170 citations · 1.1k across the 39 of their papers we have counts for
39 papers
Independent Validation of Octupole Collectivity in radium-224 through lifetime measurements of low-lying negative-parity states
D. White, D. O'Donnell, A. Avaa +30
The nucleus Ra is a key benchmark for octupole deformation and for theoretical descriptions of enhanced Schiff moments in reflection-asymmetric nuclei. While Coulomb-excita…
Core Breaking at Low Spin in Zn from Nuclear Resonance Fluorescence
S. R. Johnson, R. V. F. Janssens, B. A. Brown +11
Low-spin excited states in Zn have been studied at the High Intensity Gamma-Ray Source (HIS) from the ground state up to the particle emission threshold using the nuclear…
Beta-decay Half Lives beyond Ca: A Systematic Survey of Decay Properties approaching the Neutron Dripline
W. -J. Ong, Z. Y. Xu, R. Grzywacz +83
In an experiment performed at the Facility for Rare Isotope Beams (FRIB) using the FRIB Decay Station initiator (FDSi), 15 new half lives of isotopes near Ca were measured.…
Triaxiality and shape dynamics in Ge
T. M. Kowalewski, A. D. Ayangeakaa, N. Sensharma +31
The electromagnetic properties of low-lying states in Ge were investigated via multi-step Coulomb excitation of a Ge beam impinging on a Pb target at the ATLA…
Universal Effective Charges in the and Shells
T. H. Ogunbeku, J. M. Allmond, T. J. Gray +79
The 247-keV state in Sc, populated in the decay of Ca, is reported here as a nanosecond isomer with a half-life of 26.0(22) ns. The state is interpreted as the $1…
Investigation of P levels near the proton threshold by Nuclear Resonance Fluorescence and the impact on the Si(p,)P thermonuclear rate
David Gribble, Christian Iliadis, Robert V. F. Janssens +13
We investigated the nuclear structure of P near the proton threshold using Nuclear Resonance Fluorescence (NRF) to refine the properties of key resonances in the Si(p…
Gamma decay of the Sm Isovector Giant Dipole Resonance: Smekal-Raman Scattering as a Novel Probe of Nuclear Ground-State Deformation
J. Kleemann, N. Pietralla, U. Friman-Gayer +19
Gamma decays of the isovector giant dipole resonance (GDR) of the deformed nucleus Sm from -Smekal-Raman and elastic scattering were measured using linearly polarize…
Evolution of chirality from transverse wobbling in Pr
N. Sensharma, U. Garg, Q. B. Chen +20
Chirality is a distinct signature that characterizes triaxial shapes in nuclei. We report the first observation of chirality in the nucleus Pr using a high-statistics Gamma…
Determination of the spins and parities for the 0 and 0 states in Zr
J. Wu, M. P. Carpenter, F. G. Kondev +12
Two 0 states at 1294.5 and 1774.0 keV, together with three 2 and one 4 levels, were identified or unambiguously spin-parity assigned for the first time in $^{100}…
White Paper on the TUNL Nuclear Astrophysics Program
Christian Iliadis, Art E. Champagne, Akaa D. Ayangeakaa +2
The White Paper describes the nuclear astrophysics program at the Triangle Universities Nuclear Laboratory (TUNL), with the intent of providing input for the 2023 NSAC Long Range p…
E2 Rotational Invariants of and states for Cd: the Emergence of Collective Rotation
T. J. Gray, J. M. Allmond, R. V. F. Janssens +29
The collective structure of Cd is elucidated by multi-step Coulomb excitation of a 3.849 MeV/ beam of Cd on a 1.1 mg/cm Pb target using GRETINA-CHICO…
Ground-state and decay properties of neutron-rich 106Nb
A. J. Mitchell, R. Orford, G. J. Lane +17
The ground-state properties of neutron-rich 106Nb and its beta decay into 106Mo have been studied using the CARIBU radioactive-ion-beam facility at Argonne National Laboratory. Nio…
Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction
N. Mărginean, D. Little, Y. Tsunoda +75
The low-spin structure of the semimagic 64Ni nucleus has been considerably expanded: combining four experiments, several 0+ and 2+ excited states were identified below 4.5 MeV, and…
Search for the intruder state in P
M. Salathe, H. L. Crawford, A. O. Macchiavelli +13
The excitation energy of deformed intruder states (specifically the 2p2h bandhead) as a function of proton number along is of interest both in terms of better understand…
Probing the role of proton cross-shell excitations in 70Ni using nucleon knockout reactions
B. Elman, A. Gade, R. V. F. Janssens +21
The neutron-rich Ni isotopes have attracted attention in recent years due to the occurrence of shape or configuration coexistence. We report on the difference in population of exci…
Evidence for rigid triaxial deformation in Ge from a model-independent analysis
A. D. Ayangeakaa, R. V. F. Janssens, S. Zhu +25
An extensive, model-independent analysis of the nature of triaxial deformation in Ge, a candidate for neutrinoless double-beta () decay, was carried out following mult…
Longitudinal Wobbling Motion in Au
N. Sensharma, U. Garg, Q. B. Chen +19
The rare phenomenon of nuclear wobbling motion has been investigated for the nucleus Au. A longitudinal wobbling-bands pair has been identified and clearly distinguished fr…
New -ray Transitions Observed in Ne with Implications for the O(,)Ne Reaction Rate
M. R. Hall, D. W. Bardayan, T. Baugher +34
The O(,)Ne reaction is responsible for breakout from the hot CNO cycle in Type I x-ray bursts. Understanding the properties of resonances between and…
Key Ne states identified affecting -ray emission from F in novae
M. R. Hall, D. W. Barbadian, T. Baugher +34
Detection of nuclear-decay rays provides a sensitive thermometer of nova nucleosynthesis. The most intense -ray flux is thought to be annihilation radiation from the d…
Understanding the Low-Energy Enhancement of the -ray Strength Function of Fe
M. D. Jones, A. O. Macchiavelli, M. Wiedeking +27
A model-independent technique was used to determine the -ray Strength Function (SF) of Fe down to -ray energies less than 1 MeV for the first time with GRETINA usin…
Probing the single-particle character of rotational states in F using a short-lived isomeric beam
D. Santiago-Gonzalez, K. Auranen, M. L. Avila +19
A beam containing a substantial component of both the , ns isomeric state of F and its , 109.77-min ground state has been utilized to study membe…
Direct Evidence for Octupole Deformation in Ba and the Origin of Large Moment Variations in Reflection-Asymmetric Nuclei
Brian Bucher, Shaofei Zhu, Ching-Yen Wu +24
Despite the more than one order of magnitude difference between the measured dipole moments in Ba and Ba, the strength of the octupole correlations in Ba ar…
Single-particle and collective excitations in Ni
M. Albers, S. Zhu, A. D. Ayangeakaa +21
{\bf Background:} Level sequences of rotational character have been observed in several nuclei in the mass region. The importance of the deformation-driving and $…
Study of the astrophysically important and reactions
M. L. Avila, K. E. Rehm, S. Almaraz-Calderon +11
The NaMg and NaAl reactions are important for our understanding of the Al abundance in massive stars. The aim of this work is to report…