Method for laser accelerating ion

Abstract

The invention provides a method of laser ion acceleration, belonging to the technical field of ion acceleration. The method of laser ion acceleration includes: adopting circularly polarized lasers to bombard a monolayer target which is a film containing ions to be accelerated; or adopting circularly polarized lasers to bombard high-density gas containing ions to be accelerated which is ejected out through a nozzle. The invention can greatly improve the accelerating gradient and accelerating length of irons, and meanwhile the quality of beam obtained by the acceleration can compare to common radio frequency accelerators.

Description

technical field [0001] The invention relates to the technical field of ion acceleration, in particular to a method for realizing ion acceleration by using laser. Background technique [0002] Conventional ion acceleration is usually achieved using radio frequency accelerator technology. However, the ion acceleration equipment mainly based on the radio frequency accelerator is bulky, expensive to manufacture, and expensive to maintain and operate. The cost of large-scale ion accelerators such as GSI in Germany and HIMAC in Japan that have been put into operation is about 1 billion euros, and the cost of heavy ion accelerators in Lanzhou Institute of Near Physics and Technology in my country is also more than several hundred million yuan. Using the electromagnetic field of ultra-strong laser to accelerate ions can greatly increase the acceleration gradient of ions. Existing methods of using lasers to accelerate ions usually use linearly polarized lasers ( ...

AI Technical Summary

Problems solved by technology

Existing methods of using lasers to accelerate ions usually use linearly polarized lasers ( E = E L ( x ) sin ( ω L t ) y ^ ) , and a double-layer solid target is used, that is, the first layer is a heavy metal target with a thickness of several microns, and the second layer is an organic adhesion layer containing hydrogen or other light elements. The electrons shot from the metal target can accelerate the second layer. Hydrogen ions or other lighter elements, where the energy of the laser will be mainly used for electron heating, the resulting accelerating electric field strength is limited, so the ion energy obtained is limited, and the beam quality is poor

At present, with the power level and technology of the existing ultra-intensive lasers, the accelerated ion energy is low, the beam energy is large, and the beam flux is low.

Images