Enhanced Electron-Positron Pair Production of a Vacuum in a Strong Laser Pulse Field by Frequency Variation

doi:10.1088/0256-307X/30/7/071201

Chin. Phys. Lett.

2013, Vol. 30

Issue (7): 071201 DOI: 10.1088/0256-307X/30/7/071201

THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

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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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.

Received: 04 March 2013 Published: 21 November 2013

PACS:	12.20.Ds	(Specific calculations)
	11.15.Tk	(Other nonperturbative techniques)
	42.55.Vc	(X- and γ-ray lasers)

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https://cpl.iphy.ac.cn/10.1088/0256-307X/30/7/071201 OR https://cpl.iphy.ac.cn/Y2013/V30/I7/071201

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