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Science China Physics Mechanics and Astronomy

Numerical study of laser-induced collision process in Eu-Sr in strong field

Hongying Zhang, Yuanqin Xia, Deying Chen, Pan Xiao, Rongwei Fan, Zuguang Ma

Published Feb 1, 2005• 2 citations
Publisher
DOI
10.1007/bf02736588

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Based on the existing four-level model of laser-induced collisional energy transfer, the collision process in Ba-Sr system in both weak and strong fields is calculated by immediate integration of the equation of motion, and profiles of laser-induced transition probability and collision cross section under both conditions are obtained. Numerical results for the weak field are in fair to good agreement with former analytical results, while the ones for the strong field show that the effect of laser-induced collision is enhanced when the transfer laser intensity increases. Moreover, the peak of the laser-induced collisional energy transfer spectrum shows an evident shift from resonant frequency to the violet side in strong field, and full width at half maximum (i.e. tuning range) of the spectrum becomes obviously narrower compared with that in weak field.