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Old Apr 23rd 2018, 03:04 PM   #1
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Does a proton exist?

Do proton even exist. How are they formed?
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Old Apr 23rd 2018, 03:14 PM   #2
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A single proton is made up of three quarks, two ups and a down, along with any gluon exchanges going on in the interior.

On a more advanced level a more complicated nucleus, say, oxygen with 8 protons and 8 neutrons, is a much busier place with protons and neutrons temporarily being "created and destroyed" inside the nucleus as the quarks move around. (The so-called valence nucleons, near the "surface" of the nucleus, are basically stable particles. Closer to the interior they become a number of loosely bound interacting quarks.)

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Old Apr 23rd 2018, 04:02 PM   #3
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How are protons that are used in the accelerator formed?
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Old Apr 23rd 2018, 04:42 PM   #4
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Originally Posted by lovebunny View Post
How are protons that are used in the accelerator formed?
I believe (not certain) that they come from bombarding a metal by gamma rays. Otherwise you could easily obtain them from stripping the electron off a hydrogen atom.

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