Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Downer, Michael"'
Autor:
Shafiei, Farbod, Masir, Massoud R., Orzali, Tommaso, Vert, Alexey, Wong, Man Hoi, Bersuker, Gennadi, Downer, Michael C.
In disordered media light can be localized in the spaces between scattering sites which average to an optical mean free path (MFP). However the fundamental question of the smallest MFP that can support Anderson localization of light remains unanswere
Externí odkaz:
http://arxiv.org/abs/2211.02808
Autor:
Aniculaesei, Constantin, Ha, Thanh, Yoffe, Samuel, McCary, Edward, Spinks, Michael M, Quevedo, Hernan J., Labun, Lance, Labun, Ou Z., Sain, Ritwik, Hannasch, Andrea, Zgadzaj, Rafal, Pagano, Isabella, Franco-Altamirano, Jose A., Ringuette, Martin L., Gaul, Erhart, Luedtke, Scott V., Tiwari, Ganesh, Ersfeld, Bernhard, Brunetti, Enrico, Ruhl, Hartmut, Ditmire, Todd, Bruce, Sandra, Donovan, Michael E., Jaroszynski, Dino A., Downer, Michael C., Hegelich, Bjorn Manuel
Publikováno v:
Matter Radiat. Extremes 9, 014001 (2024)
In an electron wakefield accelerator, an intense laser pulse or charged particle beam excites plasma waves. Under proper conditions, electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic velocities.
Externí odkaz:
http://arxiv.org/abs/2207.11492
Autor:
Kiani, Leily, Zhou, Tong, Bahk, Seung-Whan, Bromage, Jake, Bruhwiler, David, Campbell, E. Michael, Chang, Zenghu, Chowdhury, Enam, Downer, Michael, Du, Qiang, Esarey, Eric, Galvanauskas, Almantas, Galvin, Thomas, Hafner, Constantin, Hoffmann, Dieter, Joshi, Chan, Kanskar, Manoj, Lu, Wei, Menoni, Carmen, Messerly, Michael, Mirov, Sergey B., Palmer, Mark, Pogorelsky, Igor, Polyanskiy, Mikhail, Power, Erik, Reagan, Brendan, Rocca, Jorge, Rothenberg, Joshua, Schmidt, Bruno E., Sistrunk, Emily, Spinka, Thomas, Tochitsky, Sergei, Vafaei-Najafabadi, Navid, van Tilborg, Jeroen, Wilcox, Russell, Zuegel, Jonathan, Geddes, Cameron
Large scale laser facilities are needed to advance the energy frontier in high energy physics and accelerator physics. Laser plasma accelerators are core to advanced accelerator concepts aimed at reaching TeV electron electron colliders. In these fac
Externí odkaz:
http://arxiv.org/abs/2204.10774
Autor:
Power, John, Clarke, Christine, Downer, Michael, Esarey, Eric, Geddes, Cameron, Hogan, Mark J., Hoffstaetter, Georg Heinz, Jing, Chunguang, Nagaitsev, Sergei, Palmer, Mark, Piot, Philippe, Schroeder, Carl, Umstadter, Donald, Vafaei-Najafabadi, Navid, Valishev, Alexander, Willingale, Louise, Yakimenko, Vitaly
This is the Snowmass Whitepaper on Beam Test Facilities for R&D in Accelerator Science and Technologies and it is submitted to two topical groups in the Accelerator Frontier: AF1 and AF6.
Comment: contribution to Snowmass 2021
Comment: contribution to Snowmass 2021
Externí odkaz:
http://arxiv.org/abs/2203.11290
Autor:
Furey, Brandon J., Stacy, Benjamin J., Shah, Tushti, Barba-Barba, Rodrigo M., Carriles, Ramon, Bernal, Alan, Mendoza, Bernardo S., Korgel, Brian A., Downer, Michael C.
Two-photon excitation in the near-infrared (NIR) of colloidal nanocrystalline silicon quantum dots (nc-SiQDs) with photoluminescence also in the NIR has the potential to open up new opportunities in the field of deep biological imaging. Spectra of th
Externí odkaz:
http://arxiv.org/abs/2112.12241
Autor:
Shafiei, Farbod, Downer, Michael C.
Understanding light-matter interaction at the nanoscale by observation of fine details of electromagnetic fields is achieved by bringing nanoscale probes into the nearfield of light sources, capturing information that is lost in the far field. Althou
Externí odkaz:
http://arxiv.org/abs/2109.11033
Autor:
Furey, Brandon J, Barba-Barba, Rodrigo M., Carriles, Ramon, Bernal, Alan, Mendoza, Bernardo S., Downer, Michael C.
Spectra of the degenerate two-photon absorption coefficient $\beta(\omega)$, anisotropy parameter $\sigma(\omega)$, and dichroism parameter $\delta(\omega) = \big[\sigma(\omega) + 2\eta(\omega)\big]/2$ of crystalline 110-cut GaAs, GaP, and Si at 300
Externí odkaz:
http://arxiv.org/abs/2102.07072
Autor:
Kumar, Prabhat, Yu, Kwangmin, Zgadzaj, Rafal, Downer, Michael, Petrushina, Irina, Samulyak, Roman, Litvinenko, Vladimir, Vafaei-Najafabadi, Navid
Long wavelength infrared (LWIR) laser driven plasma wakefield accelerators are investigated here in the self-modulated laser wakefield acceleration (SM-LWFA) and blowout regimes using 3D Particle-in-Cell simulations. The simulation results show that
Externí odkaz:
http://arxiv.org/abs/2008.12157
Autor:
Shafiei, Farbod, Orzali, Tommaso, Vert, Alexey, Miri, Mohammad-Ali, Hung, P. Y., Wong, Man Hoi, Alù, Andrea, Bersuker, Gennadi, Downer, Michael C.
Hetero-epitaxial crystalline films underlie many electronic and optical technologies but are prone to forming defects at their hetero-interfaces. Atomic-scale defects such as threading dislocations that propagate into a film impede the flow of charge
Externí odkaz:
http://arxiv.org/abs/2007.01427
We combined optical and atomic force microscopy to observe morphology and kinetics of microstructures that formed at free surfaces of unmodified pavement-grade 64-22 asphalt binders upon cooling from 150 $^{\circ}$C to room temperature (RT) at 5 $^{\
Externí odkaz:
http://arxiv.org/abs/1905.12093