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Ions and electrons in liquid helium

Armando Francesco Borghesani

Published in print:
2007
Published Online:
January 2008
ISBN:
9780199213603
eISBN:
9780191707421
Item type:
book
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199213603.001.0001
Subject:
Physics, Condensed Matter Physics / Materials

In liquid helium, an electron is surrounded by a cavity called an electron bubble of 20 Ångstroms in diameter. A positive helium ion is solvated by an electrostriction induced solid helium-ice shell ... More


Atomic properties: two-electron atoms

Arne Haaland

in Molecules and Models: The molecular structures of main group element compounds

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199235353
eISBN:
9780191715594
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199235353.003.0002
Subject:
Physics, Condensed Matter Physics / Materials

This chapter discusses the application of quantum mechanics to helium and other two-electron atoms. The use of the wavefunction to calculate probability densities is described. The atomic orbital ... More


Basic properties

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0010
Subject:
Physics, Condensed Matter Physics / Materials

This chapter introduces the basic properties of and theory of 3He-4He mixtures. Topics discussed include effective quadratic interaction, molar volumes and the phase diagram, chemical potential and ... More


Acoustic and temperature waves

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0011
Subject:
Physics, Condensed Matter Physics / Materials

This chapter examines 3He-4He mixtures with acoustic and temperature waves. Topics discussed include first sound, velocity of second sound, attenuation of second sound, oscillating superleak ... More


Transport properties

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0012
Subject:
Physics, Condensed Matter Physics / Materials

This chapter examines the transport properties of 3He-4He mixtures. It outlines the theory for the transport coefficient over a wide range of temperatures and then discusses experiments that measure ... More


Neutron and photon scattering

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0013
Subject:
Physics, Condensed Matter Physics / Materials

This chapter examines the structure of 3He-4He mixtures with neutrons. It focuses on thermal neutron studies of the quasiparticle excitation spectrum and structure functions. It begins with the ... More


Theory of spin-polarized solutions

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0014
Subject:
Physics, Condensed Matter Physics / Materials

Very dilute solutions of 3He in superfluid 4He behave as an almost ideal Fermi gas at millikelvin temperatures, which can be strongly polarized in high magnetic fields. This has enabled studies of ... More


Interfaces

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0017
Subject:
Physics, Condensed Matter Physics / Materials

This chapter presents measurements of interfacial tension and studies of the properties of 3He-4He mixtures in aerogel and their wetting transitions on caesium. It also discusses the nucleation of ... More


Solutions of 4He in 3He

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0018
Subject:
Physics, Condensed Matter Physics / Materials

Although there have been both theoretical and experimental studies of dilute solutions of 4He in normal 3He for many years, significant results at millikelvin temperatures have been achieved only in ... More


Search for superfluidity in mixtures

E. R. DOBBS

in Helium Three

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198506409
eISBN:
9780191709463
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198506409.003.0019
Subject:
Physics, Condensed Matter Physics / Materials

Bardeen, Cooper, Schrieffer (BCS) showed that a Fermi fluid with an attractive interaction between its quasiparticles would, at sufficiently low temperature Tc, form an s-state superfluid of Cooper ... More


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