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
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.
. [J]. 中国物理快报, 2013, 30(7): 71201-071201.
LI Zi-Liang, SANG Hai-Bo, XIE Bai-Song. Enhanced Electron-Positron Pair Production of a Vacuum in a Strong Laser Pulse Field by Frequency Variation. Chin. Phys. Lett., 2013, 30(7): 71201-071201.
2013, Vol. 30 
