Description of the giant monopole resonance in the even-A Sn112-124 isotopes within a microscopic model including quasiparticle-phonon coupling

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Description of the giant monopole resonance in the even-A Sn112-124 isotopes within a microscopic model including quasiparticle-phonon coupling. / Tselyaev, V.; Speth, J.; Krewald, S.; Litvinova, E.; Kamerdzhiev, S.; Lyutorovich, N.; Avdeenkov, A.; Grümmer, F.

In: Physical Review C, Vol. 79, No. 3, 034309, 03.03.2009.

Research output: Contribution to journal › Article › peer-review

Author

Tselyaev, V. ; Speth, J. ; Krewald, S. ; Litvinova, E. ; Kamerdzhiev, S. ; Lyutorovich, N. ; Avdeenkov, A. ; Grümmer, F. / Description of the giant monopole resonance in the even-A Sn112-124 isotopes within a microscopic model including quasiparticle-phonon coupling. In: Physical Review C. 2009 ; Vol. 79, No. 3.

BibTeX

@article{3574a4b554814657b8d0a2f637379af9,

title = "Description of the giant monopole resonance in the even-A Sn112-124 isotopes within a microscopic model including quasiparticle-phonon coupling",

abstract = "We have calculated the strength distributions of the isoscalar giant monopole resonance (ISGMR) in the even-A tin isotopes (A=112-124) that were recently measured in inelastic α scattering. The calculations were performed within two microscopic models: the quasiparticle random phase approximation (QRPA) and the quasiparticle time blocking approximation (QTBA), which is an extension of the QRPA including quasiparticle-phonon coupling. We used a self-consistent calculational scheme based on the Hartree-Fock+Bardeen- Cooper-Schrieffer approximation. Within the RPA the self-consistency is full. The single-particle continuum is also exactly included at the RPA level. The self-consistent mean field and the effective interaction are derived from the Skyrme energy functional. In the calculations, two Skyrme force parametrizations were used: T5 with a comparatively low value of the incompressibility modulus of infinite nuclear matter (K =202 MeV) and T6 with K =236 MeV. The T5 parametrization gives theoretical results for tin isotopes in good agreement with the experimental data including the resonance widths. The results of the ISGMR calculations in Zr90, Sm144, and Pb208 performed with these Skyrme forces are discussed and compared with the experiment.",

keywords = "NUCLEAR-MATTER, BREATHING-MODE, INCOMPRESSIBILITY, COMPRESSIBILITY, VIBRATIONS, CONTINUUM, PB-208, FORCE",

author = "V. Tselyaev and J. Speth and S. Krewald and E. Litvinova and S. Kamerdzhiev and N. Lyutorovich and A. Avdeenkov and F. Gr{\"u}mmer",

year = "2009",

month = mar,

day = "3",

doi = "10.1103/PhysRevC.79.034309",

language = "English",

volume = "79",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "3",

}

RIS

TY - JOUR

T1 - Description of the giant monopole resonance in the even-A Sn112-124 isotopes within a microscopic model including quasiparticle-phonon coupling

AU - Tselyaev, V.

AU - Speth, J.

AU - Krewald, S.

AU - Litvinova, E.

AU - Kamerdzhiev, S.

AU - Lyutorovich, N.

AU - Avdeenkov, A.

AU - Grümmer, F.

PY - 2009/3/3

Y1 - 2009/3/3

N2 - We have calculated the strength distributions of the isoscalar giant monopole resonance (ISGMR) in the even-A tin isotopes (A=112-124) that were recently measured in inelastic α scattering. The calculations were performed within two microscopic models: the quasiparticle random phase approximation (QRPA) and the quasiparticle time blocking approximation (QTBA), which is an extension of the QRPA including quasiparticle-phonon coupling. We used a self-consistent calculational scheme based on the Hartree-Fock+Bardeen- Cooper-Schrieffer approximation. Within the RPA the self-consistency is full. The single-particle continuum is also exactly included at the RPA level. The self-consistent mean field and the effective interaction are derived from the Skyrme energy functional. In the calculations, two Skyrme force parametrizations were used: T5 with a comparatively low value of the incompressibility modulus of infinite nuclear matter (K =202 MeV) and T6 with K =236 MeV. The T5 parametrization gives theoretical results for tin isotopes in good agreement with the experimental data including the resonance widths. The results of the ISGMR calculations in Zr90, Sm144, and Pb208 performed with these Skyrme forces are discussed and compared with the experiment.

AB - We have calculated the strength distributions of the isoscalar giant monopole resonance (ISGMR) in the even-A tin isotopes (A=112-124) that were recently measured in inelastic α scattering. The calculations were performed within two microscopic models: the quasiparticle random phase approximation (QRPA) and the quasiparticle time blocking approximation (QTBA), which is an extension of the QRPA including quasiparticle-phonon coupling. We used a self-consistent calculational scheme based on the Hartree-Fock+Bardeen- Cooper-Schrieffer approximation. Within the RPA the self-consistency is full. The single-particle continuum is also exactly included at the RPA level. The self-consistent mean field and the effective interaction are derived from the Skyrme energy functional. In the calculations, two Skyrme force parametrizations were used: T5 with a comparatively low value of the incompressibility modulus of infinite nuclear matter (K =202 MeV) and T6 with K =236 MeV. The T5 parametrization gives theoretical results for tin isotopes in good agreement with the experimental data including the resonance widths. The results of the ISGMR calculations in Zr90, Sm144, and Pb208 performed with these Skyrme forces are discussed and compared with the experiment.

KW - NUCLEAR-MATTER

KW - BREATHING-MODE

KW - INCOMPRESSIBILITY

KW - COMPRESSIBILITY

KW - VIBRATIONS

KW - CONTINUUM

KW - PB-208

KW - FORCE

UR - http://www.scopus.com/inward/record.url?scp=63149158624&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.79.034309

DO - 10.1103/PhysRevC.79.034309

M3 - Article

VL - 79

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 3

M1 - 034309

ER -

ID: 74234449