Abstract
The effect of a significant (by a factor of more than 107) increase in the rate of a one-photon spontaneous radiative transition is calculated for an excited atom (molecule) located near a metal (silver) nanocylinder. The atom radiates into a surface plasmon wave of the TM0 type. The TM0 wave is concentrated near the nanocylinder surface rather than spreads infinitely in space. Having a limited length, the nanocylinder efficiently radiates into free space, in contrast to the case of an infinite surface (plane or cylindrical). Under the conditions considered, the duration of the atomic dipole radiation is about a femtosecond. The situation discussed, which can be easily realized in experiments, may help in understanding the significant increase in the intensity of Raman scattering observed experimentally.
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