TY - JOUR
T1 - Strongly Enhanced Stimulated Brillouin Backscattering in an Electron-Positron Plasma
AU - Edwards, Matthew R.
AU - Fisch, Nathaniel J.
AU - Mikhailova, Julia M.
N1 - Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/1/8
Y1 - 2016/1/8
N2 - Stimulated Brillouin backscattering of light is shown to be drastically enhanced in electron-positron plasmas, in contrast to the suppression of stimulated Raman scattering. A generalized theory of three-wave coupling between electromagnetic and plasma waves in two-species plasmas with arbitrary mass ratios, confirmed with a comprehensive set of particle-in-cell simulations, reveals violations of commonly held assumptions about the behavior of electron-positron plasmas. Specifically, in the electron-positron limit three-wave parametric interaction between light and the plasma acoustic wave can occur, and the acoustic wave phase velocity differs from its usually assumed value.
AB - Stimulated Brillouin backscattering of light is shown to be drastically enhanced in electron-positron plasmas, in contrast to the suppression of stimulated Raman scattering. A generalized theory of three-wave coupling between electromagnetic and plasma waves in two-species plasmas with arbitrary mass ratios, confirmed with a comprehensive set of particle-in-cell simulations, reveals violations of commonly held assumptions about the behavior of electron-positron plasmas. Specifically, in the electron-positron limit three-wave parametric interaction between light and the plasma acoustic wave can occur, and the acoustic wave phase velocity differs from its usually assumed value.
UR - http://www.scopus.com/inward/record.url?scp=84954458268&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84954458268&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.116.015004
DO - 10.1103/PhysRevLett.116.015004
M3 - Article
C2 - 26799025
AN - SCOPUS:84954458268
SN - 0031-9007
VL - 116
JO - Physical review letters
JF - Physical review letters
IS - 1
M1 - 015004
ER -