Pair production in inhomogeneous electric fields with phase modulation
- URL: http://arxiv.org/abs/2206.04228v1
- Date: Thu, 9 Jun 2022 02:31:00 GMT
- Title: Pair production in inhomogeneous electric fields with phase modulation
- Authors: Li-Na Hu, Orkash Amat, Lie-Juan Li, Melike Mohamedsedik and B. S. Xie
- Abstract summary: It is found that the momentum spectrum (the reduced particle number) is more sensitive to the modulated amplitude (modulated frequency) of the phase.
For high central frequency field, an extremely good symmetry in momentum spectrum is found while it is destroyed severely when the modulated amplitude becomes large.
Two interesting features are revealed for the reduced particle number, i.e., the optimal modulation parameters are found and the same particle number can be got through different set of modulation parameters.
- Score: 0.7593468800059947
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Electron-positron pair production is investigated in spatial inhomogeneous
electric fields with high or/and low central frequency as well as sinusoidal
phase modulation. It is found that the momentum spectrum (the reduced particle
number) is more sensitive to the modulated amplitude (modulated frequency) of
the phase. The stronger the modulation parameters are applied, the more
remarkable the interference effect in momentum spectrum occur. In particular,
for high central frequency field, an extremely good symmetry in momentum
spectrum is found while it is destroyed severely when the modulated amplitude
becomes large. The reduced particle number can be also enhanced greatly at
about a few times or/and one order by the modulation parameters. Moreover, the
effect of spatial scales on the reduced particle number are examined carefully
and found that it increases rapidly at small spatial scales, while it tends to
be a constant at large spatial scales. Two interesting features are revealed
for the reduced particle number, i.e., the optimal modulation parameters are
found and the same particle number can be got through different set of
modulation parameters. The latter findings is important because one can choose
different ways of phase modulation to realize the required pair number even if
for the optimal pair production.
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