Dipole excitations in 122Te, 126Te and 130Te
Dipole excitations in 122Te, 126Te and 130Te
Schwengner, R.; Schauer, W.; Winter, G.; von Brentano, P.; Eberth, J.; Enders, J.; von Egidy, T.; Grinberg, M.; Herzberg, R.-D.; 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.; Stoyanov, C.; Thomas, H. G.; Wiedenhöver, I.; Zilges, A.
Excited states of the nuclei 122Te, 126Te and 130Te
were populated via the (gamma,gamma') 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 detector. In all nuclei several
dipole transitions were identified at energies around 3 MeV. The lowest
corresponding J = 1 states are interpreted as two-phonon excitations. Quasiparticle-phonon-model
calculations predict 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 isovector second quadrupole
phonon at about 3 MeV. The calculated transition strengths are compatible
with experimental one.
- Zeitschrift für Physik A 358, H.2, 197-198 (1997)
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