Decay of hollow atoms in Ne{sup 10+}-C{sub 60} collisions

Journal Article · Thu Apr 01 04:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.043202· OSTI ID:20641008

Martin, S; Chen, L; Bredy, R; Bernard, J ^[1]; Salmoun, A ^[1]; Wei, B ^[2]

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1. Laboratorie de Spectrometrie lonique et Moleculaire, Universite Lyon 1, UMR CNRS 5579, Campus de la Doua, 69622 Villeurbanne Cedex (France)
2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)

We have studied the decay of hollow atoms formed in Ne{sup 10+}-C{sub 60} collisions at low energy (E=100 keV). The decay products of hollow atoms, i.e., the scattered projectiles and the number of ejected electrons from autoionization cascades, have been measured. The projectile energy loss has been analyzed as a function of the final charge state, in order to differentiate collisions at large distance, near the C{sub 60} through the electronic clouds and inside the C{sub 60} cage. For scattered projectiles Ne{sup 8+} where two electrons are stabilized (s=2), up to 16 ejected electrons have been observed, and lower energy loss compared to projectiles with more stabilized electrons (s>2) has been measured. These results are interpreted by the formation and relaxation of completely neutralized compact hollow atoms passing very close to the C{sub 60} molecule (into the electron clouds). The observed large number of ejected electrons is explained by a direct filling of the N shell during the interaction time and a fast decay via quasicomplete autoionization cascades.

• OSTI ID: 20641008
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 69; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC CLUSTERS
ATOMS
AUTOIONIZATION
CATIONS
CHARGE STATES
DECAY
ELECTRONS
ENERGY LOSSES
FULLERENES
ION-MOLECULE COLLISIONS
KEV RANGE
MOLECULES
N SHELL
NEON
RELAXATION