collisional

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

Since such dusts must be continually replenished, they are generally assumed to be the collisional fragments of residual planetesimals analogous to the Kuiper Belt objects.

Planet-x.com.au » Dusty Disks around White Dwarfs I: Origin of Debris Disks … 2010

Astrophysicists have reached a consensus on the formation of terrestrial planets: it happens through collisional accumulation of small objects.

About: The Progressive Diminishment of Man 2010

The orbit of P/2010 A2 is consistent with membership in the Flora asteroid family, produced by collisional shattering more than 100 million years ago.

Hubble Takes A Look at Possible Asteroid Collision | Universe Today 2010

The orbit of P/2010 A2 is consistent with membership in the Flora asteroid family, produced by collisional shattering more than 100 million years ago.

ianrandalstrock: Maybe it's a Romulan warbird ianrandalstrock 2010

The orbit of P/2010 A2 is consistent with membership in the Flora asteroid family, produced by collisional shattering more than 100 million years ago.

ianrandalstrock's Journal ianrandalstrock 2010

Dave, the location of the lower Fraser Valley is an interesting and complex tectonic regime, but there is no doubt that the resultant stress is towards collisional lifting in the current configuration.

Sinking river delta could mean trouble along Fraser « Stephen Rees's blog 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 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

In the case of the Fraser Delta: we are still rebounding from deglaciation and there is continued uplift due to an overall collisional regime along the leading edge of the North American Plate.

Sinking river delta could mean trouble along Fraser « Stephen Rees's blog 2009