Space-Time Structured Plasma Waves.
Phys Rev Lett
; 132(9): 095101, 2024 Mar 01.
Article
en En
| MEDLINE
| ID: mdl-38489653
ABSTRACT
Electrostatic waves play a critical role in nearly every branch of plasma physics from fusion to advanced accelerators, to astro, solar, and ionospheric physics. The properties of planar electrostatic waves are fully determined by the plasma conditions, such as density, temperature, ionization state, or details of the distribution functions. Here we demonstrate that electrostatic wave packets structured with space-time correlations can have properties that are independent of the plasma conditions. For instance, an appropriately structured electrostatic wave packet can travel at any group velocity, even backward with respect to its phase fronts, while maintaining a localized energy density. These linear, propagation-invariant wave packets can be constructed with or without orbital angular momentum by superposing natural modes of the plasma and can be ponderomotively excited by space-time structured laser pulses like the flying focus.
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Banco de datos:
MEDLINE
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En
Revista:
Phys Rev Lett
/
Phys. rev. lett
/
Physical review letters
Año:
2024
Tipo del documento:
Article
País de afiliación:
Estados Unidos