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NSR database version of April 11, 2024.

Search: Author = R.A.Senkov

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2018KA12      At.Data Nucl.Data Tables 120, 1 (2018)

S.Karampagia, R.A.Senkov, V.Zelevinsky

Level density of the sd-nuclei-Statistical shell-model predictions

NUCLEAR STRUCTURE 19,20,21,22,23,24,25,26,27F, 19,20,21,22,23,24,25,26,27,28,29Ne, 20,21,22,23,24,25,26,27,28,29,30,31Na, 22,23,24,25,26,27,28,29,30,31Mg, 22,23,24,25,26,27,28,29,30,31,32Al, 23,24,25,26,27,28,29,30,31,32,33Si, 24,25,26,27,28,29,30,31,32,33,34P, 26,27,28,29,30,31,32,33,34,35S, 28,29,30,31,32,33,34,35,36Cl, 30,31,32,33,34,35,36,37Ar, 32,33,34,35,36,37K; calculated nuclear level density using the configuration-interaction nuclear shell model; deduced the parameters of the Constant Temperature phenomenological model.

doi: 10.1016/j.adt.2017.08.001
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2016SE04      Phys.Rev. C 93, 044334 (2016)

R.A.Sen'kov, M.Horoi

Shell-model calculation of neutrinoless double-β decay of 76Ge

RADIOACTIVITY 76Ge(2β-); calculated nuclear matrix elements (NMEs) for 0νββ decay mode using a realistic shell-model approach beyond the closure approximation with realistic jj44 model space and JUN45 effective Hamiltonian.

NUCLEAR STRUCTURE 76Ge, 76Se; calculated neutron occupancies of the p, f5/2 and g9/2 orbitals. 44,46,48Ca, 76Ge, 82Se; calculated optimal closure energies for GXPF1A, FPD6, and KB3G and JUN45 effective Hamiltonians. Comparison of occupation probabilities and Gamow-Teller strength with experimental data.

doi: 10.1103/PhysRevC.93.044334
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2014BR22      Phys.Rev.Lett. 113, 262501 (2014)

B.A.Brown, M.Horoi, R.A.Senkov

Nuclear Structure Aspects of Neutrinoless Double-β Decay

RADIOACTIVITY 76Ge, 48Ca, 82Se(2β-); calculated nuclear matrix elements as sums of products over the intermediate nucleus with two less nucleons; deduced the importance of the ground state of intermediate nucleus.

doi: 10.1103/PhysRevLett.113.262501
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2014KW04      Phys.Rev. C 89, 045502 (2014)

A.A.Kwiatkowski, T.Brunner, J.D.Holt, A.Chaudhuri, U.Chowdhury, M.Eibach, J.Engel, A.T.Gallant, A.Grossheim, M.Horoi, A.Lennarz, T.D.Macdonald, M.R.Pearson, B.E.Schultz, M.C.Simon, R.A.Senkov, V.V.Simon, K.Zuber, J.Dilling

New determination of double-β-decay properties on 48Ca High-precision Qββ-value measurement and improved nuclear matrix element calculations

ATOMIC MASSES 48Ca, 48Ti; measured cyclotron-frequencies, resonances using TITAN system consisting of radio frequency quadrupole (RFQ) beam cooler and buncher, an electron beam ion trap (EBIT), and a Penning trap (MPET) at ISAC-TRIUMF facility; deduced Q value for double β decay of 48Ti. Comparison with previous measurements and atomic mass evaluations (AME-2003 and AME-2012).

RADIOACTIVITY 48Ca(2β-); measured precise Q-value using TITAN system at ISAC-TRIUMF facility; calculated ββ nuclear matrix element by including effects of levels outside the valence space in a shell-model; discussed case for a new experiment on double-beta decay of 48Ca.

doi: 10.1103/PhysRevC.89.045502
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2014SE10      Phys.Rev. C 89, 054304 (2014)

R.A.Sen'kov, M.Horoi, B.A.Brown

Neutrinoless double-β decay of 82Se in the shell model: Beyond the closure approximation

RADIOACTIVITY 82Se(2β-); calculated nuclear matrix elements for neutrinoless double-beta decay (0νββ). Shell-model techniques using CD-Bonn-, Miller-Spencer-, and AV18-based short-range correlation (SRC) methods. Comparison with other theoretical calculations. Relevance to SuperNEMO experiment.

doi: 10.1103/PhysRevC.89.054304
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2014SE21      Phys.Rev. C 90, 051301 (2014)

R.A.Senkov, M.Horoi

Accurate shell-model nuclear matrix elements for neutrinoless double-β decay

RADIOACTIVITY 76Ge(2β-); calculated nuclear matrix elements (NMEs), and average closure energies for neutrinoless double-β decay using realistic shell-model approach beyond closure approximation. 44,46,48Ca, 76Ge, 82Ge(2β-); calculated optimal closure energies for GXPF1A, FPD6, and KB3G for Ca and JUN45 for Ge and Se isotopes.

doi: 10.1103/PhysRevC.90.051301
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2013SE22      Phys.Rev. C 88, 064312 (2013)

R.A.Sen'kov, M.Horoi

Neutrinoless doubleβ in the shell model: Closure versus nonclosure approximation

RADIOACTIVITY 48Ca(2β-); calculated the 0νββ nuclear matrix elements (NMEs) using closure approximation, a nonclosure approach, and a combined new method within shell model. 44,46Ca; calculated closure NME for fictitious 0νββ decay.

doi: 10.1103/PhysRevC.88.064312
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2010SE09      Phys.Rev. C 82, 024304 (2010)

R.A.Senkov, M.Horoi

High-performance algorithm to calculate spin- and parity-dependent nuclear level densities

NUCLEAR STRUCTURE 28Si, 52Fe, 52Cr, 60Zn, 64Ge, 68Se, 70Br; calculated spin and parity dependent shell model nuclear level density using moments method in the proton-neutron formalism. Comparisons with exact shell-model calculations. Calculations performed on FRANKLIN supercomputer.

doi: 10.1103/PhysRevC.82.024304
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2008SE09      Phys.Rev. C 78, 044304 (2008)

R.A.Senkov, G.F.Bertsch, B.A.Brown, Y.L.Luo, V.G.Zelevinsky

Many-body approximations in the sd-shell "sandbox"

NUCLEAR STRUCTURE A=16-40;Z=8-20; calculated ground-state energies, pairing correlation energies, intrinsic electric quadrupole moments using Hartree-Fock variational scheme and exact binding energy differences solution.

doi: 10.1103/PhysRevC.78.044304
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2007AU07      Phys.Atomic Nuclei 70, 1654 (2007)

N.Auerbach, V.F.Dmitriev, V.V.Flambaum, A.Lisetskiy, R.A.Senkov, V.G.Zelevinsky

Is it possible to enhance the nuclear Schiff moment by nuclear collective modes?

NUCLEAR MOMENTS 217,219,221Ra, 217,219,221Rn; calculated the nuclear Schiff moment using the QRPA formalism.

doi: 10.1134/S106377880709027X
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2006AU02      Phys.Rev. C 74, 025502 (2006)

N.Auerbach, V.F.Dmitriev, V.V.Flambaum, A.Lisetskiy, R.A.Sen'kov, V.G.Zelevinsky

Nuclear Schiff moment in nuclei with soft octupole and quadrupole vibrations

NUCLEAR STRUCTURE 217,219,221Ra; calculated Schiff moments, role of soft collective quadrupole and octupole vibrations. Quasiparticle RPA.

NUCLEAR MOMENTS 217,219,221Ra; calculated Schiff moments, role of soft collective quadrupole and octupole vibrations. Quasiparticle RPA.

doi: 10.1103/PhysRevC.74.025502
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2005DM01      Phys.Rev. C 71, 035501 (2005)

V.F.Dmitriev, R.A.Senkov, N.Auerbach

Effects of core polarization on the nuclear Schiff moment

NUCLEAR MOMENTS 129Xe, 133Cs, 199Hg, 211Rn, 213,225Ra, 223Fr; calculated Schiff moments, core polarization contributions.

NUCLEAR STRUCTURE 129Xe, 133Cs, 199Hg, 211Rn, 213,225Ra, 223Fr; calculated Schiff moments, core polarization contributions.

doi: 10.1103/PhysRevC.71.035501
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2004DM02      Yad.Fiz. 67, 1827 (2004); Phys.Atomic Nuclei 67, 1799 (2004)

V.F.Dmitriev, R.A.Sen'kov

Schiff Moment of the Mercury Nucleus and the Proton Dipole Moment

NUCLEAR MOMENTS 199Hg; calculated Schiff moment, core polarization effects, nucleon contributions. 1n, 1H deduced electric dipole moment upper limits.

doi: 10.1134/1.1811181
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2003DM01      Yad.Fiz. 66, 1988 (2003); Phys.Atomic Nuclei 66, 1940 (2003)

V.F.Dmitriev, R.A.Sen'kov

P- and T-Violating Schiff Moment of the Mercury Nucleus

NUCLEAR STRUCTURE 199Hg; calculated Schiff moment, core polarization effects. RPA approach, P- and T-violating interaction.

NUCLEAR MOMENTS 199Hg; calculated Schiff moment, core polarization effects. RPA approach, P- and T-violating interaction.

doi: 10.1134/1.1619505
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2003DM02      Phys.Rev.Lett. 91, 212303 (2003)

V.F.Dmitriev, R.A.Sen'kov

Schiff Moment of the Mercury Nucleus and the Proton Dipole Moment

NUCLEAR MOMENTS 199Hg; calculated nucleon dipole moment contributions to Schiff moment. 1H deduced electric dipole moment upper limit.

doi: 10.1103/PhysRevLett.91.212303
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2002SE04      Nucl.Phys. A706, 351 (2002)

R.A.Senkov, V.F.Dmitriev

Nuclear Magnetization Distribution and Hyperfine Splitting in Bi82+ Ion

NUCLEAR MOMENTS 207Pb, 209Bi; calculated hfs, core polarization effects for hydrogen-like ions.

doi: 10.1016/S0375-9474(02)00759-5
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Note: The following list of authors and aliases matches the search parameter R.A.Senkov: , R.A.SEN'KOV, R.A.SENKOV