Accelerating gradient improvement from hole-boring to light-sail stage using shape-tailored laser front

The accelerating gradient of a proton beam is a crucial factor for the stable radiation pressure acceleration, because quickly accelerating protons into the relativistic region may reduce the multidimensional instability grow to a certain extent. In this letter, a shape-tailored laser is designed to...

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Veröffentlicht in:Physics of plasmas 2017-01, Vol.24 (1)
Hauptverfasser: Wang, W. P., Shen, B. F., Xu, Z. Z.
Format: Artikel
Sprache:eng
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Zusammenfassung:The accelerating gradient of a proton beam is a crucial factor for the stable radiation pressure acceleration, because quickly accelerating protons into the relativistic region may reduce the multidimensional instability grow to a certain extent. In this letter, a shape-tailored laser is designed to accelerate the protons in a controllable high accelerating gradient in theory. Finally, a proton beam in the gigaelectronvolt range with an energy spread of ∼2.4% is obtained in one-dimensional particle-in-cell simulations. With the future development of the high-intense laser, the ability to accelerate a high energy proton beam using a shape-tailored laser will be important for realistic proton applications, such as fast ignition for inertial confinement fusion, medical therapy, and proton imaging.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4973330