Laser acceleration of protons using multi-ion plasma gaseous targets

Tung Chang Liu, Xi Shao, Chuan Sheng Liu, Bengt Eliasson, W. T. Hill, Jyhpyng Wang, Shih Hung Chen

研究成果: 雜誌貢獻期刊論文同行評審

12 引文 斯高帕斯(Scopus)

摘要

We present a theoretical and numerical study of a novel acceleration scheme by applying a combination of laser radiation pressure and shielded Coulomb repulsion in laser acceleration of protons in multi-species gaseous targets. By using a circularly polarized CO2 laser pulse with a wavelength of 10 μm - much greater than that of a Ti: Sapphire laser - the critical density is significantly reduced, and a high-pressure gaseous target can be used to achieve an overdense plasma. This gives us a larger degree of freedom in selecting the target compounds or mixtures, as well as their density and thickness profiles. By impinging such a laser beam on a carbon-hydrogen target, the gaseous target is first compressed and accelerated by radiation pressure until the electron layer disrupts, after which the protons are further accelerated by the electron-shielded carbon ion layer. An 80 MeV quasi-monoenergetic proton beam can be generated using a half-sine shaped laser beam with a peak power of 70 TW and a pulse duration of 150 wave periods.

原文???core.languages.en_GB???
文章編號023018
期刊New Journal of Physics
17
DOIs
出版狀態已出版 - 4 2月 2015

指紋

深入研究「Laser acceleration of protons using multi-ion plasma gaseous targets」主題。共同形成了獨特的指紋。

引用此