6533b872fe1ef96bd12d3886
RESEARCH PRODUCT
Helium bubbles in metals: Molecular-dynamics simulations and positron states.
Risto M. NieminenKjeld O. Jensensubject
PhysicsMolecular dynamicsAnnihilation ratePositronchemistryBubblePhysics::Atomic and Molecular ClustersPhysics::Accelerator Physicschemistry.chemical_elementPhysics::Atomic PhysicsElectronAtomic physicsHeliumdescription
By combining molecular-dynamics results for the aluminum-helium interface with positron-state calculations it is demonstrated that a positron is trapped at the surface of a He bubble in Al. The annihilation rate with Al electrons is similar to that at a clean surface, while simultaneously there is a significant annihilation rate with He electrons. This enables one to obtain a useful relation between the positron lifetime and helium densities in bubbles.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-02-01 | Physical review. B, Condensed matter |