Polarity reversal of wakefields driven by ultrashort pulse laser.
Phys Rev E
; 102(5-1): 053216, 2020 Nov.
Article
em En
| MEDLINE
| ID: mdl-33327156
ABSTRACT
Using an analytical model and computer simulation, we show that the wakefield driven by an ultrashort laser pulse in high-density plasma periodically reverses its polarity due to the carrier-envelope phase shift of the driver. The wakefield polarity reversal occurs on spatial scales shorter than the typical length considered for electron acceleration with the laser-wakefield mechanism. Consequently, the energies of accelerated electrons are significantly affected. The results obtained are important for the laser-wakefield acceleration under the conditions relevant to present-day high-repetition-rate laser systems.
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01-internacional
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MEDLINE
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En
Ano de publicação:
2020
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Article