Isospin Character of the Pygmy Dipole Resonance in Sn-124

J. Endres; E. Litvinova; D. Savran; P. A. Butler; M. N. Harakeh; S. Harissopulos; R. -D. Herzberg; R. Kruecken; A. Lagoyannis; N. Pietralla; V. Yu Ponomarev; L. Popescu; P. Ring; M. Scheck; K. Sonnabend; V. I. Stoica; H. J. Wortche; A. Zilges

doi:10.1103/PhysRevLett.105.212503

Isospin Character of the Pygmy Dipole Resonance in Sn-124

J. Endres, E. Litvinova, D. Savran, P. A. Butler, M. N. Harakeh, S. Harissopulos, R. -D. Herzberg, R. Kruecken, A. Lagoyannis, N. Pietralla, V. Yu Ponomarev, L. Popescu, P. Ring, M. Scheck, K. Sonnabend, V. I. Stoica, H. J. Wortche, A. Zilges

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

165 Citations (Scopus)

Abstract

The pygmy dipole resonance has been studied in the proton-magic nucleus Sn-124 with the (alpha, alpha'gamma) coincidence method at E-alpha = 136 MeV. The comparison with results of photon-scattering experiments reveals a splitting into two components with different structure: one group of states which is excited in (alpha, alpha'gamma) as well as in (gamma, gamma') reactions and a group of states at higher energies which is only excited in (gamma, gamma') reactions. Calculations with the self-consistent relativistic quasiparticle time-blocking approximation and the quasiparticle phonon model are in qualitative agreement with the experimental results and predict a low-lying isoscalar component dominated by neutron-skin oscillations and a higher-lying more isovector component on the tail of the giant dipole resonance.

Original language	English
Article number	212503
Journal	Physical Review Letters
Volume	105
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.105.212503
Publication status	Published - 19 Nov 2010
Externally published	Yes

Access to Document

10.1103/PhysRevLett.105.212503Licence: Unspecified

Cite this

Endres, J., Litvinova, E., Savran, D., Butler, P. A., Harakeh, M. N., Harissopulos, S., Herzberg, R. .-D., Kruecken, R., Lagoyannis, A., Pietralla, N., Ponomarev, V. Y., Popescu, L., Ring, P., Scheck, M., Sonnabend, K., Stoica, V. I., Wortche, H. J., & Zilges, A. (2010). Isospin Character of the Pygmy Dipole Resonance in Sn-124. Physical Review Letters, 105(21), Article 212503. https://doi.org/10.1103/PhysRevLett.105.212503

@article{2aaf1af4ac49443ca60e9553bf58777e,

title = "Isospin Character of the Pygmy Dipole Resonance in Sn-124",

abstract = "The pygmy dipole resonance has been studied in the proton-magic nucleus Sn-124 with the (alpha, alpha'gamma) coincidence method at E-alpha = 136 MeV. The comparison with results of photon-scattering experiments reveals a splitting into two components with different structure: one group of states which is excited in (alpha, alpha'gamma) as well as in (gamma, gamma') reactions and a group of states at higher energies which is only excited in (gamma, gamma') reactions. Calculations with the self-consistent relativistic quasiparticle time-blocking approximation and the quasiparticle phonon model are in qualitative agreement with the experimental results and predict a low-lying isoscalar component dominated by neutron-skin oscillations and a higher-lying more isovector component on the tail of the giant dipole resonance.",

author = "J. Endres and E. Litvinova and D. Savran and Butler, {P. A.} and Harakeh, {M. N.} and S. Harissopulos and Herzberg, {R. -D.} and R. Kruecken and A. Lagoyannis and N. Pietralla and Ponomarev, {V. Yu} and L. Popescu and P. Ring and M. Scheck and K. Sonnabend and Stoica, {V. I.} and Wortche, {H. J.} and A. Zilges",

year = "2010",

month = nov,

day = "19",

doi = "10.1103/PhysRevLett.105.212503",

language = "English",

volume = "105",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

}

Endres, J, Litvinova, E, Savran, D, Butler, PA, Harakeh, MN, Harissopulos, S, Herzberg, R-D, Kruecken, R, Lagoyannis, A, Pietralla, N, Ponomarev, VY, Popescu, L, Ring, P, Scheck, M, Sonnabend, K, Stoica, VI, Wortche, HJ & Zilges, A 2010, 'Isospin Character of the Pygmy Dipole Resonance in Sn-124', Physical Review Letters, vol. 105, no. 21, 212503. https://doi.org/10.1103/PhysRevLett.105.212503

TY - JOUR

T1 - Isospin Character of the Pygmy Dipole Resonance in Sn-124

AU - Endres, J.

AU - Litvinova, E.

AU - Savran, D.

AU - Butler, P. A.

AU - Harakeh, M. N.

AU - Harissopulos, S.

AU - Herzberg, R. -D.

AU - Kruecken, R.

AU - Lagoyannis, A.

AU - Pietralla, N.

AU - Ponomarev, V. Yu

AU - Popescu, L.

AU - Ring, P.

AU - Scheck, M.

AU - Sonnabend, K.

AU - Stoica, V. I.

AU - Wortche, H. J.

AU - Zilges, A.

PY - 2010/11/19

Y1 - 2010/11/19

N2 - The pygmy dipole resonance has been studied in the proton-magic nucleus Sn-124 with the (alpha, alpha'gamma) coincidence method at E-alpha = 136 MeV. The comparison with results of photon-scattering experiments reveals a splitting into two components with different structure: one group of states which is excited in (alpha, alpha'gamma) as well as in (gamma, gamma') reactions and a group of states at higher energies which is only excited in (gamma, gamma') reactions. Calculations with the self-consistent relativistic quasiparticle time-blocking approximation and the quasiparticle phonon model are in qualitative agreement with the experimental results and predict a low-lying isoscalar component dominated by neutron-skin oscillations and a higher-lying more isovector component on the tail of the giant dipole resonance.

AB - The pygmy dipole resonance has been studied in the proton-magic nucleus Sn-124 with the (alpha, alpha'gamma) coincidence method at E-alpha = 136 MeV. The comparison with results of photon-scattering experiments reveals a splitting into two components with different structure: one group of states which is excited in (alpha, alpha'gamma) as well as in (gamma, gamma') reactions and a group of states at higher energies which is only excited in (gamma, gamma') reactions. Calculations with the self-consistent relativistic quasiparticle time-blocking approximation and the quasiparticle phonon model are in qualitative agreement with the experimental results and predict a low-lying isoscalar component dominated by neutron-skin oscillations and a higher-lying more isovector component on the tail of the giant dipole resonance.

U2 - 10.1103/PhysRevLett.105.212503

DO - 10.1103/PhysRevLett.105.212503

M3 - Article

SN - 0031-9007

VL - 105

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 212503

ER -

Isospin Character of the Pygmy Dipole Resonance in Sn-124

Abstract

Access to Document

Fingerprint

Cite this