Three-dimensional simulation of laser–plasma-based electron acceleration

Pramana

B S Rao²  A Upadhyay1²  K Patel¹  P D Gupta²  P A Naik² 

[1] Laser & Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 400 085, India$$;Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India$$

关键词: Laser–plasma simulation;    PIC code;    electron acceleration.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

A sequential three-dimensional (3D) particle-in-cell simulation code PICPSI-3D with a user friendly graphical user interface (GUI) has been developed and used to study the interaction of plasma with ultrahigh intensity laser radiation. A case study of laser–plasma-based electron acceleration has been carried out to assess the performance of this code. Simulations have been performed for a Gaussian laser beam of peak intensity 5 × 1019 W/cm2 propagating through an underdense plasma of uniform density 1 × 1019 cm-3, and for a Gaussian laser beam of peak intensity 1.5 × 1019 W/cm2 propagating through an underdense plasma of uniform density 3.5 × 1019 cm-3. The electron energy spectrum has been evaluated at different time-steps during the propagation of the laser beam. When the plasma density is 1 × 1019 cm-3, simulations show that the electron energy spectrum forms a monoenergetic peak at ∼ 14 MeV, with an energy spread of ± 7 MeV. On the other hand, when the plasma density is 3.5 × 1019 cm-3, simulations show that the electron energy spectrum forms a monoenergetic peak at ∼ 23 MeV, with an energy spread of ± 7.5 MeV.

【 授权许可】

Unknown