60 citations · 237 across the 19 of their papers we have counts for
19 papers · 1 filter
Implications for Type Ia Supernova Nucleosynthesis from an Experimentally Constrained ON Reaction Rate
M. Alruwaili, C. Fougeres, A. M. Laird +13
The ON reaction plays a key role in shaping the -particle abundance during explosive oxygen burning in Type Ia supernovae. By enhancing -production, this r…
First measurement of 87Rb(α, xn) cross sections at weak r-process energies in supernova ν-driven ejecta to investigate elemental abundances in low-metallicity stars
C. Fougères, M. L. Avila, A. Psaltis +18
Observed abundances of Z ~ 40 elements in metal-poor stars vary from star to star, indicating that the rapid and slow neutron capture processes may not contribute alone to the synt…
Properties of states near = 6 MeV in Ne through F+p scattering
Sudarsan Balakrishnan, Laura E. Linhardt, Jeffery C. Blackmon +11
Background: The rate of energy production in the hot-CNO cycle and breakout to the rapid-proton capture process in Type I X-ray bursts is strongly related to the O()$^{…
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…
Direct cross-section measurement of the weak r-process 88Sr(α,n)91Zr reaction in ν-driven winds of core collapse supernovae
C. Fougères, M. L. Avila, H. Jayatissa +15
About half of the heavy elements beyond iron are known to be produced by the rapid neutron capture process, known as r-process. However, the astrophysical site producing the r-proc…
Study of the Mg waiting point relevant for x-ray burst nucleosynthesis via the Mg(,)Al reaction
H. Jayatissa, M. L. Avila, K. E. Rehm +13
The Mg(,)Al reaction rate has been identified as a major source of uncertainty for understanding the nucleosynthesis flow in Type-I x-ray bursts (XRBs). We repo…
Probing the quadrupole transition strength of 15C via deuteron inelastic scattering
J. Chen, B. P. Kay, T. L. Tang +22
Deuteron elastic scattering from 15C and inelastic scattering reactions to the first excited state of 15C were studied using a radioactive beam of 15C in inverse kinematics. The sc…
First direct measurement of the N(,)O reaction relevant for core-collapse supernovae nucleosynthesis
H. Jayatissa, M. L. Avila, K. E. Rehm +10
Understanding the explosion mechanism of a core-collapse supernova (CCSN) is important to accurately model CCSN scenarios for different progenitor stars using model-observation com…
Study of the Isomeric State in N Using the N(,He) Reaction
T. L. Tang, C. R. Hoffman, B. P. Kay +19
The isomeric state of N was studied using the N(,He)~proton-removal reactions at \mbox{11.8~MeV/} in inverse kinematics. The N beam, of which…
A novel approach for extracting model-independent nuclear level densities far from stability
D. Mücher, A. Spyrou, M. Wiedeking +22
The level density of quantum states in statistical mesoscopic systems is a critical input for various fields of physics, including nuclear physics, nuclear astrophysics, atomic phy…
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…
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…
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…
Study of and reactions with a Multi-Sampling Ionization Chamber
M. L. Avila, K. E. Rehm, S. Almaraz-Calderon +11
A large number of and reactions are known to play a fundamental role in nuclear astrophysics. This work presents a novel technique to study these reactions with the…
Independent measurement of the Hoyle state feeding from 12B using Gammasphere
M. Munch, M. Alcorta, H. O. U. Fynbo +28
Using an array of high-purity Compton-suppressed germanium detectors, we performed an independent measurement of the -decay branching ratio from to the second-…
New ANC measurement of the 1/2 state in O at 6.356 MeV, that dominates the C(,n)O reaction rate at temperatures relevant for the s-process
M. L. Avila, G. V. Rogachev, E. Koshchiy +5
Background: Accurate knowledge of the C(,)O reaction cross section is important for the understanding of the s-process in AGB stars, since it is considered to b…
Constraining the 6.05 MeV 0 and 6.13 MeV 3 cascade transitions in the C(,)O reaction using the Asymptotic Normalization Coefficients
M. L. Avila, G. V. Rogachev, E. Koshchiy +7
Background. The CO reaction plays a fundamental role in astrophysics and needs to be known with accuracy better than 10%. Cascade transitions through the exc…
-cluster ANCs for nuclear astrophysics
M. L Avila, G. V. Roachev, E. Koshchiy +5
Background. Many important -particle induced reactions for nuclear astrophysics may only be measured using indirect techniques due to small cross sections at the energy of inter…