Convoy electrons emitted from resonant coherently excited ions

• Published in: Physical review letters Vol. 66; no. 1; pp. 25 - 28
• Main Authors: KIMURA, K, GIBBONS, J. P, ELSTON, S. B, BIEDERMANN, C, DESERIO, R, KELLER, N, LEVIN, J. C, BREINIG, M, BURGDOÊRFER, J, SELLIN, I. A
• Format: Journal Article
• Language: English
• Published: Ridge, NY American Physical Society 07-01-1991
• Subjects: 656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-); CARBON IONS; CHANNELING; CHARGE STATE; CHARGED PARTICLES; COHERENT RADIATION; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Condensed matter: electronic structure, electrical, magnetic, and optical properties; CROSS SECTIONS; DATA; ELECTROMAGNETIC RADIATION; Electron and ion emission by liquids and solids; impact phenomena; ELECTRON EMISSION; ELEMENTS; EMISSION; ENERGY DEPENDENCE; ENERGY LEVELS; ENERGY RANGE; Exact sciences and technology; EXCITED STATES; EXPERIMENTAL DATA; GOLD; Impact phenomena (including electron spectra and sputtering); INFORMATION; ION CHANNELING; IONS; METALS; MEV RANGE; MEV RANGE 10-100; NUMERICAL DATA; Other electron-impact emission phenomena; Physics; PROBABILITY; RADIATIONS; RESONANCE; TRANSITION ELEMENTS; YIELDS; Ions; Channeling; Electron emission; Experimental study; Excited state
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.66.25

We demonstrate the use of selective excitation of fast ions by resonant coherent excitation as a new technique to study convoy electron production. It is shown that electron loss from excited states plays an important role in convoy electron production by fast-channeled ions. The absolute cross section for convoy production by hydrogenic ions in {ital n}=2 states is derived from the dtaa, as is an estimate of the absolute probability of resonant coherent excitation as a function of ion energy.