THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Enhanced Electron-Positron Pair Production of a Vacuum in a Strong Laser Pulse Field by Frequency Variation |
LI Zi-Liang, SANG Hai-Bo, XIE Bai-Song** |
Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875
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Cite this article: |
LI Zi-Liang, SANG Hai-Bo, XIE Bai-Song 2013 Chin. Phys. Lett. 30 071201 |
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Abstract Effects of frequency variation on vacuum electron-positron pair production in strong pulsed laser fields are investigated in the framework of a quantum kinetic method. It is found that the slowly varying frequency can influence the pair production to some extent, while rapid varying frequency can increase the pair creation rate a few orders if the time lies within a narrow time window, in which frequency jump occurs. The possible physical mechanism behind the pair enhancement phenomenon is discussed briefly.
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Received: 04 March 2013
Published: 21 November 2013
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