Fine Structure in the Energy Region of the Isoscalar Giant Quadrupole Resonance: Characteristic Scales from a Wavelet Analysis

Shevchenko, A. ; Carter, J. ; Fearick, R. ; Förtsch, S. ; Fujita, H. ; Fujita, Y. ; Kalmykov, Y. ; Lacroix, D. ; Lawrie, J. ; Neumann-Cosel, P. ; Neveling, R. ; Ponomarev, V. ; Richter, A. ; Sideras-Haddad, E. ; Smit, F. ; Wambach, J. (2004)
Fine Structure in the Energy Region of the Isoscalar Giant Quadrupole Resonance: Characteristic Scales from a Wavelet Analysis.
In: Physical Review Letters, 93 (12)
doi: 10.1103/PhysRevLett.93.122501
Article, Bibliographie

Item Type:

Article

Erschienen:

2004

Creators:

Shevchenko, A. ; Carter, J. ; Fearick, R. ; Förtsch, S. ; Fujita, H. ; Fujita, Y. ; Kalmykov, Y. ; Lacroix, D. ; Lawrie, J. ; Neumann-Cosel, P. ; Neveling, R. ; Ponomarev, V. ; Richter, A. ; Sideras-Haddad, E. ; Smit, F. ; Wambach, J.

Type of entry:

Bibliographie

Title:

Fine Structure in the Energy Region of the Isoscalar Giant Quadrupole Resonance: Characteristic Scales from a Wavelet Analysis

Language:

English

Date:

September 2004

Publisher:

American Physical Society

Journal or Publication Title:

Physical Review Letters

Volume of the journal:

Issue Number:

DOI:

10.1103/PhysRevLett.93.122501

Alternative Abstract:

Alternative abstract

Language

Fine structure in the energy region of the isoscalar giant quadrupole resonance in nuclei is observed in high-resolution proton scattering experiments at iThemba LABS over a wide mass range. A novel method based on wavelet transforms is introduced for the extraction of scales characterizing the fine structure. A comparison with microscopic model calculations including two-particle two-hole (2p2h) degrees of freedom identifies the coupling to surface vibrations as the main source of the observed scales. A generic pattern is also found for the stochastic coupling to the background of the more complex states.

English

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