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I'm confused now... how can be antiparticles be detected in a bubble chamber which is made of ordinary matter? Why does a positron leave its trace interacting with the chamber gas without annihilating immediately?
Antimatter is charged, and charged particles ionize atoms in the bubble chamber, which leads to emission of photons along the track.I'm confused now... how can be antiparticles be detected in a bubble chamber which is made of ordinary matter? Why does a positron leave its trace interacting with the chamber gas without annihilating immediately?
Why should there be immediate annihilation? Or more quantitatively, how "immediate" do you think it should be, and why? (Remember, if it lasts a microsecond, it will travel 1000 feet)
The range of coulomb interaction - attraction or repulsion - is much greater than the range for annihilation. There is a lot of 'distance' between electrons and atoms.Hmmm.... I don't feel this answers the question. Why is there any ionization at all and not an immediate annihilation at the first collision? What is observed are several collisons of a positron with many electrons, and yet no annihilation? That doesen't make sense to me.
The range of coulomb interaction - attraction or repulsion - is much greater than the range for annihilation. There is a lot of 'distance' between electrons and atoms.