Presentation is loading. Please wait.

Presentation is loading. Please wait.

Bound Systems and Spectra

Published byKlara Madsen Modified over 6 years ago

Similar presentations

Presentation on theme: "Bound Systems and Spectra"— Presentation transcript:

1 Bound Systems and Spectra
Chp Q7,8

2 Key Concepts… Energy Eigenstates are never “exact” – time evolution rule implies that high energy states “evolve” to lowest possible states Energy level diagrams help to “conceptualize” this Particles have an intrinsic property called spin.

3 Key Concepts… Spin and orbital angular momenta interact in a complex way to give spin-orbit coupling and help explain the selection rules of atomic physics/chemistry

4 Examples… Stern-Gerlach Experiment Space quantization
Spin is an intrinsic “angular-momentum-like” property Fermions are “spin-one-half” particles Bosons are integer spin particles Question: electrons, protons and neutron are all spin-1/2. What is “odd” about the neutron as a spin-1/2 particle?

5 Examples… 21 cm line emission from neutral Hydrogen
To small an energy to be explained by energy level transition

6 From Carrots to Quantum Physics!
Why are carrots orange?

7

Download ppt "Bound Systems and Spectra"

Similar presentations

Quantum Phenomena II: Revision Quantum Phenomena II: Revision Chris Parkes April/May 2003  Hydrogen atom Quantum numbers Electron intrinsic spin  Other.

Quantum Phenomena II: Revision Quantum Phenomena II: Revision Chris Parkes April/May 2003  Hydrogen atom Quantum numbers Electron intrinsic spin  Other.
Bohr Model. Hydrogen Model  A hydrogen atom is a single electron and proton. One negative charge One positive charge  Assume that the discrete energies.

Bohr Model. Hydrogen Model  A hydrogen atom is a single electron and proton. One negative charge One positive charge  Assume that the discrete energies.
PHYS 30101 Quantum Mechanics PHYS 30101 Quantum Mechanics Dr Jon Billowes Nuclear Physics Group (Schuster Building, room 4.10)

PHYS Quantum Mechanics PHYS Quantum Mechanics Dr Jon Billowes Nuclear Physics Group (Schuster Building, room 4.10)
ConcepTest #72 Look at the potential well sketched to the right. A particle has energy E which is less than the energy of the barrier U 0 located at 5.

ConcepTest #72 Look at the potential well sketched to the right. A particle has energy E which is less than the energy of the barrier U 0 located at 5.
Spin Quantum Number and Spin Example: Electron, s = ½ (fermion) Implications? Spin angular momentum is INTRINSIC to a particle mass charge spin More 

Spin Quantum Number and Spin Example: Electron, s = ½ (fermion) Implications? Spin angular momentum is INTRINSIC to a particle mass charge spin More 
Lecture 13 Space quantization and spin (c) So Hirata, Department of Chemistry, University of Illinois at Urbana-Champaign. This material has been developed.

Lecture 13 Space quantization and spin (c) So Hirata, Department of Chemistry, University of Illinois at Urbana-Champaign. This material has been developed.
Solid State Chemistry Chapter 3 Atomic Structure and Spectra.

Solid State Chemistry Chapter 3 Atomic Structure and Spectra.
A bit on quantum mechanics and atomic physics Physics 114 Spring 2004 – S. Manly References and photo sources: K. Krane, Modern Physics, John Wiley and.

A bit on quantum mechanics and atomic physics Physics 114 Spring 2004 – S. Manly References and photo sources: K. Krane, Modern Physics, John Wiley and.
Spin-Orbit Effect In addition to its motion about the nucleus, an electron also has an intrinsic angular momentum called “spin” similar to the earth moving.

Spin-Orbit Effect In addition to its motion about the nucleus, an electron also has an intrinsic angular momentum called “spin” similar to the earth moving.
Atomic Spectroscopy: Atomic Emission Spectroscopy Atomic Absorption Spectroscopy Atomic Fluorescence Spectroscopy * Elemental Analysis * Sample is atomized.

Atomic Spectroscopy: Atomic Emission Spectroscopy Atomic Absorption Spectroscopy Atomic Fluorescence Spectroscopy * Elemental Analysis * Sample is atomized.
Atomic Structure Preparing for Bonding Douglas J. Burks BIO231 Wilmington College.

Atomic Structure Preparing for Bonding Douglas J. Burks BIO231 Wilmington College.
Physics 451 Quantum mechanics I Fall 2012 Nov 12, 2012 Karine Chesnel.

Physics 451 Quantum mechanics I Fall 2012 Nov 12, 2012 Karine Chesnel.
Vector coupling of angular momentum. Total Angular Momentum L, L z, S, S z J and J z are quantized Orbital angular momentumSpin angular momentum Total.

Vector coupling of angular momentum. Total Angular Momentum L, L z, S, S z J and J z are quantized Orbital angular momentumSpin angular momentum Total.
Spin and Atomic Physics 1. HW 8, problem 7.38 2. Quiz 11.6 3. Topics in this chapter:  The spin and the Stern-Gerlach experiment.  Fermion, Boson and.

Spin and Atomic Physics 1. HW 8, problem Quiz Topics in this chapter:  The spin and the Stern-Gerlach experiment.  Fermion, Boson and.
ATOMIC PHYSICS Dr. Anilkumar R. Kopplkar Associate Professor

ATOMIC PHYSICS Dr. Anilkumar R. Kopplkar Associate Professor
Orbitals and Quantum Numbers. Objective Students will be able to describe the quantum numbers n, l, and m l used to define an orbital in an atom, and.

Orbitals and Quantum Numbers. Objective Students will be able to describe the quantum numbers n, l, and m l used to define an orbital in an atom, and.
Baby-Quiz 1.If all objects emit radiation, why don’t we see most of them in the dark? 2.Suppose you were a nineteenth-century scientist who had just discovered.

Baby-Quiz 1.If all objects emit radiation, why don’t we see most of them in the dark? 2.Suppose you were a nineteenth-century scientist who had just discovered.
Spin Electronic charge in motion - A current loop behaves as a magnetic dipole and has a magnetic moment. - Note the current direction is opposite to the.

Spin Electronic charge in motion - A current loop behaves as a magnetic dipole and has a magnetic moment. - Note the current direction is opposite to the.
Writing Electron Configuration. Quantum Numbers Quantum numbers define the location of electrons in an atomic orbital. This helps us understand why different.

Writing Electron Configuration. Quantum Numbers Quantum numbers define the location of electrons in an atomic orbital. This helps us understand why different.
Chapter 10 Atomic Structure and Atomic Spectra. Spectra of complex atoms Energy levels not solely given by energies of orbitals Electrons interact and.

Chapter 10 Atomic Structure and Atomic Spectra. Spectra of complex atoms Energy levels not solely given by energies of orbitals Electrons interact and.

Similar presentations

Ads by Google