Effect of ion transfer on energy gain of ultra-intense crossing laser beams. (21st September 2020)

• Record Type: Journal Article
• Authors: Xie, Duan; Jiao, Jin-long; Zhuo, Hongbin; Zhu, Peidong; Dong, And Hu
• Is Part Of: Laser physics. Volume 30:Number 10(2020)
• Publication Date: 2020-09-21
• Subjects: ion transfer -- ponderomotive force -- plasma electron thermal pressure -- cross-beam energy transfer -- ultra-intense laser; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1555-6611/abb315
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: An interesting phenomenon called 'ion transfer', which may obviously affect the energy gain of cross-beams via changing the momentum and density of plasmas, is demonstrated. The increment of plasma momentum induced by it will be proportional to the transferred energy of the cross-beam according to the momentum conservation law. In addition, the 'ion transfer'-induced variation of plasma density can be attributed to the balance of the ponderomotive force of the cross-beam and the plasma electron thermal pressure, which is proportional to the total intensity of the cross-beam, while inversely proportional to the plasma electron temperature. These results may make up for the deficiency of the existing linear coupled-mode-equations when investigating the cross-beam energy transfer under the action of ultra-intense laser.