The 6th International Conference on Matter and Radiation at Extremes (ICMRE2023)

274 / 2023-04-24 15:33:34

Simulation Study of a Bright Attosecond gamma-ray Source Generation by Irradiating an Intense Laser on a Cone Target

Fundamental Physics at Extreme Light > Radiation source-poster

The interaction between an ultrastrong laser and a cone-like target is an efficient approach

to generate high-power radiations such as attosecond pulses and terahertz waves. The objective is to

study the gamma-ray generation under this configuration with the help of 2D particle-in-cell simulations.

It is deciphered that electrons experience three stages, including injection, acceleration and scattering,

to emit high-energy photons via nonlinear Compton scattering (NCS). These spatial-separated

attosecond gamma-ray pulses own high peak brilliance (\(>10^{22}photons/(s\cdot mm^2\cdot mrad^2 \cdot 0.1\%BW)\)) and

high energy (6 MeV) under the case of normalized laser intensity \(a_0=30(I=2\times 10^{21}W/cm^2)\)

In addition, the cone target turns out to be an order of magnitude more efficient in energy transfer

compared to a planar one.