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The laser synthesis of alkaline earth dimers (Be2, Mg2, Ca2, Sr2, and Ba2) is investigated by theoretical calculation. Photoassociation based on ab initio calculations is rationalized by Franck‐Condon filtering. The optimal target states of photoassociations have been obtained, which are A1∑+u state for Be2, Mg2, and Ca2, and are B1∑+u state for Sr2 and Ba2, corresponding to vibrational transition...
This paper reports the experimental results of pulse-charged spark gap based on GaAs semiconductor photoconductive switches. With variation in the position and structure of spark gap, the electric characteristics of output waveforms are obtained and the breakdown mechanism in pulse-charged spark gap based on photoconductive switches is analyzed. Results imply that high current or ultrafast pulse could...
A streamer mode was proposed based on the gas discharge theory and the theory of optically activated charge domain in high gain gallium arsenide (GaAs) photoconductive switches (PCSS). The paper expounded the whole physical process that from the laser started to illuminate the material to the formation of the streamer. Note the critical conditions in which the streamer form and develop, comparing...
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