On Tue, Dec 6, 2011 at 3:25 PM, Mark Iverson-ZeroPoint < [email protected]> wrote:
> ** ** > > “Collisions can be resonant too…”**** > > ** ** > > Please explain…**** > > ** > Here's an abstract from PRL, which I found with 10 seconds of google. Have you heard of it? Resonant collisional energy transfer between atoms with small relative velocity is shown to have such long collision times, ∼0.17 μs, or equivalently such narrow linewidths, 6 MHz, that it may be used to make spectroscopic measurements. Specifically, we report the use of the sharply resonant collisional energy transfer ns+(n-2)d→np +(n-1)p, between velocity-selected K atoms to determine an improved value, 1.711?5(5), and the K np-state quantum defect.
