NSR Query Results

Output year order : Descending
Format : Normal

NSR database version of April 29, 2024.

Search: Author = D.Petrellis

Found 16 matches.

Back to query form

2023BY03      Phys.Rev. C 108, 024615 (2023)

P.Bydzovsky, D.Denisova, D.Petrellis, D.Skoupil, P.Vesely, G.De Gregorio, F.Knapp, N.Lo Iudice

Self-consistent many-body approach to the electroproduction of hypernuclei

NUCLEAR REACTIONS ¹²C(e, eK⁺)¹²B, ¹⁶O(e, eK⁺)¹⁶N, ⁴⁰Ca(e, eK⁺)⁴⁰K, ⁴⁸Ca(e, eK⁺)⁴⁸K, E^*<31 MeV; calculated differential σ(θ) for hypernuclei electroproduction, excitation spectrum, σ of electroproduction for selected hypernucleus states. Microscopic self-consistent many-body mean field approach, known as Tamm-Dancoff for hypernuclei extended by equation of motion phonon method (EMPM). Comparison to available experimental data and empirical shell-model calculations. Relevance to the preparation of planned E12-15-008 experiment at JLab.

NUCLEAR STRUCTURE ¹²B, ¹⁶N, ²⁸Al, ⁴⁰K, ⁴⁸K; calculated Λ binding energy for hypernuclei. ⁴⁰K, ⁴⁸K; calculated levels of hypernuclei, J, π, proton and Λ single particle states. Tamm-Dancoff formalism with the NF YNG interaction and elementary amplitudes - SLA and BS3.

doi: 10.1103/PhysRevC.108.024615
Citations: PlumX Metrics

2023PE07      Phys.Rev. C 107, 045206 (2023)

D.Petrellis, D.Skoupil

Ridge regression for minimizing the couplings of hyperon resonances in k⁺Λ photoproduction

NUCLEAR REACTIONS ¹H(polarized γ, K⁺Λ), E=1.7-2.2 GeV; calculated photon-beam asymmetry, double-polarization asymmetry, target asymmetry. Isobar model with the amplitude constructed from effective meson-baryon Lagrangians. Comparison to data obtained in CLAS experiment.

doi: 10.1103/PhysRevC.107.045206
Citations: PlumX Metrics

2021BY03      Phys.Rev. C 104, 065202 (2021)

P.Bydzovsky, A.Cieply, D.Petrellis, D.Skoupil, N.Zachariou

Model selection for K⁺ Σ^- photoproduction within an isobar model

NUCLEAR REACTIONS ¹n(polarized γ, K⁺Σ^-), E=1150, 1350, 1150, 1750, 1950, 2150, 2350, 2550 MeV, [neutrons from ²H target]; analyzed experimental data from LEPS ad CLAS collaborations for differential cross section σ(Eγ, θ(K⁺)) as a functions of kaon center-of-mass angle, and incident photon energy, photon beam asymmetries as functions of kaon center-of-mass angle and incident photon energy. Isobar model for investigation of K⁺Σ^- photoproduction off a neutron in the resonance region, with free parameters of the model fitted to experimental data from LEPS and CLAS Collaborations, and including masses and widths of resonances taken from Particle Data Group (PDG) Breit-Wigner evaluations.

doi: 10.1103/PhysRevC.104.065202
Citations: PlumX Metrics

2015BO05      Phys.Rev. C 91, 054315 (2015)

D.Bonatsos, A.Martinou, N.Minkov, S.Karampagia, D.Petrellis

Octupole deformation in light actinides within an analytic quadrupole octupole axially symmetric model with a Davidson potential

NUCLEAR STRUCTURE ^222,224,226Ra, ^224,226Th; calculated levels, J, π, B(E1), BE(2), B(E3). Analytic quadrupole octupole axially (AQOA) symmetric model using Davidson potential. Bohr collective Hamiltonian, and quadrupole plus octupole deformation. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.054315
Citations: PlumX Metrics

2015BO10      J.Phys.(London) G42, 095104 (2015)

D.Bonatsos, N.Minkov, D.Petrellis

Bohr Hamiltonian with a deformation-dependent mass term: physical meaning of the free parameter

doi: 10.1088/0954-3899/42/9/095104
Citations: PlumX Metrics

2015CA17      J.Phys.(London) G42, 095102 (2015)

M.Capak, D.Petrellis, B.Gonul, D.Bonatsos

Analytical solutions for the Bohr Hamiltonian with the Woods-Saxon potential

NUCLEAR STRUCTURE ¹⁵⁰Nd, ^152,154Sm, ^154,156,158Gd, ^156,158,160Dy, ^160,162,164Er, ^{162,164,166,168,170,172,174,176}Yb, ^{166,168,170,172,174,176,178}Hf, ^176,178,180W, ^{176,178,180,182,184}Os, ²²⁸Ra, ^228,230,232Th, ^{232,234,236,238}U, ^240,242Pu, ²⁴⁸Cm, ^160,162Gd, ^162,164,166Dy, ^166,168Er, ¹⁷⁸Yb, ¹⁸⁰Hf, ^182,184,186W, ^186,188Os, ²³⁸Pu, ^{118,120,122,124,126,128,130,132,134}Xe; calculated nuclear potential parameters. Comparison with available data.

doi: 10.1088/0954-3899/42/9/095102
Citations: PlumX Metrics

2013BO24      Phys.Rev. C 88, 034316 (2013)

D.Bonatsos, P.E.Georgoudis, N.Minkov, D.Petrellis, C.Quesne

Bohr Hamiltonian with a deformation-dependent mass term for the Kratzer potential

NUCLEAR STRUCTURE ^{98,100,102,104}Ru, ^{102,104,106,108,110,112,114,116}Pd, ^{106,108,110,112,114,116,118,120}Cd, ^{118,120,122,124,126,128,130,132,134}Xe, ^{130,132,134,136,142}Ba, ^134,136,138Ce, ^140,148,150Nd, ^{140,142,152,154}Sm, ^{142,144,152,154,156,158,160,162}Gd, ^{154,156,158,160,162,164,166}Dy, ^{156,160,162,164,166,168,170}Er, ^{162,164,166,168,170,172,174,176,178}Yb, ^{166,168,170,172,174,176,178,180}Hf, ^{176,178,180,182,184,186}W, ^{176,178,180,184,186,188,190}Os, ^{186,188,190,192,194,196,198,200}Pt, ²²⁸Ra, ^228,230,232Th, ^{232,234,236,238}U, ^238,240,242Pu, ²⁴⁸Cm, ²⁵⁰Cf; calculated levels, J, π, ground, β and γ bands, B(E2), ratios of level energies of yrast bands and low-lying positive-parity levels. Deformation-dependent mass (DDM) Bohr Hamiltonian with Kratzer potential obtained for γ-unstable, axially symmetric prolate deformed, and triaxial nuclei. Techniques of supersymmetric quantum mechanics (SUSYQM).

doi: 10.1103/PhysRevC.88.034316
Citations: PlumX Metrics

2007BO45      Rom.J.Phys. 52, 779 (2007)

D.Bonatsos, D.Lenis, D.Petrellis, P.A.Terziev, I.Yigitoglu

γ-Rigid Solution of the Bohr Hamiltonian for γ=30 degrees Compared to the E(5) Critical Point Symmetry

NUCLEAR STRUCTURE ^128,130,132Xe; calculated level energies and B(E2) using the Z(4) model.

2007BO46      Phys.Rev. C 76, 064312 (2007)

D.Bonatsos, E.A.McCutchan, N.Minkov, R.F.Casten, P.Yotov, D.Lenis, D.Petrellis, I.Yigitoglu

Exactly separable version of the Bohr Hamiltonian with the Davidson potential

NUCLEAR STRUCTURE ¹⁵⁴Sm, ^{156,158,160,162}Gd, ^{158,160,162,164,166}Dy, ^{160,162,164,166,168,170}Er, ^{164,166,168,170,172,174,176,178}Yb, ^{168,170,172,174,176,178,180}Hf, ^{176,178,180,182,184,186}W, ^{180,182,184,186,188}Os, ²²⁸Ra, ^228,230,232Th, ^{232,234,236,238}U, ^238,240,242Pu, ²⁴⁸Cm, ²⁵⁰Cf; calculated excitation energy ratios, angular momenta, B(E2) ratios, bandhead energies, deformation parameters using Bohr Hamiltonian with Davidson Potential, compared with experimental values.

doi: 10.1103/PhysRevC.76.064312
Citations: PlumX Metrics

2006BO02      Phys.Lett. B 632, 238 (2006)

D.Bonatsos, D.Lenis, D.Petrellis, P.A.Terziev, I.Yigitoglu

X(3): an exactly separable γ-rigid version of the X(5) critical point symmetry

NUCLEAR STRUCTURE ¹⁸⁶Pt, ¹⁷²Os, ¹⁵⁶Dy, ¹⁵⁴Gd, ¹⁵²Sm, ¹⁵⁰Nd; calculated ground and vibrational bands level energies, B(E2), critical point symmetry, shape transition features. Analytic quadrupole octupole axially symmetric model, comparison with data.

doi: 10.1016/j.physletb.2005.10.060
Citations: PlumX Metrics

2006MI11      Phys.Rev. C 73, 044315 (2006)

N.Minkov, P.Yotov, S.Drenska, W.Scheid, D.Bonatsos, D.Lenis, D.Petrellis

Nuclear collective motion with a coherent coupling interaction between quadrupole and octupole modes

NUCLEAR STRUCTURE ¹⁵⁰Nd, ¹⁵²Sm, ¹⁵⁴Gd, ¹⁵⁶Dy; calculated energy vs spin, transition probabilities for alternating-parity rotational bands, coupling of quadrupole and octupole degrees of freedom.

doi: 10.1103/PhysRevC.73.044315
Citations: PlumX Metrics

2005BO18      Phys.Rev. C 71, 064309 (2005)

D.Bonatsos, D.Lenis, N.Minkov, D.Petrellis, P.Yotov

Analytic description of critical-point actinides in a transition from octupole deformation to octupole vibrations

NUCLEAR STRUCTURE ^{220,222,224,226,228,230,232,234}Th, ^{218,220,222,224,226,228,230}Ra; calculated ground and vibrational bands level energies, B(E1), B(E2), critical point symmetry, shape transition features.Analytic quadrupole octupole axially symmetric model, comparison with data.

doi: 10.1103/PhysRevC.71.064309
Citations: PlumX Metrics

2005BO30      Phys.Lett. B 621, 102 (2005)

D.Bonatsos, D.Lenis, D.Petrellis, P.A.Terziev, I.Yigitoglu

γ-rigid solution of the Bohr Hamiltonian for γ = 30 degrees compared to the E(5) critical point symmetry

NUCLEAR STRUCTURE ^128,130,132Xe; analyzed levels, J, π, B(E2); deduced symmetry features.

doi: 10.1016/j.physletb.2005.06.047
Citations: PlumX Metrics

2004BO15      Phys.Lett. B 588, 172 (2004)

D.Bonatsos, D.Lenis, D.Petrellis, P.A.Terziev

Z(5): critical point symmetry for the prolate to oblate nuclear shape phase transition

NUCLEAR STRUCTURE ^192,194,196Pt; analyzed transitions B(E2); critical point symmetry, shape transition features.

doi: 10.1016/j.physletb.2004.03.029
Citations: PlumX Metrics

2004BO19      Phys.Lett. B 584, 40 (2004)

D.Bonatsos, D.Lenis, N.Minkov, D.Petrellis, P.P.Raychev, P.A.Terziev

Ground state bands of the E(5) and X(5) critical symmetries obtained from Davidson potentials through a variational procedure

doi: 10.1016/j.physletb.2004.01.018
Citations: PlumX Metrics

2004BO33      Phys.Rev. C 70, 024305 (2004)

D.Bonatsos, D.Lenis, N.Minkov, D.Petrellis, P.P.Raychev, P.A.Terziev

E(5) and X(5) critical point symmetries obtained from Davidson potentials through a variational procedure

doi: 10.1103/PhysRevC.70.024305
Citations: PlumX Metrics