Two-phonon J = 1 states in even-mass Te isotopes with A = 122-130

R. Schwengner; G. Winter; W. Schauer; M. Grinberg; F. Becker; P. Von Brentano; J. Eberth; J. Enders; T. Von Egidy; R. D. Herzberg; N. Huxel; L. Käubler; P. Von Neumann-Cosel; N. Nicolay; J. Ott; N. Pietralla; H. Prade; S. Raman; J. Reif; A. Richter; C. Schlegel; H. Schnare; T. Servene; S. Skoda; T. Steinhardt; C. Stoyanov; H. G. Thomas; I. Wiedenhöver; A. Zilges

doi:10.1016/S0375-9474(97)00169-3

Two-phonon J = 1 states in even-mass Te isotopes with A = 122-130

R. Schwengner, G. Winter, W. Schauer, M. Grinberg, F. Becker, P. Von Brentano, J. Eberth, J. Enders, T. Von Egidy, R. D. Herzberg, N. Huxel, L. Käubler, P. Von Neumann-Cosel, N. Nicolay, J. Ott, N. Pietralla, H. Prade, S. Raman, J. Reif, A. RichterC. Schlegel, H. Schnare, T. Servene, S. Skoda, T. Steinhardt, C. Stoyanov, H. G. Thomas, I. Wiedenhöver, A. Zilges

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Abstract

Excited states of the nuclei ^122,126,130Te were populated via the (γ,γ′) reaction at endpoint energies of the bremsstrahlung between 4.5 and 5.5 MeV. Gamma rays were detected with a EUROBALL CLUSTER detector and a single HPGe detector. In all investigated nuclei two or three prominent dipole transitions were identified at E_γ ≈ 3 MeV. The corresponding low-lying J = 1 states are interpreted as two-phonon excitations. Quasiparticle-phonon-model calculations predict at about 3 MeV one 1^- state arising from the coupling of the first quadrupole and the first octupole phonon, and one 1⁺ state arising from the coupling of the first and the second quadrupole phonon, where the latter has isovector character. Such an excitation mode can be considered as an analogue of the scissors mode in vibrational nuclei. The calculated transition strengths are compatible with experimental ones within a factor of about 1.5.

Original language	English
Pages (from-to)	277-295
Number of pages	19
Journal	Nuclear Physics, Section A
Volume	620
Issue number	3
DOIs	https://doi.org/10.1016/S0375-9474(97)00169-3
State	Published - 14 Jul 1997

Keywords

E = 4.5 MeV, Te(γ,γ′)
E = 4.5 MeV, Te(γ,γ′)
Nuclear reactions Te(γ,γ′)

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10.1016/S0375-9474(97)00169-3

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Schwengner, R., Winter, G., Schauer, W., Grinberg, M., Becker, F., Von Brentano, P., Eberth, J., Enders, J., Von Egidy, T., Herzberg, R. D., Huxel, N., Käubler, L., Von Neumann-Cosel, P., Nicolay, N., Ott, J., Pietralla, N., Prade, H., Raman, S., Reif, J., ... Zilges, A. (1997). Two-phonon J = 1 states in even-mass Te isotopes with A = 122-130. Nuclear Physics, Section A, 620(3), 277-295. https://doi.org/10.1016/S0375-9474(97)00169-3

@article{0c9d5a27d1204450bb24f63c52bc27e6,

title = "Two-phonon J = 1 states in even-mass Te isotopes with A = 122-130",

abstract = "Excited states of the nuclei 122,126,130Te were populated via the (γ,γ′) reaction at endpoint energies of the bremsstrahlung between 4.5 and 5.5 MeV. Gamma rays were detected with a EUROBALL CLUSTER detector and a single HPGe detector. In all investigated nuclei two or three prominent dipole transitions were identified at Eγ ≈ 3 MeV. The corresponding low-lying J = 1 states are interpreted as two-phonon excitations. Quasiparticle-phonon-model calculations predict at about 3 MeV one 1- state arising from the coupling of the first quadrupole and the first octupole phonon, and one 1+ state arising from the coupling of the first and the second quadrupole phonon, where the latter has isovector character. Such an excitation mode can be considered as an analogue of the scissors mode in vibrational nuclei. The calculated transition strengths are compatible with experimental ones within a factor of about 1.5.",

keywords = "E = 4.5 MeV, Te(γ,γ′), E = 4.5 MeV, Te(γ,γ′), Nuclear reactions Te(γ,γ′)",

author = "R. Schwengner and G. Winter and W. Schauer and M. Grinberg and F. Becker and {Von Brentano}, P. and J. Eberth and J. Enders and {Von Egidy}, T. and Herzberg, {R. D.} and N. Huxel and L. K{\"a}ubler and {Von Neumann-Cosel}, P. and N. Nicolay and J. Ott and N. Pietralla and H. Prade and S. Raman and J. Reif and A. Richter and C. Schlegel and H. Schnare and T. Servene and S. Skoda and T. Steinhardt and C. Stoyanov and Thomas, {H. G.} and I. Wiedenh{\"o}ver and A. Zilges",

note = "Funding Information: * Supported by the Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologic (BMBF) under contracts 06DA665I, 06DR666I and 06OK668, by the Deutsche Forschungsgemeinschaft under contract Eg 25/3 and by the Bulgarian National Science Foundation under contract PH431. l Deceased. 2 Oak Ridge National Laboratory is operated by Lockheed Martin Energy Research Corporation for the US Department of Energy.",

year = "1997",

month = jul,

day = "14",

doi = "10.1016/S0375-9474(97)00169-3",

language = "English",

volume = "620",

pages = "277--295",

journal = "Nuclear Physics, Section A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "3",

}

Schwengner, R, Winter, G, Schauer, W, Grinberg, M, Becker, F, Von Brentano, P, Eberth, J, Enders, J, Von Egidy, T, Herzberg, RD, Huxel, N, Käubler, L, Von Neumann-Cosel, P, Nicolay, N, Ott, J, Pietralla, N, Prade, H, Raman, S, Reif, J, Richter, A, Schlegel, C, Schnare, H, Servene, T, Skoda, S, Steinhardt, T, Stoyanov, C, Thomas, HG, Wiedenhöver, I & Zilges, A 1997, 'Two-phonon J = 1 states in even-mass Te isotopes with A = 122-130', Nuclear Physics, Section A, vol. 620, no. 3, pp. 277-295. https://doi.org/10.1016/S0375-9474(97)00169-3

TY - JOUR

T1 - Two-phonon J = 1 states in even-mass Te isotopes with A = 122-130

AU - Schwengner, R.

AU - Winter, G.

AU - Schauer, W.

AU - Grinberg, M.

AU - Becker, F.

AU - Von Brentano, P.

AU - Eberth, J.

AU - Enders, J.

AU - Von Egidy, T.

AU - Herzberg, R. D.

AU - Huxel, N.

AU - Käubler, L.

AU - Von Neumann-Cosel, P.

AU - Nicolay, N.

AU - Ott, J.

AU - Pietralla, N.

AU - Prade, H.

AU - Raman, S.

AU - Reif, J.

AU - Richter, A.

AU - Schlegel, C.

AU - Schnare, H.

AU - Servene, T.

AU - Skoda, S.

AU - Steinhardt, T.

AU - Stoyanov, C.

AU - Thomas, H. G.

AU - Wiedenhöver, I.

AU - Zilges, A.

N1 - Funding Information: * Supported by the Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologic (BMBF) under contracts 06DA665I, 06DR666I and 06OK668, by the Deutsche Forschungsgemeinschaft under contract Eg 25/3 and by the Bulgarian National Science Foundation under contract PH431. l Deceased. 2 Oak Ridge National Laboratory is operated by Lockheed Martin Energy Research Corporation for the US Department of Energy.

PY - 1997/7/14

Y1 - 1997/7/14

N2 - Excited states of the nuclei 122,126,130Te were populated via the (γ,γ′) reaction at endpoint energies of the bremsstrahlung between 4.5 and 5.5 MeV. Gamma rays were detected with a EUROBALL CLUSTER detector and a single HPGe detector. In all investigated nuclei two or three prominent dipole transitions were identified at Eγ ≈ 3 MeV. The corresponding low-lying J = 1 states are interpreted as two-phonon excitations. Quasiparticle-phonon-model calculations predict at about 3 MeV one 1- state arising from the coupling of the first quadrupole and the first octupole phonon, and one 1+ state arising from the coupling of the first and the second quadrupole phonon, where the latter has isovector character. Such an excitation mode can be considered as an analogue of the scissors mode in vibrational nuclei. The calculated transition strengths are compatible with experimental ones within a factor of about 1.5.

AB - Excited states of the nuclei 122,126,130Te were populated via the (γ,γ′) reaction at endpoint energies of the bremsstrahlung between 4.5 and 5.5 MeV. Gamma rays were detected with a EUROBALL CLUSTER detector and a single HPGe detector. In all investigated nuclei two or three prominent dipole transitions were identified at Eγ ≈ 3 MeV. The corresponding low-lying J = 1 states are interpreted as two-phonon excitations. Quasiparticle-phonon-model calculations predict at about 3 MeV one 1- state arising from the coupling of the first quadrupole and the first octupole phonon, and one 1+ state arising from the coupling of the first and the second quadrupole phonon, where the latter has isovector character. Such an excitation mode can be considered as an analogue of the scissors mode in vibrational nuclei. The calculated transition strengths are compatible with experimental ones within a factor of about 1.5.

KW - E = 4.5 MeV, Te(γ,γ′)

KW - Nuclear reactions Te(γ,γ′)

UR - http://www.scopus.com/inward/record.url?scp=0031567568&partnerID=8YFLogxK

U2 - 10.1016/S0375-9474(97)00169-3

DO - 10.1016/S0375-9474(97)00169-3

M3 - Article

AN - SCOPUS:0031567568

SN - 0375-9474

VL - 620

SP - 277

EP - 295

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 3

ER -

Two-phonon J = 1 states in even-mass Te isotopes with A = 122-130

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