what would happened to a photon if it collided with an electron and transmits all the kinetic energy to the?

Question

electron like in elastic coalitions? Would the photon be at rest? I know that electromagnetic radiation never is at rest so how can you explain it?

Answer 1

Photons do not have any mass.(photons has both wave and partical nature) Its sounds weired but its true. Photons are never at rest. Electrons can be(you can assume that electrons are at rest). when photons collide with electrons they transfer there energy to the eletrons and depending on the energy of photons and electrons different radiation take place.

Answer 2

The phtoton never comes to rest; it is CONVERTED from radiant energy to kinetic energy. (This is not the same as converting matter to energy or vice versa, just converting one kind of energy to another.)

When a photon collides with an electron, the kinetic energy of the electron (in electron-volts) is the same as the energy of the photon. ALL the energy of the photon goes into the kinetic energy of the electron, and the photon is no more.

When the electron decays back to its original orbital level around the atom (it can't stay ionized forever!), it radiates off, or emits a photon. When we have a steady stream of photons (from a high-voltage discharge lamp, for example) ionizing electrons in a transparent glass tube full of a mix of helium and neon gas, there is a 'population inversion'. Many more electrons than normal are raised to ionized levels.

When one electron gives up the photon again and radiates it, if it hits another electron that has not yet radiated, that second electron may also emit its photon. It is a sort of domino effect, or avalance of identical photons being given off. This is called 'stimulated emission'

When we put such an active material (the gas mixture), stimulated by an energy source (the high voltage lamp), into an optical cavity (between parallel mirrors), then the photons reflect back and forth between the parallel mirrors.

They pick up more and more similar photons of the same frequency and energy level with each succeeding pass, until the beam is intense enough to leak out of one mirror or the other (whichever one is less perfect a reflector.)

This is how we get "light amplification" by means of "stimulated emission of radiation", and now you know what L.A.S.E.R. stands for.

Answer 3

A photon is a tiny mass-less packet of energy traveling at the speed of light. When an electron of an atom interacts with the photon, the electron absorbs the energy of the photon and is kicked up higher into a more energetic orbit (and the photon ceases to exist!). When the electron falls back to its rest orbit (in one or more steps) it re-radiates one or more new photons that speed off into the darkness at the speed of light. The photons may be visible light or perhaps infrared depending on the temperature of the matter containing the atom. Very hot iron gives off both heat and light in the form of photons of different wavelengths and energies.

Answer 4

Electrons that are bound to atoms can be described as discrete shells of probability around the nucleus of each atom. When a photon or other energy, like magnetic energy, is absorbed in a shell, that shell collapses to a discrete inner shell. It collapses inward because inner shells are more energetic than outer shells.

But this new inner shell is unnatural to that atom. Soon the electron shell pops back out to its normal, less energetic shell. To do this, the electron has to get rid of that extra energy. It does that usually by emitting a photon even if the extra energy came from magnetism.

By measuring the energy level of the photon as it is released, we can calculate the difference in the energy between the inner higher energy shell and the normal outer shell. There is something called the Zeeman Effect that can be tested to show the discrete energy levels of electron shells.

Answer 5

because a photon's mass is so much larger than an electron's mass, this may be an impossible situation; HOWEVER, if they had the same mass, the electron would have to be at rest before the collision, which is also an impossibility.

With regard to E-M, these particles may cease to exist without their energy, which would mean that the electron at rest would never exist in the first place.