Michael E. Donovan

ORCID: 0000-0003-2061-4002
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About
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Research Areas
  • Laser-induced spectroscopy and plasma
  • Laser-Plasma Interactions and Diagnostics
  • Nuclear Issues and Defense
  • Diamond and Carbon-based Materials Research
  • Planetary Science and Exploration
  • Radiation Therapy and Dosimetry
  • Effects of Radiation Exposure

An intense laser pulse focused onto a plasma can excite nonlinear waves. Under appropriate conditions, electrons from the background are trapped in wave and accelerated to ultra-relativistic velocities. This scheme is called wakefield accelerator. In this work, we present results acceleration experiment using petawatt-class wakefields as well nanoparticles assist injection of into accelerating phase wakefields. We find that 10-cm-long, nanoparticle-assisted accelerator generate 340 pC, 10 ±...

10.1063/5.0161687 article EN cc-by Matter and Radiation at Extremes 2023-11-15

Ionizing radiation is one of the many potential hazards man must face as he endeavors to conquer cosmic space. The greatest source this hazard in our solar system sun, which periodically bombards us with highly energetic protons and a particles. In most instances dose from flare particles quite small. However, during periods maximum activity can become very intense dangerous animal. Freier Webber (1) have recently reported that flares may equal for energy above certain value, flux heavier...

10.2307/3583725 article EN Radiation Research Supplement 1967-01-01

In an electron wakefield accelerator, intense laser pulse or charged particle beam excites plasma waves. Under proper conditions, electrons from the background are trapped in wave and accelerated to ultra-relativistic velocities. We present recent results a proof-of-principle acceleration experiment that reveal unique synergy between laser-driven particle-driven accelerator: high-charge laser-wakefield bunch can drive its own while simultaneously drawing energy via direct acceleration. This...

10.48550/arxiv.2207.11492 preprint EN cc-by arXiv (Cornell University) 2022-01-01
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