Speaker
Description
Recent research into the interaction between high-intensity beams and surface plasmas has revealed the significant potential of generating extremely strong (~TV/m) fields for particle acceleration and radiation production. This new approach has emerged by overcoming several challenges in beam-solid interactions. It therefore holds great promise for reshaping the research direction of large-scale facilities pursuing the energy frontier and micro-scale facilities requiring great flexibility. At the same time, this research can provide new insights into the extremely complex nonlinear dynamics of surface plasmons (SPs) in strong fields and a new, unexplored regime of plasma-based particle acceleration.
In this study, we theoretically investigate the high-intensity laser- or beam-driven excitation of relativistic surface plasmons on the micro-scaled surfaces of structured nanomaterials, such as vertically aligned carbon nanotube (VACNT) forests. Leaky and bubble wakefields can be generated with amplitudes exceeding 400 TV/m and high energy efficiency for both electron and positron acceleration. By investigating SP mode selection on cylindrical surfaces, we have proposed a new principle for coherent radiation generation that differs fundamentally from traditional superradiance. Our research offers a new approach to the development of ultrahigh-gradient and ultra-compact particle accelerators, which could transform medicine and materials science.
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