Journal
PHYSICAL REVIEW E
Volume 93, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.93.043207
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Funding
- National Natural Science Foundation of China [91230205, 11575031, 11575298, 11175026]
- National Basic Research 973 Project [2013CB834100]
- National High-Tech 863 Project
- Special Program for Applied Research on Super Computation of NSFC-Guangdong Joint Fund
- Thousand Young Talents Program of China
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Energetic electron acceleration processes in a plasma hollow tube irradiated by an ultraintense laser pulse are investigated. It is found that the longitudinal component of the laser field is much enhanced when a linear polarized Gaussian laser pulse propagates through the plasma tube. This longitudinal field is of pi/2 phase shift relative to the transverse electric field and has a pi phase interval between its upper and lower parts. The electrons in the plasma tube are first pulled out by the transverse electric field and then trapped by the longitudinal electric field. The trapped electrons can further be accelerated to higher energy in the presence of the longitudinal electric field. This acceleration mechanism is clearly illustrated by both particle-in-cell simulations and single particle modelings.
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