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ATOMIC PROCESSES

Takashi Fujimoto

in Plasma Spectroscopy

Published in print:
2004
Published Online:
September 2007
ISBN:
9780198530282
eISBN:
9780191713149
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198530282.003.0003
Subject:
Physics, Nuclear and Plasma Physics

This chapter presents an overview of atomic processes which play important roles in plasma spectroscopy. Starting with the atomic wavefunction of hydrogen, the absorption oscillator strengths between ... More


The spontaneous emission of radiation

Alan Corney

in Atomic and Laser Spectroscopy

Published in print:
2006
Published Online:
September 2007
ISBN:
9780199211456
eISBN:
9780191705915
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199211456.003.0004
Subject:
Physics, Atomic, Laser, and Optical Physics

Starting from a classical model of the atom, the classical rate at which energy is radiated is obtained and then converted into a quantum-mechanical transition rate. The calculation of the radiative ... More


Radiative transfer and the formation of spectral lines

Alan Corney

in Atomic and Laser Spectroscopy

Published in print:
2006
Published Online:
September 2007
ISBN:
9780199211456
eISBN:
9780191705915
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199211456.003.0010
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter derives the equation of radiative transfer for an excited gas sample. The terms source function and optical thickness are also defined, and the effects of self absorption are considered. ... More


The absorption and stimulated emission of radiation

Alan Corney

in Atomic and Laser Spectroscopy

Published in print:
2006
Published Online:
September 2007
ISBN:
9780199211456
eISBN:
9780191705915
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199211456.003.0009
Subject:
Physics, Atomic, Laser, and Optical Physics

Starting from the absorption of radiation by a classical electron oscillator, Einstein's A and B coefficients for spontaneous and stimulated transitions are introduced. Stimulated transition rates ... More


Frequency‐Dependent and Spectral Properties

Stephan P. A. Sauer

in Molecular Electromagnetism: A Computational Chemistry Approach

Published in print:
2011
Published Online:
December 2013
ISBN:
9780199575398
eISBN:
9780191775109
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199575398.003.0007
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter deals with time-dependent perturbations in the form of the oscillating electromagnetic fields of light. First, it presents the vector and scalar potentials for linear and circularly ... More


Biexcitons

Monique Combescot and Shiue-Yuan Shiau

in Excitons and Cooper Pairs: Two Composite Bosons in Many-Body Physics

Published in print:
2015
Published Online:
March 2016
ISBN:
9780198753735
eISBN:
9780191815287
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198753735.003.0014
Subject:
Physics, Condensed Matter Physics / Materials

Chapter 14 deals with biexcitons. Being made of two electrons and two holes, these particles are composite bosons. In this chapter, the relevant biexciton coordinates are first established. The ... More


Light interactions with semiconductors

Sandip Tiwari

in Semiconductor Physics: Principles, Theory and Nanoscale

Published in print:
2020
Published Online:
November 2020
ISBN:
9780198759867
eISBN:
9780191820830
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198759867.003.0012
Subject:
Physics, Condensed Matter Physics / Materials

This chapter examines how electromagnetic waves—light, photons—interact with semiconductors through coupling between the electromagnetic wave and dipoles of various kinds and analyzed via a dipole ... More


Scattering of X-rays and Neutrons

Philip Coppens

in X-Ray Charge Densities and Chemical Bonding

Published in print:
1997
Published Online:
November 2020
ISBN:
9780195098235
eISBN:
9780197560877
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780195098235.003.0003
Subject:
Chemistry, Physical Chemistry

This chapter starts with a discussion of the classical treatment of X-ray scattering, followed by a brief overview of the quantum-mechanical theory in the first Born ... More


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