Evolution of oscillator spectrum in periodic potential

• Main Authors: Buts, V.A., Yegorov, A.M., Marekha, V.I., Tolstoluzhsky, A.P.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2007
• Series: Вопросы атомной науки и техники
• Subjects: Plasma electronics
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/110534

Spectral power of the oscillator radiation, which moves in periodically inhomogeneous potential, is investigated analytically and numerically. Spectrum of the nonrelativistic oscillator can have a maximum at high numbers of harmonics of basic frequency. Amplitudes of potential at which the motion of oscillator become irregular are found. In relativistic case a small value of potential practically not influence on character of spectrum. The dependence of high-frequency range of spectrum from value of potential inhomogeneity period is investigated. With decreasing of inhomogeneity period the spectrum maximum is shifting into short-wave range. In linear approximation the dispersion equation for oscillation excitation by ensemble of oscillators at frequency, which corresponds to the maximum of radiation spectrum of single oscillator is found.