Study of the pygmy dipole resonance in 94Mo using the coincidence technique

Derya, V.; Endres, J.; Elvers, M.; Harakeh, Mohsen; Pietralla, N.; Romig, C.; Savran, D.; Scheck, M.; Siebenhuehner, F.; Stoica, Victor; Wörtche, H. J.; Zilges, A.

doi:10.1016/j.nuclphysa.2013.02.018

Cited by 24 publications

(21 citation statements)

References 47 publications

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“…This observation is a clear indication for a change of structure in the low-lying E1 strength. The same pattern has been observed in 94 Mo [26], 124 Sn [27,28], and 138 Ba [29]. Figure 2 provides an overview of the data, showing the comparison of the results of the corresponding (α, α γ) and (γ, γ ) experiments for each nucleus.…”

Section: Results From Hadron Scatteringsupporting

confidence: 67%

Experimental results on the Pygmy Dipole Resonance

Savran

2014

EPJ Web of Conferences

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Section: Results From Hadron Scatteringsupporting

confidence: 67%

Experimental results on the Pygmy Dipole Resonance

Savran

2014

EPJ Web of Conferences

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“…[2], and recent experimental reports on the isospin content of pygmy dipole states [3][4][5][6] (data compiled in Fig. 1(a)).…”

Section: Introductionmentioning

confidence: 78%

Properties and Significance of the Surface Dipole Mode

Papakonstantinou

2015

Proceedings of the Conference on Advances in Radioactive Isotope Science (ARIS2014)

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A strong isoscalar dipole resonance is known to be excited in a variety of nuclei, including isospin symmetric ones, at approximately 6 − 7 MeV. A series of theoretical studies summarized here and accumulating experimental evidence support an interpretation of the above dipole resonance as an elementary surface vibration. Obviously, such a mode is potentially as interesting as any collective excitation for a variety of reasons. In addition, though, it was found to account for the observed isoscalar segment of pygmy dipole strength. As discussed in this brief survey, this has important implications for pygmy-strength interpretations and searches for genuine neutron-skin oscillations.

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“…The results from systematic (D,D'J) studies on different closed neutron-and proton-shell nuclei and the open shell nucleus 94 Mo were quite surprising [23][24][25][26]: whereas the E1 strength below about 6-7 MeV could be populated in both, photon scattering and alpha scattering, the higher lying strength was not excited by the alpha particles. Just from this experimental result the E1 strength below the GDR has to be divided into two groups: One low-lying part below about 6-7 MeV with a strong isoscalar component and a surface-peaked wave function.…”

Section: -P2mentioning

confidence: 99%

The Pygmy Dipole Resonance – past, presence, and future

Zilges

Savran

2015

EPJ Web of Conferences

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Abstract. The advent of improved experimental and theoretical techniques has brought a lot of attention to the electric dipole (E1) response of atomic nuclei in the last decade. The extensive studies have led to the observation and interpretation of a concentration of E1 strength energetically below the Giant Dipole Resonance in many nuclei. This phenomenon is commonly denoted as Pygmy Dipole Resonance (PDR). This contribution will summarize the most important results obtained using different experimental probes, define the challenges to gain a deeper understanding of the excitations, and discuss the newest experimental developments.

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Study of the pygmy dipole resonance in 94Mo using the coincidence technique

Cited by 24 publications

References 47 publications

Experimental results on the Pygmy Dipole Resonance

Experimental results on the Pygmy Dipole Resonance

Properties and Significance of the Surface Dipole Mode

The Pygmy Dipole Resonance – past, presence, and future

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