The effective delay time in pumphyphen;andhyphen;probe measurements

摘要

The delay time for secondary collisions is considered for systems in which a reactant is created by one short laser pulse, and a product detected with a second short laser pulse at some later time. Sample calculations for the Mg(1P1)+H2rarr; MgH+H reaction show that the average (or lsquo;lsquo;effectiversquo;rsquo;) delay time for secondary collisions of MgH product is different from and not necessarily linearly related to the delay time between the two laser pulses.