Physics Question

Conor108

Hey I'm doing particle physics for my LC at the moment and something I don't get about the Cockroft-Walton particle accelerator experiment; this is probably a stupid question but where did they get the protons that they accelerated to hit the lithium atom? Was it just the positive charge behind the hydrogen that seperated the protons and accelerated them down?

And kinda the same, how did Rutherford get the alpha-particles to fire at the gold sheet? Was it just a radioactive substance he put near it?

Thanks guys!

de_Selby

Protons are just ionised hydrogen (hydrogen that's been heated to the point where it loses it's electron) similarly alpha particles are helium nuclei, or doubly ionised helium. So you start with a batch of hydrogen/helium heat until it's fully ionized and use that as your source.

sponsoredwalk

http://www.youtube.com/watch?v=l-BNoAPe6qo&feature=player_embedded

The above lecture and I think some of the third one (the above link is the second lecture) should clear up any stray thoughts you have about how Rutherford went about performing the experiment. It gets pretty detailed but it is very interesting, full of pictures too

Sheeps

sponsoredwalk wrote: »

http://www.youtube.com/watch?v=l-BNoAPe6qo&feature=player_embedded

The above lecture and I think some of the third one (the above link is the second lecture) should clear up any stray thoughts you have about how Rutherford went about performing the experiment. It gets pretty detailed but it is very interesting, full of pictures too

shes hot

Sheeps

for a physics nerd

sponsoredwalk

Yeah I was debating that quite a bit in my head

She had her days, I mean, lectures

Michaelrsh

https://www.youtube.com/watch?v=S9WtBRNydso

Here's a hotty biology lecturer. Yes ... she is biology, and she most likely did something with her skin to make herself look younger.