2006
DOI: 10.1103/physreva.73.021201
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Two-photon excitation of low-lying electronic quadrupole states in atomic clusters

Abstract: A simple scheme of population and detection of low-lying electronic quadrupole modes in free small deformed metal clusters is proposed. The scheme is analyzed in terms of the TDLDA (timedependent local density approximation) calculations. As test case, the deformed cluster N a + 11 is considered. Long-living quadrupole oscillations are generated via resonant two-photon (two-dipole) excitation and then detected through the appearance of satellites in the photoelectron spectra generated by a probe pulse. Femtose… Show more

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Cited by 2 publications
(15 citation statements)
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“…(t) = | d rφ [220] ( r, t)φ [220] ( r)| 2(3)turns out to contribute the complementing 99-97%. Similar relations were obtained for the direct two-photon (DTP) excitation of the quadrupole, described in[10]. During the…”
supporting
confidence: 76%
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“…(t) = | d rφ [220] ( r, t)φ [220] ( r)| 2(3)turns out to contribute the complementing 99-97%. Similar relations were obtained for the direct two-photon (DTP) excitation of the quadrupole, described in[10]. During the…”
supporting
confidence: 76%
“…In principle, the photoionization can be also provided by the coherent synchrotron source with high-frequency photons. Then the two-photon ionization proposed in [10] can be replaced by more effective one-photon ionization. In this case, the characteristics of the pump and Stokes pulses can be taken again from [10], while the parameters of the probe irradiation need an independent adjusting.…”
Section: E Proposed Experimentsmentioning
confidence: 99%
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