Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Investigation of Condensation in a Supersonic HELIUM-4 Beam: the HELIUM-4 Dimer and Magic Number Effects in Larger Clusters.

Peter W. Stephens

Published Jan 1, 1978• 0 citations
OpenAlex

Related papers

Whither magic numbers: a variational Monte Carlo study of six and seven atom helium clusters

Steven W. Rick, Jimmie D. Doll

Chemical Physics Letters•Jan 1, 1992•9 citations

A novel approach to the observation of the condensate in superfluid helium four

32nd Aerospace Sciences Meeting and Exhibit•Jan 10, 1994•0 citations

Experimental Investigation of Small Helium Clusters: Magic Numbers and the Onset of Condensation

Peter W. Stephens, John Gordon King

Clusters of He atoms formed in a supersonic free jet expansion have been studied by electron-bombardment ionization and mass spectrometry. Distinct magic-number enhancements of ion intensity are observed for clusters of 7, 10, 14, and 30 atoms for both helium isotopes, and for 23 atoms of $^{4}\mathrm{He}$. Dramatic differences in the onset of cluster formation between the two isotopes may be related to the stability of $^{4}\mathrm{He}$ dimers.

Physical Review Letters•Oct 24, 1983•148 citations

“Eclipse” Effect in the Scattering of Weakly Bound Helium Clusters

Anton Kalinin, Oleg Kornilov, Lev Yu. Rusin +2 more

The total cross sections of the helium dimer, trimer, and tetramer for scattering from Kr atoms have been measured for cluster beam velocities between 250 and 820 m/s. The dimer cross section is twice that of the atom within 5% indicating that the Kr atoms scatter from the He atoms independently, which is consistent with the large dimer bond distance of about 50 A. The trimer and tetramer cross sections are somewhat larger and can be described by an impulse approximation with a multiple "eclipse" correction, extending ideas of Glauber for high energy collisions with the deuteron.

Physical Review Letters•Oct 13, 2004•9 citations

Study on correlations between superfluidity and Bose condensation phenomena in helium-4

Nikolay M. Blagoveshchenskii, Vladimir Anatolyevich Parfenov, Alexander V. Puchkov

•Jan 1, 1982•0 citations

Superfluidity in Helium Clusters

M. V. Rama Krishna, K. Birgitta Whaley

Elsevier eBooks•Jan 1, 1993•1 citation
Clusters of He atoms formed in a supersonic free jet expansion have been studied by electron-bombardment ionization and mass spectrometry. Distinct magic-number enhancements of ion intensity are observed for clusters of 7, 10, 14, and 30 atoms for both helium isotopes, and for 23 atoms of 4He^{4}\mathrm{He}4He. Dramatic differences in the onset of cluster formation between the two isotopes may be related to the stability of 4He^{4}\mathrm{He}4He dimers.
The total cross sections of the helium dimer, trimer, and tetramer for scattering from Kr atoms have been measured for cluster beam velocities between 250 and 820 m/s. The dimer cross section is twice that of the atom within 5% indicating that the Kr atoms scatter from the He atoms independently, which is consistent with the large dimer bond distance of about 50 A. The trimer and tetramer cross sections are somewhat larger and can be described by an impulse approximation with a multiple "eclipse" correction, extending ideas of Glauber for high energy collisions with the deuteron.