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Author Topic: Creation of gama rays, x rays, microwaves  (Read 4149 times)

Offline igracgq

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Creation of gama rays, x rays, microwaves
« on: 30/11/2007 02:58:44 »
how are gama rays, x rays, microwave produced? By appying hight volts and emmiting it?  How is this created?


Thanks


 

another_someone

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Creation of gama rays, x rays, microwaves
« Reply #1 on: 30/11/2007 04:12:34 »
There is no single answer to that.

Microwaves are commonly produced by many electronic devices - the common one being a magnetron - but the thing the all have in common is the cause electrons to oscillate in one way or another, and so emit high frequency radio waves (which is all that microwaves are).  Low power microwaves (as used in mobile phones, or radars) can simply be produced using various solid state electronic devices.

X-rays are usually created on Earth by sending an electron beam to hit a stationary metal target.

Gamma rays (there is no sharp line between gamma rays and X-rays, and low energy gamma rays are the same as high energy X-rays, but depending on context, may be called one thing or the other), are most commonly produced by by some sort of nuclear reaction.

These are the common ways in which these different forms of radiation are produced, but there are in fact many different ways of producing them (and in astronomy, you may often have one form of radiation converted to another form by doppler shifting - this is what has happened with the microwave background radiation, that was once very high energy (probably gamma radiation), but as the universe has expanded, so it has been doppler shifted down to microwave radiation).
 

Offline igracgq

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Creation of gama rays, x rays, microwaves
« Reply #2 on: 02/12/2007 05:25:02 »
Thanks for the explanation but me being a newbie in this area, I didn't get the whole picture.  Do you know a good source (a website) that would explain this in very basic detail to me?

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Offline Quantum_Vaccuum

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Creation of gama rays, x rays, microwaves
« Reply #3 on: 02/12/2007 21:10:21 »
cant gama rays be made by gamma decay?
 

lyner

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Creation of gama rays, x rays, microwaves
« Reply #4 on: 06/12/2007 14:57:51 »
Yes, as another someone said - gamma rays are called gamma rays because of their source. You can, it so happens, produce em radiation with the same frequency with a high enough energy beam of electrons.
Typically, the energy for 'gamma' rays is in the region of Mega Electron Volts (MeV) whilst the energy for  commonly used X rays is in the region of several Kilo Electron Volts (keV).
I think that, at the time these things were named, the only Gamma rays around came from nuclear decay and  X rays were generated using induction coils, which produced kV of potential.
The other divisions of the electromagnetic spectrum are a bit better defined, although electronics is now able to produce and look at sub-millimeter microwaves which, at one time, were only detectable and produced  by thermal means - more like Infra Red.
 

Offline Bored chemist

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Creation of gama rays, x rays, microwaves
« Reply #5 on: 06/12/2007 19:45:20 »
Might this do better somewhere other than Chemistry?
 

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Creation of gama rays, x rays, microwaves
« Reply #5 on: 06/12/2007 19:45:20 »

 

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