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Title: The sources of super-high energetic electron at relativistic circularly-polarized laser-solid interactions in the presence of large scale pre-plasmas

Journal Article · · Physics of Plasmas
DOI: https://doi.org/10.1063/1.4972539 · OSTI ID:1465376
 [1];  [2];  [3];  [3]
  1. Chinese Academy of Sciences (CAS), Shanghai (China); Univ Calif San Diego, La Jolla, CA 92093 USA
  2. Univ. of California-San Diego, La Jolla, CA (United States)
  3. Chinese Academy of Sciences (CAS), Shanghai (China)

Here, the two stage electron acceleration model is extended to investigate the sources of super-hot electrons at intense circularly polarized (CP) laser solid interactions. It is found that in the presence of large scale pre-formed plasmas, super-high energetic electrons can be generated. For laser of intensity 1020 W/cm2 and pre-plasma of scale-length 10 μm, the cut-off energy of electrons by CP laser can be as high as 120 MeV compared with 100 MeV by linearly polarized laser. This unexpected acceleration can be also explained by the two-stage acceleration model. The envelop modulation of reflected CP laser is figured out, and a modified scaling law of the maximal-possible energy gain when including the modulation effect is obtained.

Research Organization:
Univ. of California San Diego, La Jolla, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
NA0001858
OSTI ID:
1465376
Alternate ID(s):
OSTI ID: 1337434
Journal Information:
Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 12 Vol. 23; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Characteristics of X/γ-ray radiations by intense laser interactions with high-Z solids: The role of bremsstrahlung and radiation reactions text January 2018
Particle-in-cell simulations of laser–plasma interactions at solid densities and relativistic intensities: the role of atomic processes journal January 2018
High-order implicit particle-in-cell method for plasma simulations at solid densities journal July 2019
Particle-in-cell simulations of laser–plasma interactions at solid densities and relativistic intensities: the role of atomic processes text January 2018
Magetostatic amplifier with tunable maximum by twisted-light plasma interactions text January 2017
Magetostatic amplifier with tunable maximum by twisted-light plasma interactions journal August 2017
The controllable electron-heating by external magnetic fields at relativistic laser-solid interactions in the presence of large scale pre-plasmas journal April 2017
Effects of resistive magnetic instability and electron refluxing on fast electron dynamics and bremsstrahlung radiation characteristics in relativistic laser-solid interaction journal August 2019
Characteristics of X/γ-ray radiations by intense laser interactions with high-Z solids: The role of bremsstrahlung and radiation reactions journal November 2018