161 citations · 761 across the 51 of their papers we have counts for
47 papers · 1 filter
First observation of the fine structure of the Pygmy Dipole Resonance in a nucleus away from stability via the decay of Rb to Sr
P. Spagnoletti, M. Ramalho, S. Tahtela +52
A comprehensive -ray spectroscopy study of excited states in Sr populated via decay of Rb (, ~keV) was performed with the GRIFFIN spect…
Direct measurement of Enhanced octupole collectivity in 148Dy
P. Spagnoletti, V. Vedia, E. Yuksel +36
Excited states in Dy were populated via decay of Ho using the GRIFFIN spectrometer at the TRIUMF ISAC-I facility. A combined measurement of the mean…
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…
Intruder structures in Si and Al
J. Williams, G. Hackman, K. Starosta +31
We have studied Si and Al using C(Ne,2p) and C(Ne,p) fusion-evaporation reactions. In both cases, we observed significant population of…
Extremely large oblate deformation of the first excited state in C: a new challenge to modern nuclear theory
C. Ngwetsheni, J. N. Orce, P. Navrátil +14
A Coulomb-excitation study of the high-lying first excited state at 4.439 MeV in the nucleus C has been carried out using the Pb(C,C)Pb…
Coulomb Excitation of Sr and the limits of the island of deformation
R. Russell, J. Heery, J. Henderson +33
The region of has long been associated with strongly deformed nuclear configurations. The presence of this strong deformation was recently confirmed through…
Identifying the spin trapped character of the Si isomeric state
J. Williams, G. Hackman, K. Starosta +30
The properties of a nanosecond isomer in Si, disputed in previous studies, depend on the evolution of proton and neutron shell gaps near the `island of inversion'. We have p…
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…
Cross Sections of the Rb(p,Sr and Kr(p,Rb Reactions at Energies Characteristic of the Astrophysical Process
M. Williams, B. Davids, G. Lotay +22
We have measured the cross section of the Rb(p,Sr radiative capture reaction in inverse kinematics using a radioactive beam of Rb at incident energies of 2.4…
First Evidence of Axial Shape Asymmetry and Configuration Coexistence in Zn: Suggestion for a Northern Extension of the Island of Inversion
M. Rocchini, P. E. Garrett, M. Zielinska +41
The excited states of Zn were investigated via -ray spectroscopy following Cu decay. By exploiting - angular correlation analysis, the , $3…
study of states in : Implications for new physics searches with xenon detectors
B. M. Rebeiro, S. Triambak, P. E. Garrett +21
We used the Ba reaction to carry out an in-depth study of states in Cs, up to around 2.5~MeV. In this work, we place emphasis on hitherto unobserved states b…
Proton capture on P in novae: On the existence of states at MeV and MeV in S
M. Kamil, S. Triambak, G. C. Ball +10
We use a high resolution measurement to investigate the claimed existence of a 6401(3) keV state in S that may affect the nuclear rea…
High-precision half-life determination of O via direct counting
S. Sharma, G. F. Grinyer, G. C. Ball +30
The half-life of the superallowed Fermi emitter O was determined to high precision via a direct counting experiment performed at the Isotope Separator and Accelera…
In-beam -ray spectroscopy of Mg via direct reactions
N. Kitamura, K. Wimmer, T. Miyagi +26
Background: The nucleus Mg ( and ) plays a central role in the so-called "island of inversion" where in the ground states -shell neutrons are promoted to the…
Isospin Mixing and the Cubic Isobaric Multiplet Mass Equation in the Lowest T = 2, A = 32 Quintet
M. Kamil, S. Triambak, A. Magilligan +24
The isobaric multiplet mass equation (IMME) is known to break down in the first T = 2, A = 32 isospin quintet. In this work we combine high-resolution experimental data with state-…
Coexisting normal and intruder configurations in Mg
N. Kitamura, K. Wimmer, A. Poves +25
Situated in the so-called "island of inversion," the nucleus Mg is considered as an archetypal example of the disappearance of magicity at . We report on high statisti…
First Direct Measurement of an Astrophysical p-Process Reaction Cross Section Using a Radioactive Ion Beam
G. Lotay, S. A. Gillespie, M. Williams +35
We have performed the first direct measurement of the 83Rb(p,g) radiative capture reaction cross section in inverse kinematics using a radioactive beam of 83Rb at incident energies…
Ba and La structure from lifetime measurements
B. Olaizola, A. Babu, R. Umashankar +21
The occurrence of octupole shapes in even-mass neutron-rich Ba isotopes has been well established. However, the situation with the odd-mass Ba and odd or odd-odd La nuclei around t…
Spectroscopy of states in using the reaction
B. M. Rebeiro, S. Triambak, P. E. Garrett +16
Background: The Ba isotope is the daughter nucleus in Xe decay. It also lies in a shape transitional region of the nuclear chart, making it a suitable candidat…
Investigation of pair-correlated states in Ba via the Ba() reaction
J. C. Nzobadila Ondze, B. M. Rebeiro, S. Triambak +13
We performed a high resolution study of states in Ba using the Ba() two-neutron transfer reaction. Our experiment shows a significant portion of the $L…
Spectroscopic studies of neutron-rich In and its -decay daughter, Sn, using the GRIFFIN spectrometer
F. H. Garcia, C. Andreoiu, G. C. Ball +24
The -decay of neutron-rich In into Sn was studied using the GRIFFIN spectrometer at the ISAC facility at TRIUMF. The study observed the half-lives of the ground…
High-Precision Branching Ratio Measurement and Spin Assignment Implications for Ga Superallowed Decay
A. D. MacLean, A. T. Laffoley, C. E. Svensson +48
A high-precision branching ratio measurement for the superallowed Fermi emitter Ga was performed with the Gamma-Ray Infrastructure for Fundamental Investigations of…
Spectroscopic study of Ca from the decay of K
J. K. Smith, A. B. Garnsworthy, J. L. Pore +30
The decay of K to Ca is an appropriate mechanism for benchmarking interactions spanning the and shells, but current knowledge of the -decay schem…
Structure of Mg explored via in-beam -ray spectroscopy
N. Kitamura, K. Wimmer, N. Shimizu +18
Background: In the "island of inversion", ground states of neutron-rich -shell nuclei exhibit strong admixtures of intruder configurations from the shell. The nucleus $^{3…