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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 50 (1990), S. 535-539 
    ISSN: 1432-0649
    Keywords: 42.50 Md ; 68.35 Ja ; 82.20 Rp ; 82.80 Ch
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We discuss the possibility of observing photon echoes in the infrared range from a surface monolayer. Three different detection schemes are considered: direct infrared detection, external up-conversion, and in-situ up-conversion. The external up-conversion scheme appears most promising, while the in-situ up-conversion scheme has the advantage of being highly surface specific. Dephasing relaxations of surface vibrational excitations should be measurable.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0649
    Keywords: 29.25 ; 32.80.Pj ; 35.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The anharmonic potential felt by a single-species ions confined in a rf quadrupole trap which results from a non-ideal trap configuration and the charge distribution of the ion cloud is studied. The rf resonance-absorption spectra are explained by a Duffing oscillator and a representation of the line-shape parameter η is derived. Forη 〉 0.77, the electric signals will exhibit hysteresis. The relation with the anharmonic potential is discussed.
    Type of Medium: Electronic Resource
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