176 citations · 341 across the 19 of their papers we have counts for
20 papers
Quantum Phase Transitions in Nuclei and the Origin of Rhodium
P. Agarwal, H. Schatz, A. Francis +3
The astrophysical rapid neutron capture process (r-process) is a major nucleosynthesis process responsible for the production of elements heavier than copper. Prominent features in…
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.…
Sensitivity of Nuclear Reaction Rates in X-ray Burst Models
I. Sultana, A. Estrade, B. S. Meyer +1
Type I X-ray bursts (XRBs) are thermonuclear runaways on the surface of accreting neutron stars, powered by rapid proton-capture and alpha-capture processes on neutron-deficient nu…
Crust composition and the Shallow Heat Source in KS 1731-260
R. Jain, E. F. Brown, H. Schatz +11
The presence of a strong shallow heat source of unknown origin in accreting neutron star crusts has been inferred by analyzing X-ray observations of their cooling in quiescence. We…
Machine-Learning-Enabled Measurements of Astrophysical (p,n) Reactions with the SECAR Recoil Separator
P. Tsintari, N. Dimitrakopoulos, R. Garg +29
The synthesis of heavy elements in supernovae is affected by low-energy (n,p) and (p,n) reactions on unstable nuclei, yet experimental data on such reaction rates are scarce. The S…
Enhanced production of 60Fe in massive stars
A. Spyrou, D. Richman, A. Couture +23
Massive stars are a major source of chemical elements in the cosmos, ejecting freshly produced nuclei through winds and core-collapse supernova explosions into the interstellar med…
Study of the Ar()K reaction rate via proton scattering on K, and its impact on properties of modeled X-Ray bursts
A. Lauer-Coles, C. M. Deibel, J. C. Blackmon +21
Background: Type I X-Ray bursts (XRBs) are energetic stellar explosions that occur on the surface of a neutron star in an accreting binary system with a low-mass H/He-rich companio…
Neutrino-Driven Outflows and the Elemental Abundance Patterns of Very Metal-Poor Stars
A. Psaltis, M. Jacobi, F. Montes +3
The elemental abundances between strontium and silver () observed in the atmospheres of very metal-poor stars (VMP) in the Galaxy may contain the fingerprint of the weak…
Measurement of Charge State Distributions using a Scintillation Screen
C. Marshall, Z. Meisel, F. Montes +12
Absolute cross sections measured using electromagnetic devices to separate and detect heavy recoiling ions need to be corrected for charge state fractions. Accurate prediction of c…
Impact of Pycnonuclear Fusion Uncertainties on the Cooling of Accreting Neutron Star Crusts
R. Jain, E. F. Brown, H. Schatz +11
The observation of X-rays during quiescence from transiently accreting neutron stars provides unique clues about the nature of dense matter. This, however, requires extensive model…
First direct measurement constraining the Ar(,p)K reaction cross section for mixed hydrogen and helium burning in accreting neutron stars
J. Browne, K. A. Chipps, K. Schmidt +25
The rate of the final step in the astrophysical p-process, the Ar(,\textit{p})K reaction, suffers from large uncertainties due to lack of experimental data, des…
Horizons: Nuclear Astrophysics in the 2020s and Beyond
H. Schatz, A. D. Becerril Reyes, A. Best +162
Nuclear Astrophysics is a field at the intersection of nuclear physics and astrophysics, which seeks to understand the nuclear engines of astronomical objects and the origin of the…
Constraining nucleosynthesis in neutrino-driven winds: observations, simulations and nuclear physics
A. Psaltis, A. Arcones, F. Montes +4
A promising astrophysical site to produce the lighter heavy elements of the first -process peak () is the moderately neutron rich () neutrino-driven…
Zn -delayed proton emission establishes the Ni -process waiting point bypass
M. Saxena, W. -J Ong, Z. Meisel +32
We measured the Zn -delayed proton (p) and emission at the National Superconducting Cyclotron Laboratory. We find a Zn half-life of 43.6 0.2 ms, p…
Online Bayesian Optimization for a Recoil Mass Separator
S. A. Miskovich, F. Montes, G. P. A. Berg +12
The SEparator for CApture Reactions (SECAR) is a next-generation recoil separator system at the Facility for Rare Isotope Beams (FRIB) designed for the direct measurement of captur…
The Impact of Neutron Transfer Reactions on Heating and Cooling of Accreted Neutron Star Crusts
H. Schatz, Z. Meisel, E. F. Brown +10
Nuclear reactions heat and cool the crust of accreting neutron stars and need to be understood to interpret observations of X-ray bursts and of long-term cooling in transiently acc…
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…
Improved Nuclear Physics Near Refines Urca Neutrino Luminosities in Accreted Neutron Star Crusts
Zach Meisel, Alec Hamaker, G. Bollen +16
We performed a Penning trap mass measurement of at the National Superconducting Cyclotron Laboratory and NuShellX calculations of the and $^{62}{\rm…
Mass Measurements of Neutron-Rich Gallium Isotopes Refine Production of Nuclei of the First r-Process Abundance Peak in Neutron Star Merger Calculations
M. P. Reiter, S. Ayet San Andrés, S. Nikas +33
We report mass measurements of neutron-rich Ga isotopes Ga with TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN). The measurements determine the masses of $^{80-8…
Dependence of X-Ray Burst Models on Nuclear Reaction Rates
R. H. Cyburt, A. M. Amthor, A. Heger +5
X-ray bursts are thermonuclear flashes on the surface of accreting neutron stars and reliable burst models are needed to interpret observations in terms of properties of the neutro…