activity
20152023
most citedOrigin of Low-Lying Enhanced E1 Strength in Rare-Earth Nuclei

48 citations · 221 across the 13 of their papers we have counts for

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16 papers · 1 filter

nucl-ex2023★ 12 cited

Experimental study of excited states of Ni via one-neutron transfer up to the neutron-separation threshold and characteristics of the pygmy dipole resonance states

M. Spieker, L. T. Baby, A. L. Conley +5

The degree of collectivity of the Pygmy Dipole Resonance (PDR) is an open question. Recently, Ries {\it et al.} have suggested the onset of the PDR beyond based on the obser…

nucl-ex2023

Decay Spectroscopy of Eu: Quasiparticle Configurations of Excited States and Structure of = Band-heads in Gd

D. Yates, R. Kruecken, I. Dillmann +45

\noindent \textbf{Background:} Detailed spectroscopy of neutron-rich, heavy, deformed nuclei is of broad interest for nuclear astrophysics and nuclear structure. Nuclei in the r-pr…

nucl-ex2023★ 13 cited

Hexadecapole strength in the rare isotopes Kr

M. Spieker, S. E. Agbemava, D. Bazin +14

In the Ge-Sr mass region, isotopes with neutron number are known to feature rapid shape changes with both nucleon number and angular momentum. To gain new insights into…

nucl-ex2022★ 9 cited

Investigation of octupole collectivity near the shape-transitional point

M. Spieker, L. A. Riley, P. D. Cottle +13

Enhanced octupole collectivity is expected in the neutron-deficient Ge, Se and Kr isotopes with neutron number and has indeed been observed for Ge. Shape c…

nucl-ex2020★ 31 cited

Accessing the Single-Particle Structure of the Pygmy Dipole Resonance in Pb

M. Spieker, A. Heusler, B. A. Brown +8

New experimental data on the neutron single-particle character of the Pygmy Dipole Resonance (PDR) in Pb are presented. They were obtained from and resonant proton…

nucl-ex2020

Collective 2p-2h intruder states in Sn studied via -decay of In using GRIFFIN

K. Ortner, C. Andreoiu, M. Spieker +25

The low-lying structure of semi-magic Sn has been investigated through the -decay of In ( min) to study shape coexistence via the reduced transitio…