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Splitting of the Pygmy Dipole Resonance

Savran, D. ; Endres, J. ; Harakeh, M. N. ; Pietralla, N. ; Sonnabend, K. ; Stoica, V. I. ; Wörtche, H. J. ; Berg, A. M. van den ; Zilges, A. (2011)
Splitting of the Pygmy Dipole Resonance.
In: Journal of Physics: Conference Series, 312 (9)
doi: 10.1088/1742-6596/312/9/092055
Artikel, Bibliographie

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Kurzbeschreibung (Abstract)

We report on experiments using the (α, α′ γ) method to investigate the structure of the Pygmy Dipole Resonance (PDR) in the nuclei ⁹⁴Mo, ¹²⁴Sn, ¹³⁸Ba and ¹⁴⁰Ce. The experiments were performed with the Big-Bite Spectrometer (BBS) at the KVI at an incident energy of Eα = 136 MeV. The method allows a clean separation of the PDR from other excitations in the same energy region by selecting the ground-state γ-decay channel. In addition, the high resolution of the γ-ray spectroscopy using high-purity Germanium detectors allows a state-to-state analysis even in the case of the rather high level density of the investigated nuclei. The comparison to (γ,γ′) experiments on the same nuclei reveals a splitting of the PDR into two groups of states with different underlying structure.

Typ des Eintrags: Artikel
Erschienen: 2011
Autor(en): Savran, D. ; Endres, J. ; Harakeh, M. N. ; Pietralla, N. ; Sonnabend, K. ; Stoica, V. I. ; Wörtche, H. J. ; Berg, A. M. van den ; Zilges, A.
Art des Eintrags: Bibliographie
Titel: Splitting of the Pygmy Dipole Resonance
Sprache: Englisch
Publikationsjahr: 23 September 2011
Verlag: IOP Publishing
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Physics: Conference Series
Jahrgang/Volume einer Zeitschrift: 312
(Heft-)Nummer: 9
Kollation: 6 Seiten
DOI: 10.1088/1742-6596/312/9/092055
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Kurzbeschreibung (Abstract):

We report on experiments using the (α, α′ γ) method to investigate the structure of the Pygmy Dipole Resonance (PDR) in the nuclei ⁹⁴Mo, ¹²⁴Sn, ¹³⁸Ba and ¹⁴⁰Ce. The experiments were performed with the Big-Bite Spectrometer (BBS) at the KVI at an incident energy of Eα = 136 MeV. The method allows a clean separation of the PDR from other excitations in the same energy region by selecting the ground-state γ-decay channel. In addition, the high resolution of the γ-ray spectroscopy using high-purity Germanium detectors allows a state-to-state analysis even in the case of the rather high level density of the investigated nuclei. The comparison to (γ,γ′) experiments on the same nuclei reveals a splitting of the PDR into two groups of states with different underlying structure.

Zusätzliche Informationen:

International Nuclear Physics Conference 2010 (INPC2010); Erstveröffentlichung; Art.No.: 092055

Sachgruppe der Dewey Dezimalklassifikatin (DDC): 500 Naturwissenschaften und Mathematik > 530 Physik
Fachbereich(e)/-gebiet(e): 05 Fachbereich Physik
05 Fachbereich Physik > Institut für Kernphysik
Hinterlegungsdatum: 05 Mär 2024 12:04
Letzte Änderung: 05 Mär 2024 12:04
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