SP434 Nuclear PhysicsThis page describes the goings-on associated with the Nuclear Physics course and the Particle Accelerator. You can select from:
Very Quick Tour of the Accelerator in Pictures
Course Outline for SP434
Nuclear Physics Notes on various topics
Powerpoint presentation "Educational Activities at the USNA 5SDH" which shows what we use the accelerator for.
Very Quick Tour of the Naval Academy Tandem Accelerator Lab
This off-color photo shows the dual ion sources where we make proton projectiles out of Hydrogen atoms. (We do occasionally make other beams). The actual Van de Graaff is laying on its side inside the pressure vessel. The terminal potential can be up to 1.7 MV. Negative ions are attracted into the Van de Graaff from the ion source. Once in the center, their electrons are stripped off and they get accelerated out too. That's why its referred to as a tandem.
Here we see the control console for the accelerator and the Van de Graaff (ok, Pelletron) in the background.
The analyzing magnet directs the beam down one of two beamlines and also measures the beam's momentum (and energy).
Here's one of our scattering chambers where we do trace element analysis. The sample is placed inside the scattering chamber (just right of center). The protons enter generate X-rays when they strike the sample. A portion of the X-ray detector is visible just to the left of the large beampipe. One advantage of the PIXE technique is that it is non-destructive, so that valuable or rare samples may be studied.
For better and more extensive photos, go see the Powerpoint presentation.
SP434 Course Outline
Basic descriptions of nuclei; back-of-the-envelope calculations, nuclide chart ( 1.5 weeks)
Radiation Health Concerns
Particle Detectors and Data Acquisition System layout and function ( 1 week )
Particle Accelerator Types and Purposes ( 1.5 weeks )
Quantum mechanics review with emphasis on practical techniques for solving the Schrodinger Equation and the impact of angular momentum. ( 2 weeks )
Nuclear Models: Shell Models, Collective Models, Algebraic Models ( 2.5 weeks )
Reaction Mechanisms ( 2.5 weeks )
Nuclear Astrophysics ( 1 week )
Elementary Particle Physics ( 2 weeks )
CAMAC Data Acquisition System Layout and Function
NaI Detectors: response function
Germanium Detectors: why radioactive sources decay,
familiarization with "Table of Isotopes"
the 238U decay series,
potential barrier penetration by alpha particles
Differential Cross Section Measurements: Compton Scattering
g-g Coincidence Measurements
constructing level schemes
determining spins of excited states
Accelerator Operations: how to operate the Pelletron
beam optics and transport
Trace Element Analysis with PIXE
quadrupole moment measurements
excited states of 14N using p + 12C
spins & parities
Resonances with thick targets
oxide layers on Aluminum metal
|Beam Optics Calculations for Van de Graaff Accelerators|
|Educational Activities at the USNA 5SDH|
The Powerpoint presentation "Educational Activities at the USNA 5SDH", is full size. The file is 5+ MB.