Explaining Alpha Beta & Gamma - Can Someone Help?

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    Alpha Beta Gamma
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Discussion Overview

The discussion revolves around the meanings and contexts of the terms alpha, beta, and gamma, particularly in relation to radiation and nuclear reactions. Participants seek clarification on the definitions and origins of these terms within physics, touching on concepts from nuclear physics and particle interactions.

Discussion Character

  • Conceptual clarification
  • Technical explanation
  • Exploratory

Main Points Raised

  • One participant expresses understanding of alpha but seeks clarification on beta and gamma.
  • Another participant notes that the meanings of these symbols depend on context, suggesting areas like special relativity or quantum mechanics.
  • A participant identifies that the discussion likely pertains to radiation, defining alpha as He-4 nuclei, beta as electrons or positrons, and gamma as photons.
  • Further clarification is provided that beta particles specifically originate from neutrons during nuclear reactions, where a neutron can decay into a proton and an electron.
  • Another participant confirms that beta particles come from the nucleus and describes gamma rays as massless photons similar to light.
  • A detailed explanation of beta radiation is presented, including the reactions that produce beta particles and the conditions under which gamma photons are emitted.

Areas of Agreement / Disagreement

Participants generally agree on the definitions of alpha, beta, and gamma in the context of radiation, but there are varying levels of detail and emphasis on the origins and processes involved, indicating some uncertainty and differing perspectives.

Contextual Notes

Some participants' statements depend on specific nuclear reactions and may not cover all possible contexts for beta and gamma radiation. The discussion does not resolve the broader implications or applications of these terms in different areas of physics.

AnthreX
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i get what alpha is
but i do not really get what betta and gamma is

can someone please explain to me ?

thanx
 
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They're just greek letters. Their meaning as symbols for physical quantities (even by convention) depends greatly upon context. Are you talking about special relativity? Quantum mechanics?

- Warren
 
That grouping suggests you are discussing radiation. Alphas are He-4 nuclei, betas are electrons or positrons, and gammas are photons (electromagnetic).
 
swansont said:
betas are electrons or positrons
More specifically, they are electrons or positrons that came from neutrons. In a nuclear reaction, a neutron can be broken into a proton and an electron, that electron is called a beta particle.
 
alpha is the particle from an unstable nucleus

he-4 yes it is

beta is an electron but where does it come from? is it from the nucleus ?

gamma is a ray which is has no mass and just like light


this is all i know about beta and gamma

can someone add something to my statement ?
 
Beta radiation is (basically) formed by either of the reactions oir simlair reacions

[tex]n \rightarrow p^+ + e^- + \bar{\nu}_e[/tex]

[tex]p^+ \rightarrow n + e^+ + \nu_e[/tex]

In most cases the neutron and the proton (all in the protons case) will be assocaited will be part of a nucleus so in effect the beta particle will come from the nucleus.

Gamma rays are simply photons that are produced by nuclear reactions (for example sometimes after beta decay the daughter nucleus is left in an excited state and will emit a gamma photon) or anihilation (for example):

[tex]e^+ e^- \rightarrow \gamma\gamma[/tex]
 

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