single State Dominance in 2νββ-Decay Transitions to Excited 0+ and 2+ Final State

RADIOACTIVITY 110Pd, 114,116Cd, 128Te(2β-); calculated 2ν-accompanied 2β-decay T1/2. Single state dominance hypothesis.


2001SI31      J.Phys.(London) G27, 1757 (2001)

F.Simkovic, M.Smotlak, A.A.Raduta

Quasiparticle Random-Phase Approximation with an Optimal Ground State

doi: 10.1088/0954-3899/27/8/305
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2001SI33      Phys.Rev. C64, 035501 (2001)

F.Simkovic, M.Nowak, W.A.Kaminski, A.A.Raduta, A.Faessler

Neutrinoless Double Beta Decay of 76Ge, 82Se, 100Mo, and 136Xe to Excited 0+ States

RADIOACTIVITY 76Ge, 82Se, 100Mo, 136Xe(2β-); calculated T1/2 for neutrinoless 2β-decay to ground and excited 0+ states.

doi: 10.1103/PhysRevC.64.035501
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2001SI37      Part. and Nucl., Lett. 104, 40 (2001)

F.Simkovic, P.Domin, S.G.Kovalenko, A.Faessler

The (μ-, e+) Conversion in Nuclei Mediated by Light Majorana Neutrinos

NUCLEAR REACTIONS 48Ti(μ-, e+), E not given; calculated matrix elements. Light Majorana neutrino exchange mechanism.


2001SI42      J.Phys.(London) G27, 2233 (2001)

F.Simkovic, P.Domin, S.V.Semenov

The Single State Dominance Hypothesis and the Two-Neutrino Double Beta Decay of 100Mo

RADIOACTIVITY 100Mo(2β-); calculated 2ν-accompanied 2β-decay T1/2 for transitions to ground and excited states. Single state dominance hypothesis. Comparisons with data.

doi: 10.1088/0954-3899/27/11/304
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2000FA14      Yad.Fiz. 63, No 7, 1240 (2000); Phys.Atomic Nuclei 63, 1165 (2000)

A.Faessler, F.Simkovic

Test of Physics Beyond the Standard Model in Nuclei

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd(2β-); analyzed 0ν accompanied 2β decay T1/2, related parameters.

doi: 10.1134/1.855762
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2000PA25      Nucl.Phys. A663-664, 825c (2000)

G.Pantis, F.Simkovic

Higher Order Terms of the Nucleon Current in the Neutrino Mass Mechanism of Neutrinoless Double Beta Decay

RADIOACTIVITY 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128,130Te, 136Xe, 150Nd(2β); calculated oν-accompanied 2β-decay nuclear matrix elements; deduced limits on lepton number violating parameters.

doi: 10.1016/S0375-9474(99)00778-2
Citations: PlumX Metrics


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Note: The following list of authors and aliases matches the search parameter F.Simkovic: , F.F.SIMKOVIC