Photon emission enhancement studies from the interaction of ultraintense laser pulses with shaped targets

S. Chintalwad, S. Krishnamurthy, B. Ramakrishna*, C. P. Ridgers

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We study the photon emission by bremsstrahlung and nonlinear Compton scattering from interaction of ultra-intense laser pulses with cone target and flat foil using particle-in-cell simulations. The simulations are performed for laser pulses interacting with Al and Au targets. The strength of the two mechanisms of photon emission from bremsstrahlung and nonlinear Compton scattering are compared. When an ultra-intense (I>1022W/cm2) laser interacts with a cone and a foil target, photon emission by bremsstrahlung is found to be comparable to that from nonlinear Compton scattering. The obtained electron energy as well as the energy and number of photons emitted were found to be higher in case of cone shaped target compared with that of a foil target. The enhanced photon emission from cone shaped target is attributed to the guiding or collimation of hot electrons towards the cone tip from the self-generated magnetic field and electrostatic field along the cone surface which pushes the hot electrons towards the tip.

Original languageEnglish
Article number025205
Number of pages7
Journal Physical Review E
Issue number2
Publication statusPublished - 22 Feb 2022

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Funding Information:
We wish to acknowledge the epoch code used in this research which was developed by UK Engineering and Physics Sciences Research Council Grants No. EP/G054950/1, No. EP/G056803/1, No. EP/G055165/1 and No. EP/M022463/1. The authors also acknowledge funding from CSIR and Imprint Projects (IMP/2019/000275).

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