For you're theory to be correct one of the two mutually exclusive and collectively exhaustive physical laws breaking theories must exist...

So which is it:

Do radiation particles emit endless heat energy? or

J -- No, I do not believe that they emit endless "heat" energy. But I believe that the basic 'constituent' of the 'particles' exists somewhere at all times. In other words 'energy' can not be created or destroyed, it can only be changed from one type to another. There are two types of 'energies' in the universe, 'kinetic' and 'potential', in my opinion, this kinetic and potential differentiation of energies extends down to the 'fundamental' level. For instance, if 'ordinary' matter and 'antimatter' are combined, they 'annihilate' each other and the result is a formation of a large quantity of energetic 'gamma radiation'. In my opinion, the gamma radiation represents 'kinetic' energy and since the 'matter/antimatter' had the 'potential' to create the kinetic photons of gamma frequencies, the 'mass particles' are the 'potential' part of the equation. In other words, the 'electromagnetic' radiation is in the form of 'kinetic' energy and the 'mass' and 'anti-mass' are in the form of 'potential' energy.

S --Do radiations particles run into other matter which slows them down (friction) which generates heat. Eventually slowing the particles to a halt.

J -- I assume that by 'radiation particles' you mean 'photons'. According to some sources the 'photons' do not contain 'mass' but according to the above explanation the same 'constituent' that forms mass also forms photons. Einstein said that same thing with his famous formula of e=mc squared. Photons have the ability to 'interact' with mass, in the process of 'interacting' the photons can be 'absorbed' or 'emitted' by mass. The photons in the infrared spectrum have the ability to 'interact' easily with the molecules of matter, that is, the infrared energy can be absorbed and radiated, or reflected by the molecules. Your example of particles of matter running into other particles of matter is a good example of what happens to the molecules when they absorb and emit radiation.

J -- The basis of my 'argument' here is that the 'gamma' photons that are emitted in the nuclear fission process have more than 10 billion times the energy of infrared photons.
My question then is: How do these very energetic photons interact with the molecules in the atmosphere?
I do not know the answer to that question and figured that if I posed the question in the form of radioactivity 'heating' the atmosphere, then perhaps someone would be smart enough to answer it for me. Obviously I will need to look for the answer elsewhere. The people in this 'community' are not smart enough.

S -- or I guess you could argue that radioactive decay continues on indefinitly...Which would also violate the laws of physics as its been proven that radioactive elements have a half life.

J -- I agree with you on that.

S -- But then I'm just an accountant and don't understand a thing about nuclear physics.
Scott

Well Scott; I think that your understanding of nuclear physics is far greater than my understanding of accounting.

Johannes