Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Lori Downen"'
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Digital.CSIC. Repositorio Institucional del CSIC
instname
Universitat Politècnica de Catalunya (UPC)
Digital.CSIC. Repositorio Institucional del CSIC
instname
Presolar stardust grains found in primitive meteorites are believed to retain the isotopic composition of stellar outflows at the time of grain condensation. Therefore, laboratory measurements of their isotopic ratios represent sensitive probes for i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86383c1b10b94d2cae4aa8f4f763f3a4
http://arxiv.org/abs/2202.11568
http://arxiv.org/abs/2202.11568
Publikováno v:
Physical Review C. 99
The ${E}_{\ensuremath{\alpha}}^{\text{lab}}=0.83$ MeV resonance in the $^{22}\mathrm{Ne}(\ensuremath{\alpha},\ensuremath{\gamma})^{26}\mathrm{Mg}$ reaction strongly impacts the reaction rates in the stellar temperature region crucial for the astrophy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3efd9fefd9b53a8e0073bd3c0060f720
https://doi.org/10.1103/physrevc.99.045804
https://doi.org/10.1103/physrevc.99.045804
Autor:
Andrew Cooper, David Little, Amber Lauer, Jack Dermigny, Arthur E Champagne, Tom Clegg, Sean Hunt, Christian Iliadis, Lori Downen
Publikováno v:
Springer Proceedings in Physics ISBN: 9783030138752
Many stellar burning phases are dominated by thermonuclear reactions involving stable nuclei. Prominent examples include hydrostatic hydrogen and helium burning in low-mass stars, massive stars, and thermally pulsing asymptotic giant branch stars. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57c9a756ad292143de4b8ce3f9e9618d
https://doi.org/10.1007/978-3-030-13876-9_37
https://doi.org/10.1007/978-3-030-13876-9_37
Publikováno v:
Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
About 30% to 40% of classical novae produce dust 20-100 days after the outburst, but no presolar stardust grains from classical novae have been unambiguously identified yet. Although several studies claimed a nova paternity for certain grains, the me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99647f96bb5405a295ec27627ad05c96
Autor:
A. L. Sallaska, Sean C. Stave, Arthur E Champagne, Matt Buckner, Christopher Howard, K. J. Kelly, Brian D. Glasgow, S. Daigle, Robert C. Runkle, Luke E. Erikson, Lori Downen, Andrew I. Cooper
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 783:85-94
The Multi-sensor Airborne Radiation Survey (MARS) detector is a 14-crystal array of high-purity germanium (HPGe) detectors housed in a single cryostat. The array was used to measure the astrophysical S-factor for the 14N(p,γ)15O* reaction for severa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e182d34d9dc83ba4f854bd2372268495
Autor:
K. J. Kelly, Arthur E Champagne, Sean Hunt, Andrew L. Cooper, Lori Downen, Christian Iliadis, J. R. Dermigny
Publikováno v:
Physical Review C. 95
The $^{22}\mathrm{Ne}(p,\ensuremath{\gamma})^{23}\mathrm{Na}$ reaction is one of the most uncertain reactions in the NeNa cycle and plays a crucial role in the creation of $^{23}\mathrm{Na}$, the only stable Na isotope. Uncertainties in the low-energ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::478dec0dcbac04cfb8915373f730d504
https://doi.org/10.1103/physrevc.95.015806
https://doi.org/10.1103/physrevc.95.015806
Autor:
J. R. Newton, Richard Longland, Marija Ivanovic, J. M. Cesaratto, Spencer Carson, Christian Iliadis, Lori Downen, J. H. Kelley, Arthur E Champagne, Anton Tonchev, Gencho Rusev
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 618:190-198
Full-energy peak efficiencies of germanium detectors are frequently investigated at γ -ray energies below 4 MeV using calibrated radioactive sources, while very accurate peak efficiencies for higher photon energies are essentially non-existent. Peak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33d540b738955bb08452620b14aca5de
https://doi.org/10.1016/j.nima.2010.02.128
https://doi.org/10.1016/j.nima.2010.02.128
Autor:
M. Q. Buckner, Richard Longland, Lori Downen, J. M. Cesaratto, Christian Iliadis, K. J. Kelly, C. Howard, Arthur E Champagne
Publikováno v:
Physical Review C. 91
Hydrogen burning of the oxygen isotopes takes place in low-mass stars, asymptotic giant branch stars, and classical novae. Observations of oxygen elemental and isotopic abundances in stellar spectra or in presolar grains provide strong constraints fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2f7f16a810c4cd289e8150261f6f846
https://doi.org/10.1103/physrevc.91.015812
https://doi.org/10.1103/physrevc.91.015812
Classical novae are caused by mass transfer episodes from a main sequence star onto a white dwarf via Roche lobe overflow. This material forms an accretion disk around the white dwarf. Ultimately, a fraction of this material spirals in and piles up o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eae0fc1cd282c94ce485c483d26274dc