Dipole and quadrupole excitations in $^{88}\mathrm{Sr}$ up to $6.8\phantom{\rule{0.3em}{0ex}}\mathrm{MeV}$

Dipole and quadrupole excitations in ${}^{88}{Sr}$ up to $6.8 MeV$

L. Käubler, H. Schnare, R. Schwengner, H. Prade, F. Dönau, P. von Brentano, J. Eberth, J. Enders, A. Fitzler, C. Fransen, M. Grinberg, R.-D. Herzberg, H. Kaiser, P. von Neumann-Cosel, N. Pietralla, A. Richter, G. Rusev, Ch. Stoyanov, and I. Wiedenhöver

Phys. Rev. C 70, 064307 – Published 10 December 2004

Abstract

Dipole and quadrupole excitations in the semimagic $N = 50$ nucleus ${}^{88}{Sr}$ were investigated at the superconducting Darmstadt electron linear accelerator S-DALINAC with bremsstrahlung of an end-point energy of $6.8 MeV$ . Many new dipole excitations could be identified, and their reduced excitation probabilities were determined. The experimental findings are discussed in the context of quasiparticle-phonon-model and shell-model calculations. A breaking of the $N = 50$ core is essential to describe the structure of the observed excitations. The two-phonon quadrupole-octupole $J^{π} = 1^{-}$ state exhibits unusual features which are presently not understood.

Received 30 August 2004

DOI:https://doi.org/10.1103/PhysRevC.70.064307

Authors & Affiliations

L. Käubler¹, H. Schnare¹, R. Schwengner¹, H. Prade¹, F. Dönau¹, P. von Brentano², J. Eberth², J. Enders³, A. Fitzler², C. Fransen², M. Grinberg⁴, R.-D. Herzberg^2,*, H. Kaiser^3,†, P. von Neumann-Cosel³, N. Pietralla^2,5, A. Richter³, G. Rusev^1,4, Ch. Stoyanov⁴, and I. Wiedenhöver^2,‡

¹Institut für Kern- und Hadronenphysik, FZ Rossendorf, Postfach 510119, 01314 Dresden, Germany
²Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany
³Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
⁴Institute for Nuclear Research and Nuclear Energy, BAS, 72 Tzarigradsko Chaussee, 1784 Sofia, Bulgaria
⁵Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794, USA

^*Present address: Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, U.K.
^†Present address: Ingenieurbüro Fritz, 64683 Einhausen, Germany.
^‡Present address: Physics Department, Florida State University, Tallahassee, FL 32306.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 70, Iss. 6 — December 2004

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics

Dipole and quadrupole excitations in ${}^{88}{Sr}$ up to $6.8 MeV$

L. Käubler, H. Schnare, R. Schwengner, H. Prade, F. Dönau, P. von Brentano, J. Eberth, J. Enders, A. Fitzler, C. Fransen, M. Grinberg, R.-D. Herzberg, H. Kaiser, P. von Neumann-Cosel, N. Pietralla, A. Richter, G. Rusev, Ch. Stoyanov, and I. Wiedenhöver

Phys. Rev. C 70, 064307 – Published 10 December 2004

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review C

covering nuclear physics

Dipole and quadrupole excitations in Sr88 up to 6.8MeV

L. Käubler, H. Schnare, R. Schwengner, H. Prade, F. Dönau, P. von Brentano, J. Eberth, J. Enders, A. Fitzler, C. Fransen, M. Grinberg, R.-D. Herzberg, H. Kaiser, P. von Neumann-Cosel, N. Pietralla, A. Richter, G. Rusev, Ch. Stoyanov, and I. Wiedenhöver

Phys. Rev. C 70, 064307 – Published 10 December 2004

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Dipole and quadrupole excitations in ${}^{88}{Sr}$ up to $6.8 MeV$