Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Vavrek, Jayson R."'
Autor:
Vavrek, Jayson R, Zhou, Luozhong, Boverhof, Joshua, Heymann, Elisa R, Miller, Barton P, Peisert, Sean
In future nuclear arms control treaties, it will be necessary to authenticate the hardware and software components of verification measurement systems, i.e., to ensure these systems are functioning as intended and have not been tampered with by malic
Externí odkaz:
http://arxiv.org/abs/2404.05946
Autor:
Bandstra, Mark S., Hellfeld, Daniel, Lee, Jaewon, Quiter, Brian J., Salathe, Marco, Vavrek, Jayson R., Joshi, Tenzing H. Y.
The ability to formulate maps of minimum detectable activities (MDAs) that describe the sensitivity of an ad hoc measurement that used one or more freely moving radiation detector systems would be significantly beneficial for the conduct and understa
Externí odkaz:
http://arxiv.org/abs/2208.03321
Autor:
Vavrek, Jayson R., Hines, C. Corey, Bandstra, Mark S., Hellfeld, Daniel, Heine, Maddison A., Heiden, Zachariah M., Mann, Nick R., Quiter, Brian J., Joshi, Tenzing H. Y.
We demonstrate a method for using arrays of point sources that emulate -- when measured from a standoff of at least several meters -- distributed gamma-ray sources, and present results using this method from outdoor aerial measurements of several pla
Externí odkaz:
http://arxiv.org/abs/2208.02899
Autor:
Hellfeld, Daniel, Bandstra, Mark S., Vavrek, Jayson R., Gunter, Donald L., Curtis, Joseph C., Salathe, Marco, Pavlovsky, Ryan, Negut, Victor, Barton, Paul J., Cates, Joshua W., Quiter, Brian J., Cooper, Reynold J., Vetter, Kai, Joshi, Tenzing H. Y.
Publikováno v:
Scientific Reports, 11, 20515 (2021)
The ability to map and estimate the activity of radiological source distributions in unknown three-dimensional environments has applications in the prevention and response to radiological accidents or threats as well as the enforcement and verificati
Externí odkaz:
http://arxiv.org/abs/2107.04080
Autor:
Vavrek, Jayson R., Hellfeld, Daniel, Bandstra, Mark S., Negut, Victor, Meehan, Kathryn, Vanderlip, William J., Cates, Joshua W., Pavlovsky, Ryan, Quiter, Brian J., Cooper, Reynold J., Joshi, Tenzing H. Y.
We present an experimental demonstration of Additive Point Source Localization (APSL), a sparse parametric imaging algorithm that reconstructs the 3D positions and activities of multiple gamma-ray point sources. Using a handheld gamma-ray detector ar
Externí odkaz:
http://arxiv.org/abs/2009.07303
Publikováno v:
NIM B 459 188-195 (2019)
G4NRF is a simulation module for modeling nuclear resonance fluorescence (NRF) interactions in the Geant4 framework. In this work, we validate G4NRF against both absolute and relative measurements of three NRF interactions near 2.2 MeV in $^{238}$U a
Externí odkaz:
http://arxiv.org/abs/1807.02596
Publikováno v:
NIM B 433 34-42 (2018)
Nuclear resonance fluorescence (NRF) is a photonuclear interaction that enables highly isotope-specific measurements in both pure and applied physics scenarios. High-accuracy design and analysis of NRF measurements in complex geometries is aided by M
Externí odkaz:
http://arxiv.org/abs/1807.01701
Publikováno v:
Proc. Natl. Acad. Sci. U.S.A. 115 (17) 4363-4368 (2018)
Future nuclear arms reduction efforts will require technologies to verify that warheads slated for dismantlement are authentic without revealing any sensitive weapons design information to international inspectors. Despite several decades of research
Externí odkaz:
http://arxiv.org/abs/1712.02904
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Akademický článek
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