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NSR database version of April 27, 2024.

Search: Author = D.Lenis

Found 17 matches.

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2012BO22      J.Phys.:Conf.Ser. 366, 012017 (2012)

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

Fixing the moment of inertia in the Bohr Hamiltonian through Supersymmetric Quantum Mechanics

NUCLEAR STRUCTURE ¹⁶²Dy, ²³⁸U; calculated energy levels, J of gs band, deformation of states using Bohr-Mottelson model. Compared with data.

doi: 10.1088/1742-6596/366/1/012017
Citations: PlumX Metrics

2011BO12      Phys.Rev. C 83, 044321 (2011)

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

Bohr Hamiltonian with a deformation-dependent mass term for the Davidson 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, B(E2). Bohr collective Hamiltonian, β₂ deformation dependent mass, curved space, Davidson potential. Comparison with experimental data.

doi: 10.1103/PhysRevC.83.044321
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

2006BO24      Phys.Rev. C 74, 044306 (2006)

D.Bonatsos, D.Lenis, N.Pietralla, P.A.Terziev

γ-soft analog of the confined β-soft rotor model

NUCLEAR STRUCTURE ^128,130Xe; calculated levels, J, π, B(E2), symmetry features. γ-soft analog of the confined β-soft rotor model.

doi: 10.1103/PhysRevC.74.044306
Citations: PlumX Metrics

2006LE09      Phys.Lett. B 633, 474 (2006)

D.Lenis, D.Bonatsos

Parameter-free solution of the Bohr Hamiltonian for actinides critical in the octupole mode

NUCLEAR STRUCTURE ^{218,220,222,224,226,228}Ra, ^{220,222,224,226,228,230,232,234}Th; calculated ground and vibrational bands level energies, B(E1), B(E2), B(E3), critical point symmetry, shape transition features. Analytic quadrupole octupole axially symmetric model, comparison with data.

doi: 10.1016/j.physletb.2005.12.016
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

2004BO02      Phys.Rev. C 69, 014302 (2004)

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

Sequence of potentials lying between the U(5) and X(5) symmetries

NUCLEAR STRUCTURE ¹⁴⁸Nd, ¹⁶⁰Yb, ¹⁵⁸Er; calculated ground and vibrational bands level energies, J, π, B(E2). Harmonic oscillator, X(5) symmetries.

doi: 10.1103/PhysRevC.69.014302
Citations: PlumX Metrics

2004BO14      Phys.Rev. C 69, 044316 (2004)

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

Sequence of potentials interpolating between the U(5) and E(5) symmetries

NUCLEAR STRUCTURE ¹⁰⁰Pd, ⁹⁸Ru; calculated levels, J, π, B(E2). Bohr collective Hamiltonian, extensions of E(5) model.

doi: 10.1103/PhysRevC.69.044316
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

2004BO38      Yad.Fiz. 67, 1795 (2004); Phys.Atomic Nuclei 67, 1767 (2004)

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

Extended E(5) and X(5) Symmetries: Series of Models Providing Parameter-Independent Predictions

doi: 10.1134/1.1811176
Citations: PlumX Metrics

1996BO31      Roum.J.Phys. 41, 109 (1996)

D.Bonatsos, C.Daskaloyannis, P.Kolokotronis, D.Lenis

Quantum Algebras in Nuclear Structure