63 citations · 204 across the 23 of their papers we have counts for
23 papers
TITAN mass measurements of neutron-rich Cs, Ba and r-process lanthanide abundances
T. -H. Yeh, J. D. Cardona, Y. Wang +26
We present measurements for the masses of five neutron-rich isotopes, Cs and Ba, probed for the first time by TITAN at TRIUMF with time-of-flight measureme…
First direct measurement of Ca single -decay Q value with the TITAN Penning trap
S. Kakkar, D. Perera, J. Ash +19
Neutrinoless double -decay (0), if observed, would provide unequivocal evidence of physics beyond the Standard Model. Ca is an interesting candidate system to study…
Combined Garvey Kelson Relations for Mass Determinations and Machine Learning
I. Bentley, A. Fiorito, M. Gebran +2
Simple Garvey Kelson mass relations applied in two regions are often used as an evaluation metric for machine learning based mass models. These relations have also been used in the…
Exploration for Astromers near Sn with the Canadian Penning Trap
A. A. Valverde, S. Cupp, A. Gross +26
Nuclear isomers can have significant impacts on astrophysical nucleosynthesis processes, with recent efforts demonstrating that the population of isomeric states with different hal…
The mass of Sn and Bayesian extrapolations to the proton drip line
Christian M. Ireland, Georg Bollen, Scott E. Campbell +23
The favorable energy configurations of nuclei at magic numbers of neutrons and protons are fundamental for understanding the evolution of nuclear structure. The ${Z=50}…
Constraining Nuclear Mass Models Using r-process Observables with Multi-objective Optimization
Mengke Li, Matthew Mumpower, Nicole Vassh +2
Predicting nuclear masses is a longstanding challenge. One path forward is machine learning (ML) which trains on experimental data, but can suffer large errors when extrapolating t…
Astrophysical significance of the isomer Ag demonstrated through direct mass measurement
F. Rivero, M. Brodeur, J. A. Clark +18
The abundance of elements heavier than iron produced via the astrophysical rapid-neutron capture process depends sensitively on the atomic mass of the involved nuclei as well as th…
Refined topology of the N = 20 island of inversion with high precision mass measurements of Na and Mg
E. M. Lykiardopoulou, C. Walls, J. Bergmann +30
Mass measurements of Na and Mg using the TITAN MR-TOF-MS at TRIUMF's ISAC facility are presented, with the uncertainty of the Na mass reduced by over two…
Precision mass measurements of Sr using TITAN's Multiple-Reflection Time-of-Flight Mass Spectrometer
Z. Hockenbery, T. Murböck, B. Ashrafkhani +29
We report precision mass measurements of Sr performed with the TITAN Multiple-Reflection Time-of-Flight Mass Spectrometer. This marks a first time mass measurement of $^{…
Mass measurements of neutron-rich nuclides using the Canadian Penning Trap to inform predictions in the -process rare-earth peak region
D. Ray, N. Vassh, B. Liu +25
Studies aiming to determine the astrophysical origins of nuclei produced by the rapid neutron capture process ( process) rely on nuclear properties as inputs for simulations. Th…
High-precision mass measurement of Sn restores smoothness of the mass surface
C. M. Ireland, F. M. Maier, G. Bollen +20
As a step towards the ultimate goal of a high-precision mass measurement of doubly-magic Sn, the mass of Sn was measured at the Low Energy Beam and Ion Trap (LEBIT)…
Precise Mass Measurement of the Longest Odd-Odd Chain of \boldmath Ground States
B. Liu, M. Brodeur, J. A. Clark +14
Precise mass measurements of the ground and isomeric states of the odd-odd Rh were performed using the Canadian Penning Trap at Argonne National Laborat…
Investigating the effects of precise mass measurements of Ru and Pd isotopes on machine learning mass modeling
W. S. Porter, B. Liu, D. Ray +19
Atomic masses are a foundational quantity in our understanding of nuclear structure, astrophysics and fundamental symmetries. The long-standing goal of creating a predictive global…
Phase-Imaging Ion-Cyclotron-Resonance Mass Spectrometry with the Canadian Penning Trap at CARIBU
D. Ray, A. A. Valverde, M. Brodeur +9
The Canadian Penning Trap mass spectrometer (CPT) has conducted precision mass measurements of neutron-rich nuclides from the CAlifornium Rare Isotope Breeder Upgrade (CARIBU) of t…
Precise Mass Measurements of Isobars with the Canadian Penning Trap: Resolving the anomaly at Te
A. A. Valverde, F. G. Kondev, B. Liu +11
We report precision mass measurements of Sb, Te, and I, produced at CARIBU at Argonne National Laboratory's ATLAS facility and measured using the Cana…
Direct mass measurements of neutron-rich zinc and gallium isotopes: an investigation of the formation of the first r-process peak
Andrew Jacobs, Stylianos Nikas, John Ash +23
The prediction of isotopic abundances resulting from the rapid neutron capture process (r-process) requires high-precision mass measurements. Using TITAN's on-line time-of-flight s…
Investigating nuclear structure near and : Precision mass measurements of neutron-rich Ca, Ti and V isotopes
W. S. Porter, E. Dunling, E. Leistenschneider +32
Nuclear mass measurements of isotopes are key to improving our understanding of nuclear structure across the chart of nuclides, in particular for the determination of the appearanc…
Summit of the N=40 Island of Inversion: precision mass measurements and ab initio calculations of neutron-rich chromium isotopes
R. Silwal, C. Andreoiu, B. Ashrafkhani +24
Mass measurements continue to provide invaluable information for elucidating nuclear structure and scenarios of astrophysical interest. The transition region between the a…
Mapping the Island of Inversion: Precision Mass Measurements of Neutron-rich Fe Isotopes
W. S. Porter, B. Ashrafkhani, J. Bergmann +32
Nuclear properties across the chart of nuclides are key to improving and validating our understanding of the strong interaction in nuclear physics. We present high-precision mass m…
Precise Q value measurements of Ag and Cd with the Canadian Penning trap for evaluation of potential ultra-low Q value -decays
Nadeesha D. Gamage, Rachel Sandler, Fritz Buchinger +8
An ultra-low Q value -decay can occur from a parent nuclide to an excited state in the daughter with <1 keV. These decays are of interest for nuclear -decay theory a…
Mass measurements of Ga reduce x-ray burst model uncertainties and extend the evaluated isobaric multiplet mass equation
S. F. Paul, J. Bergmann, J. D. Cardona +27
We report precision mass measurements of neutron-deficient gallium isotopes approaching the proton drip line. The measurements of Ga performed with the TITAN multiple-ref…
Precision mass measurements of neutron-rich scandium isotopes refine the evolution of and shell closures
E. Leistenschneider, E. Dunling, G. Bollen +17
We report high-precision mass measurements of Sc isotopes performed at the LEBIT facility at NSCL and at the TITAN facility at TRIUMF. Our results provide a substantial r…
Precision mass measurements on neutron-rich rare-earth isotopes at JYFLTRAP - reduced neutron pairing and implications for the -process calculations
M. Vilen, J. M. Kelly, A. Kankainen +16
The rare-earth peak in the -process abundance pattern depends sensitively on both the astrophysical conditions and subtle changes in nuclear structure in the region. This work t…