Investigation of QED Effects With Varying Z in Thin Foil Targets

Chintalwad, S. and Krishnamurthy, S. and Ramakrishna, B. and Morris, S. and Ridgers, C. (2021) Investigation of QED Effects With Varying Z in Thin Foil Targets. IEEE Transactions on Plasma Science, 49 (2). pp. 573-577. ISSN 0093-3813

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Abstract

Quantum electrodynamics (QED) effects in intense laser-plasma interaction were investigated using particle-in-cell (PIC) simulations, specifically the generation of electron-positron pairs. Linearly polarized intense laser pulses were used to irradiate a thin foil (1-\mu \text{m} ) with an intensity of 4\times 10^{23} W cm-2. A scan of targets with varying Z (Al, Cu, and Au) is investigated to determine the effect of target Z /density on electron-positron pair production. The total number of pairs created for Al and Cu targets is 1014 and 1013, respectively. In the case of Au, we did not observe any pair production to occur. We have also calculated the variation in electron energy in these targets. The results indicate that target Z plays a very important role with the laser interaction in the pair production process, which will be explained in this article.

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IITH Creators:

IITH Creators	ORCiD
Ramakrishna, B.	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Electron energies; Electron positron pair production; Electron-positron pairs; Intense laser pulse; Intense laser-plasma interactions; Linearly polarized; Particle-in-cell simulations; Quantum electrodynamics;Aluminum alloys; Electrodynamics; Electron energy levels; Laser beams; Laser produced plasmas; Photons; Plasma simulation; Positrons

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

08 Jul 2021 07:08

Last Modified:

08 Jul 2021 07:08

URI:

http://raiithold.iith.ac.in/id/eprint/8175