de-excitation

The last step is de-excitation and it dominates, so Sinha the boss bunny in the lab that did the experiment said that they had to really press on the first step to excite a lot of NO2* to see even a bit of OH.

Archive 2009-06-01 EliRabett 2009

Re-emission and collisional de-excitation play important roles in a the current CO2 level atmosphere and would continue to play important roles in an atmosphere with doubled CO2 levels not sure why you're so fixated with that or even a pure CO2 atmosphere.

Darth Data Destroyer EliRabett 2009

The processes (absorption of light, collisional energy transfer and emission) can be separated because the average time that an isolated CO2 molecule takes before it emits a photon is much longer that the time for collisional de-excitation (~tens of microseconds at atmospheric pressure, less, higher in the atmosphere).

Rabett Run EliRabett 2009

The reason for this is that collisional de-excitation is much faster

Eli Rabett and RW Wood EliRabett 2009

The reason for this is that collisional de-excitation is much faster like a few orders of magnitudethan emission so essentially all of the CO2 which absorbs an IR photon, losses it in a few microseconds.

Darth Data Destroyer EliRabett 2009

The last step is de-excitation and it dominates, so Sinha the boss bunny in the lab that did the experiment said that they had to really press on the first step to excite a lot of NO2* to see even a bit of OH.

Rabett Run EliRabett 2009

The de-excitation of these molecules produces scintillation light.

MiniBooNE Neutrino Result - Guest Blog from Heather Ray John 2007

So it is not physically impossible to re-emit at the same frequency, it is indeed physically perfectly normal to do so, but in different conditions other mechanisms such as collisional de-excitation will interupt the re-emission at that same frequency.

Hits « Climate Audit 2005

The intensity of the light typically is modulated at acoustic frequencies, and the subsequent collisional de-excitation of the gas produces a sound wave.

Engineering Hardware-Software 2010

The intensity of the light typically is modulated at acoustic frequencies, and the subsequent collisional de-excitation of the gas produces a sound wave.

Engineering Hardware-Software 2010