Zobrazeno 1 - 10
of 223
pro vyhledávání: '"George, Kevin"'
Autor:
Smith, Joseph R., Orban, Chris, Morrison, John T., George, Kevin M., Ngirmang, Gregory K., Chowdhury, Enam A., Roquemore, W. Mel
The development of ultra-intense laser-based sources of high energy ions is an important goal, with a variety of potential applications. One of the barriers to achieving this goal is the need to maximize the conversion efficiency from laser energy to
Externí odkaz:
http://arxiv.org/abs/2005.07746
Autor:
Ngirmang, Gregory K., Morrison, John T., George, Kevin M., Smith, Joseph R., Frische, Kyle D., Orban, Chris, Chowdhury, Enam A., Roquemore, W. Mel
When a relativistic intensity laser interacts with the surface of a solid density target, suprathermal electron currents are subject to Weibel instability filamentation when propagating through the thermal population of the bulk target. We present ti
Externí odkaz:
http://arxiv.org/abs/1910.12940
Publikováno v:
In Tetrahedron 3 August 2023 142
Autor:
Smith, Joseph R., Orban, Chris, Ngirmang, Gregory K., Morrison, John T., George, Kevin M., Chowdhury, Enam A., Roquemore, W. M.
We use particle-in-cell (PIC) simulations and simple analytic models to investigate the laser-plasma interaction known as ponderomotive steepening. When normally incident laser light reflects at the critical surface of a plasma, the resulting standin
Externí odkaz:
http://arxiv.org/abs/1905.00888
Autor:
Snyder, Joseph, Ji, Liangliang, George, Kevin M., Willis, Christopher, Cochran, Ginevra E., Daskalova, Rebecca, Handler, Abraham, Rubin, Trevor, Poole, Patrick L., Nasir, Derek, Zingale, Anthony, Chowdhury, Enam, Shen, Baifei, Schumacher, Douglass W.
We present an experimental demonstration of the efficient acceleration of electrons beyond 60 MeV using micro-channel plasma targets. We employed a high-contrast, 2.5 J, 32 fs short pulse laser interacting with a 5 \mu m inner diameter, 300 \mu m lon
Externí odkaz:
http://arxiv.org/abs/1901.00475
Autor:
George, Kevin Mitchell
In the interaction of high intensity (> 10^18 W/cm^2), ultrashort (< 1 ps) laser pulses with solid targets, the laser couples energy into the target through a population of energetic electrons. An electrostatic sheath field is formed along the target
Automatic pathological pulmonary lobe segmentation(PPLS) enables regional analyses of lung disease, a clinically important capability. Due to often incomplete lobe boundaries, PPLS is difficult even for experts, and most prior art requires inference
Externí odkaz:
http://arxiv.org/abs/1708.04503
Publikováno v:
Proc. MICCAI (2017); pp 621-629
Pathological lung segmentation (PLS) is an important, yet challenging, medical image application due to the wide variability of pathological lung appearance and shape. Because PLS is often a pre-requisite for other imaging analytics, methodological s
Externí odkaz:
http://arxiv.org/abs/1706.03702
Autor:
Blakeslee, Jennifer E., Powers, Laurie E., Geenen, Sarah, Schmidt, Jessica, Nelson, May, Fullerton, Ann, George, Kevin, McHugh, Elizabeth, Bryant, Mary
Publikováno v:
In Children and Youth Services Review December 2020 119
Autor:
Sedrak, Mina S., Mohile, Supriya G., Sun, Virginia, Sun, Can-Lan, Chen, Bihong T., Li, Daneng, Wong, Andrew R., George, Kevin, Padam, Simran, Liu, Jennifer, Katheria, Vani, Dale, William
Publikováno v:
In Journal of Geriatric Oncology March 2020 11(2):327-334