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On the Schwinger limit attainability with extreme power lasers

On the Schwinger limit attainability with extreme power lasers

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The number of electron-positron pairs produced in<br />

<strong>the</strong> focus of a single pulse or two colliding pulses<br />

I, W/cm 2 E 0/E s N e , single<br />

pulse<br />

N e , two<br />

pulses<br />

2.5x10 26 4x10 -2 - 14<br />

5x10 26 5.7x10 -2 - 2.6x10 7<br />

5x10 27 0.18 25<br />

1x10 28 0.25 3x10 7<br />

S. S. Bulanov, N. B. Narozhny, V. D. Mur, V.S. Popov, JETP, 102, 9 (2006)

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