• Want to help us with this year's BoS Trials?
    Let us know before 30 June. See this thread for details
  • Looking for HSC notes and resources?
    Check out our Notes & Resources page

particle accelerators/nucleus (1 Viewer)

stangburger

New Member
Joined
Sep 29, 2009
Messages
1
Gender
Male
HSC
2010
Soooo... does anyone know how particle accelerators help us to probe the nucleus?
 

Aerath

Retired
Joined
May 10, 2007
Messages
10,169
Gender
Undisclosed
HSC
N/A
Using alternating positive and negative electric fields to create a repulsive force behind the particle, and an attractive force in front of the particle to accelerate it to speeds high enough to overcome the repulsive electrostatic force of the nucleus (assuming you're bombarding it with something positive, ie, charged ions etc). You wouldn't really use an accelerator to bombard a nucelus with neutrons - a nuclear reactor will do.
 

ajay098

Member
Joined
Sep 15, 2007
Messages
95
Gender
Female
HSC
2009
Particle accelerators are used to accelerate sub-atomic particles to cery high energies. The two main uses of particles accelerators are
(a) to produce radioisotopes by bombarding elements with various sub-atomic particles
b) to produce beams of very high energy particles that can be used to probe the structure of matter - the higher the energy ( and therefore the velocity)of a particle, the smaller the De Broglie Wavelength. The smaller the De Broglie wavelength, the smaller the detail the particle can 'see' - ie the better the resolving power of a beam of such paticles.
 

pman

Banned
Joined
Apr 7, 2009
Messages
2,127
Location
Teh Interwebz
Gender
Male
HSC
2009
Very high energy beams also allow as to creat particles with insanely short half lives, this means we can see big bang offshoot particles (e.g. top quark)
 

gabgab

Member
Joined
Mar 9, 2009
Messages
73
Gender
Female
HSC
2009
like throwing a car at a wall and smashing it to pieces.

that way you can find the components of the nucleus etc.
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top