Author/Authors :
J. Enders، نويسنده , , P. von Brentano، نويسنده , , J. Eberth، نويسنده , , A. Fitzler، نويسنده , , C. Fransen، نويسنده , , R.-D. Herzberg، نويسنده , , Donna H. Kaiser، نويسنده , , L. K?ubler، نويسنده , , P. von Neuman-Cosel، نويسنده , , N. Pietralla، نويسنده , , V.Yu. Ponomarev، نويسنده , , A. Richter، نويسنده , , H. Schnare، نويسنده , , R. Schwengner، نويسنده , , S. Skoda، نويسنده , , H.G. Thomas، نويسنده , , H. Tiesler، نويسنده , , D. Weisshaar، نويسنده , , I. Wiedenh?ver، نويسنده ,
Abstract :
Results of a 208 Pb (γ,γ′) experiment are presented aiming at an identification of the 2 + member of the long-sought two-octupole phonon multiplet. Four E2 excitations have been observed below 6.5 MeV excitation energy, two of them for the first time. However, in contrast to new results of calculations within the quasiparticle–phonon nuclear model (QPM), no obvious candidate for the two-octupole phonon vibration could be found in the present study. We discuss the Jπ=2+ states detected in this as well as previous experiments with respect to their possible two-octupole phonon structure.
Keywords :
Nuclear reactions208 Pb (? , ??) , Deduced J?=2+ levels , View the MathML source MeV , B (E2) ? , Two-octupole phonon vibration in 208 Pb , Quasiparticle–phonon model calculations , Bremsstrahlung
