Scholars@Duke publication: Isospin properties of electric dipole excitations in 48Ca

Isospin properties of electric dipole excitations in 48Ca

Publication , Journal Article

Derya, V; Savran, D; Endres, J; Harakeh, MN; Hergert, H; Kelley, JH; Papakonstantinou, P; Pietralla, N; Ponomarev, VY; Roth, R; Rusev, G ...

Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

March 7, 2014

Published version (DOI)

Two different experimental approaches were combined to study the electric dipole strength in the doubly-magic nucleus ⁴⁸Ca below the neutron threshold. Real-photon scattering experiments using bremsstrahlung up to 9.9 MeV and nearly mono-energetic linearly polarized photons with energies between 6.6 and 9.51 MeV provided strength distribution and parities, and an (α, ^{α '}γ) experiment at Eα = 136 MeV gave cross sections for an isoscalar probe. The unexpected difference observed in the dipole response is compared to calculations using the first-order random-phase approximation and points to an energy-dependent isospin character. A strong isoscalar state at 7.6 MeV was identified for the first time supporting a recent theoretical prediction. © 2014 The Authors.

Duke Scholars

Author John H Kelley Physics

Author Werner Tornow Physics

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2014.01.050

ISSN

0370-2693

Publication Date

March 7, 2014

Volume

730

Start / End Page

288 / 292

Related Subject Headings

Nuclear & Particles Physics
51 Physical sciences
49 Mathematical sciences
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0201 Astronomical and Space Sciences
0105 Mathematical Physics

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Derya, V., Savran, D., Endres, J., Harakeh, M. N., Hergert, H., Kelley, J. H., … Zilges, A. (2014). Isospin properties of electric dipole excitations in 48Ca. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 730, 288–292. https://doi.org/10.1016/j.physletb.2014.01.050

Derya, V., D. Savran, J. Endres, M. N. Harakeh, H. Hergert, J. H. Kelley, P. Papakonstantinou, et al. “Isospin properties of electric dipole excitations in 48Ca.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 730 (March 7, 2014): 288–92. https://doi.org/10.1016/j.physletb.2014.01.050.

Derya V, Savran D, Endres J, Harakeh MN, Hergert H, Kelley JH, et al. Isospin properties of electric dipole excitations in 48Ca. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2014 Mar 7;730:288–92.

Derya, V., et al. “Isospin properties of electric dipole excitations in 48Ca.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 730, Mar. 2014, pp. 288–92. Scopus, doi:10.1016/j.physletb.2014.01.050.

Derya V, Savran D, Endres J, Harakeh MN, Hergert H, Kelley JH, Papakonstantinou P, Pietralla N, Ponomarev VY, Roth R, Rusev G, Tonchev AP, Tornow W, Wörtche HJ, Zilges A. Isospin properties of electric dipole excitations in 48Ca. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2014 Mar 7;730:288–292.

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2014.01.050

ISSN

0370-2693

Publication Date

March 7, 2014

Volume

730

Start / End Page

288 / 292

Related Subject Headings

Nuclear & Particles Physics
51 Physical sciences
49 Mathematical sciences
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0201 Astronomical and Space Sciences
0105 Mathematical Physics