Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.physics.relativity > #382114

Re: High Energy physics (Particle physics)

Show all headers | View raw

Carl Susumu <numbernumber1212@gmail.com> writes:


>You seem to have a memory problem: Rutherford used alpha particles, which
>
>are the positive nuclei of helium atoms.  And, yes they would be stopped
>by the thinnest thickness of steel.  IIRC, Tom was talking about muons.
>High energy muons might lose about 5 MeV/cm, if my guesstiment is in the
>ballpark. So, yes, 60 MeV muons can indeed go through 2 inches of steel. 
>Michael Moroney 1:01 PM 4-20-2016.

Why do you keep posting something I did not write?



>Muons originate from cosmic rays that are massless similar to an x-ray and
>photon and cannot have a charge since a cosmic ray and light do not have a
>charge. Also, if a subatomic particle can propagate through two inches of
>steel without producing holes in the two inch steel enclosure of the bubble
>chamber, how can muons possibly form bubble tracks in liquid hydrogen?

Why would you make a bubble chamber out of 2 inch thick steel?
Being (usually) of liquid hydrogen, you'd need to insulate the hell out
of it, but steel is a poor insulator.

They operate at a few atmospheres pressure.  They have a portal for the
incoming particles which would need to be sufficient to separate the
bubble chamber contents from the vacuum beamline yet let most of the
incoming particles through.  Perhaps beryllium, a metal yet with a very
low atomic weight.  Or the portal can be combined with the target which
some beam smashes into, generating the stuff to be observed in the bubble
chamber, and the target also separates "inside" from "outside".

Back to sci.physics.relativity | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

High Energy physics (Particle physics) Carl Susumu <numbernumber1212@gmail.com> - 2016-04-21 21:08 -0700
  Re: High Energy physics (Particle physics) moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-04-22 17:19 +0000

csiph-web