Matter vs. Antimatter- particle destruction

[ydoaPs]

charge isn't the only properties that are different in particles and antiparticles.

[MolecularMan14]

what else is there? Im new to this type of thing

[ydoaPs]

spin

[MolecularMan14]

opposite directional spin on the particles or on the atoms? how would that affect the reaction?

[ydoaPs]

spin isn't really the rotation of the particle just like quarks colors aren't red, blue, ect.

[MolecularMan14]

lol, true, but what spins? does the particle spin within the atom, or does the atom spin itself? and how does this affect the reaction between the matter and the anti-matter?

[ydoaPs]

here is a link that describes what i am talking about

http://www.newton.dep.anl.gov/askasci/phy00/phy00562.htm

[MolecularMan14]

AHHH, ok; that clarifies a lot. Thanks

[serunato]

But wouldn't it have to be opposite in value to be anti, like spin up vs. spin down? Isn't that how protons and neutrons couple? I am really just looking at how electrons act, but they only are described to have spin because they have magnetic moment and that is described as a charge that is in motion. Or am I way off?

[swansont]

But wouldn't it have to be opposite in value to be anti, like spin up vs. spin down? Isn't that how protons and neutrons couple? I am really just looking at how electrons act, but they only are described to have spin because they have magnetic moment and that is described as a charge that is in motion. Or am I way off?

 

Protons and neutrons couple by the strong nuclear force. There is an energy dependence of nucleons on spin, but that is at least in part a consequence of the Pauli exclusion principle (e.g. in Tritium, the neutrons would have to have anti-aligned spins to be in the same energy level)

[Gilded]

"spin isn't really the rotation of the particle just like quarks colors aren't red, blue, ect."

 

Well, we don't really know 100% sure that the particles don't rotate around. Actually, doesn't the spin actually suggest that they are rotating?

[swansont]

"spin isn't really the rotation of the particle just like quarks colors aren't red' date=' blue, ect."

 

Well, we don't really know 100% sure that the particles don't rotate around. Actually, doesn't the spin actually suggest that they are rotating?[/quote']

 

No. I think the value for the angular momentum (Planck's constant) suggests superluminal speeds for some particles if there was physical rotation involved. Spin is just intrinsic angular momentum.