高功率激光可达强度的限制。
Limitations on the attainable intensity of high power lasers.
机构信息
National Research Nuclear University MEPhI, Moscow 115409, Russia.
出版信息
Phys Rev Lett. 2010 Aug 20;105(8):080402. doi: 10.1103/PhysRevLett.105.080402. Epub 2010 Aug 18.
Abstract
It is shown that even a single e- e+ pair created by a superstrong laser field in vacuum would cause development of an avalanchelike QED cascade which rapidly depletes the incoming laser pulse. This confirms Bohr's old conjecture that the electric field of the critical QED strength E(S) = m2c3/eℏ could never be created.
摘要
研究表明，即使在真空中由超强激光场产生的一对正负电子(e-e+ 对)也会引起类似雪崩的 QED 级联发展，从而迅速耗尽入射激光脉冲。这证实了玻尔的旧猜想，即关键 QED 强度 E(S) = m2c3/eℏ 的电场永远无法产生。
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