ASTR 5110 Internal Processes 1 Fall 1999: Syllabus
ASTR 5110 Fall 99 Homepage
Grading
Grading will be weighted as follows:
If you add that up, it comes to 110%.
To make it 100%, I will drop the worst 10% of your score.
Problem sets will be handed out every one or two weeks;
we'll see how that turns out in practice.
Normally problems will be due on a Friday,
and the aim is to have them graded by Monday,
or if the skiing has been good by Wednesday,
at which point we will devote some portion of the class period to
discussing the problems.
The midterm will be on Statistical Mechanics,
and will be a 24 hour take home exam,
which you will complete in any consecutive 24 hour period
during 2330 Sep.
In place of a final, you will make a 10 minute presentation in class,
and write an associated report,
on a paper involving some application of
Atomic, Molecular, or Radiation Physics
in Astronomical or Planetary Science.
Details at Reports and Presentations.
This final will be supplemented by a oneonone oral exam,
which is likely to cover not only material in your report and presentation,
but also atomic, molecular, and radiation physics in general.
Invited Lectures
I will be away for 2 weeks during 819 Nov.
Dick McCray and Mike Shull have kindly agreed to offer a selfcontained set of
lectures on Molecular Physics over that period.
Content
The course falls into three parts:
 Statistical Mechanics (4 weeks)
 Atoms and Radiation (7 weeks)
 Molecules (2 weeks)
1. Statistical Mechanics (4 weeks)

Per AJSH notes (see Texts)
2. Atoms and Radiation

Atoms: Overview (1 week)

Collisional and radiative processes

Atomic units

Bohr Atom

Atomic Structure

Selection Rules

Spectra

Review of Quantum Mechanics (1 week)

Schrödinger Equation

Operators

Angular Momentum

Perturbation Theory

Rates

Hydrogen Atom (1 week)

Wavefunctions

Spin

Hatom spectroscopy

Finestructure, Hyperfine structure, Zeeman effect, 2photon transitions, Lamb shift

MultiElectron Atoms (2 weeks)

Structure: configuration, LS term, J level

Construction of terms

Isoelectronic sequences

Radiative selection rules

Lines: Resonance, Allowed, Forbidden, Semiforbidden, FineStructure

Radiative Processes (2 weeks)

Radiation from moving charges

Multipole expansion

Oscillator strengths

Spontaneous emission, absorption, stimulated emission

Einstein relations

Line profiles: Doppler, Lorentz, Voigt

Introduction to Radiative Transfer Equation

Opacity sources

Excitation, Ionization, Cooling (1 week)

Detailed Balance

Collisional processes

Rates: collision strength, Born approximation, generalized oscillator strength

Twolevel atom

Plasma diagnostics: density, temperature

Ionization equilibria: thermodynamic, collisional, photoionization

Cooling function

Thermal instability
3. Molecules (2 weeks)

Bonding

Electronicvibrationalrotational

Notation: diatomic molecules

Vibrational levels: simple harmonic oscillator

Rotational levels: top

Nuclearelectronic angular momentum coupling: Hund's cases

Symmetry of homonuclear molecules: para/ortho

Rovibrational spectra

FranckCondon principle

HönlLondon factors

Selection rules

Assocation, dissociation, predissociation
Texts
ASTR 5110 Fall 99 Homepage
Updated 7 Sep 1999