Channels of Potential Energy Dissipation during Multiply Charged Argon-Ion Bombardment of Copper

Journal Article · Fri Jun 01 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.225503· OSTI ID:20951454

Kost, D; Facsko, S; Moeller, W; Hellhammer, R; Stolterfoht, N ^[1]

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1. Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden-Rossendorf, 01314 Dresden (Germany)

The dissipation of potential energy of multiply charged Ar ions incident on Cu has been studied by complementary electron spectroscopy and calorimetry at charge states between 2 and 10 and kinetic energies between 100 eV and 1 keV. The emitted and deposited fractions of potential energy increase at increasing charge state, showing a significant jump for charge states q>8 due to the presence of L-shell vacancies in the ion. Both fractions balance the total potential energy, thus rendering former hypotheses of a significant deficit of potential energy obsolete. The experimental data are reproduced by computer simulations based on the extended dynamic classical-over-the-barrier model.

• OSTI ID: 20951454
• Journal Information: Physical Review Letters, Vol. 98, Issue 22; Other Information: DOI: 10.1103/PhysRevLett.98.225503; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARGON IONS
CALORIMETRY
CHARGE STATES
COMPUTERIZED SIMULATION
COPPER
ELECTRON SPECTROSCOPY
EV RANGE 100-1000
EXPERIMENTAL DATA
ION BEAMS
KINETIC ENERGY
L SHELL
MULTICHARGED IONS
POTENTIAL ENERGY
VACANCIES