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内容記述 |
Laser driven ion acceleration has attracted many interests for its possibility to generate high flux pulse ions such as protons and deuterons, which have been applied to some fields such as Laser Driven Neutron Source . Recently, the max energy of laser accelerated ions has broken the wall of 100 MeV for protons. However, the generation of monoenergetic ions with high energies is still a challenging subject. In this work, we propose a new method for generating quasi-monoenergetic deuterons with a in-situ D2O-deposited target. Deuterons with an energy spread lower than 5% are accelerated by this method employing a 1019W/cm2 laser. In addition, by adjusting the laser irradiation conditions, quasi-monoenergetic deuterons with energies of up to 50 MeV are accelerated with a half angle around 1.5° at the laser irradiation side. The proposed method could be expanded for accelerating other ions with quasi-monoenergy, such as tritons with in-situ T2O-deposited targets. |
