Affiliation:
1. Key Laboratory of Plasma Physics, Research Center of Laser Fusion, CAEP , Mianshan Rd 64, 621900 Mianyang, Sichuan, China
Abstract
Effects of multiple nonlinear Compton scattering on electrons in ultra-strong fields are described using analytic formulas similar to those in the theory of multiple bremsstrahlung. Based on these analytic formulas, a new pure quantum effect of multiple nonlinear Compton scattering called quantum peak splitting is identified: the electron peak splits into two when the average number of nonlinear Compton scatterings per electron passes a threshold of 5.1 and is below 9. Quantum peak splitting stems from the discreteness of quantum radiation reaction, with one of the split peaks being formed by electrons emitting zero to three times and the other by electrons emitting four or more times. This effect provides a new mechanism for the formation of electron peaks, imposes a new beamstrahlung limit on future colliders, and corrects the picture of quantum radiation reaction. Experiments can be performed on lasers with intensities ≳1021 W/cm2, which are reachable on PW-scale facilities.
Funder
National Key Proram for Science and Technology Research and Development
Laser Fusion Research Center Funds for Young Talents
National Natural Science Foundation of China
Subject
Electrical and Electronic Engineering,Nuclear Energy and Engineering,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics