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Investigation of low-lying electric dipole strength in the semimagic nucleus Ca44

Publication ,  Journal Article
Isaak, J; Savran, D; Fritzsche, M; Galaviz, D; Hartmann, T; Kamerdzhiev, S; Kelley, JH; Kwan, E; Pietralla, N; Romig, C; Rusev, G; Tonchev, AP ...
Published in: Physical Review C - Nuclear Physics
March 7, 2011

The dipole-strength distribution in the semimagic nucleus Ca44 has been measured up to 10 MeV excitation energy in photon-scattering experiments using bremsstrahlung and monoenergetic 100% linearly polarized photon beams. The combination of both measurements allows a clear determination of spin and parity quantum numbers of the excited states as well as absolute cross sections and transition probabilities. The results show that the majority of the dipole strength in Ca44 below 10 MeV is due to E1 transitions while M1 strength plays only a minor role. The experimental results are compared to the strength in the neighboring doubly magic nuclei Ca40,48 and to microscopic calculations within the extended theory of finite Fermi systems in order to investigate the evolution of the low-lying E1 strength in this isotopic chain. Both, experiment and calculations, show a nontrivial dependence of the total E1 strength as a function of the neutron number. © 2011 American Physical Society.

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Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

March 7, 2011

Volume

83

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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MLA
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Isaak, J., Savran, D., Fritzsche, M., Galaviz, D., Hartmann, T., Kamerdzhiev, S., … Zilges, A. (2011). Investigation of low-lying electric dipole strength in the semimagic nucleus Ca44. Physical Review C - Nuclear Physics, 83(3). https://doi.org/10.1103/PhysRevC.83.034304
Isaak, J., D. Savran, M. Fritzsche, D. Galaviz, T. Hartmann, S. Kamerdzhiev, J. H. Kelley, et al. “Investigation of low-lying electric dipole strength in the semimagic nucleus Ca44.” Physical Review C - Nuclear Physics 83, no. 3 (March 7, 2011). https://doi.org/10.1103/PhysRevC.83.034304.
Isaak J, Savran D, Fritzsche M, Galaviz D, Hartmann T, Kamerdzhiev S, et al. Investigation of low-lying electric dipole strength in the semimagic nucleus Ca44. Physical Review C - Nuclear Physics. 2011 Mar 7;83(3).
Isaak, J., et al. “Investigation of low-lying electric dipole strength in the semimagic nucleus Ca44.” Physical Review C - Nuclear Physics, vol. 83, no. 3, Mar. 2011. Scopus, doi:10.1103/PhysRevC.83.034304.
Isaak J, Savran D, Fritzsche M, Galaviz D, Hartmann T, Kamerdzhiev S, Kelley JH, Kwan E, Pietralla N, Romig C, Rusev G, Sonnabend K, Tonchev AP, Tornow W, Zilges A. Investigation of low-lying electric dipole strength in the semimagic nucleus Ca44. Physical Review C - Nuclear Physics. 2011 Mar 7;83(3).

Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

March 7, 2011

Volume

83

Issue

3

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics