Berlin 2001 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

A: Atomphysik

A 20: Atoms in Fields

A 20.7: Vortrag

Freitag, 6. April 2001, 17:15–17:30, H1058

Peculiarities of cyclotron radiation from fast atomic ions. — •Vladimir Melezhik — P.N.T.P.M., Universite Libre de Bruxelles, Campus Plaine CP229, B-1050 Brussels, Belgium

In work [1] we have shown that atomic ions moving in a magnetic field generate monochromatic radiation with the cyclotron frequency w=QB/M, depending on the field strength B and the ion mass M and charge Q. The origin of the effect is the interaction of the bound electron with the oscillating field of the Stark term coupling the center of mass and electronic motions of an ion due to the nonseparability of the collective and internal degrees of freedom in the system. It was estimated that the radiation power for the He+ ion moving in field B= 4 a.u. exceeds by a few order of magnitude the synchrotron radiation (SR) power from the structureless pseudoparticle with mass of He+ and unit charge and considerably exceeds the SR from the electron moving with the same velocity in the same B. In the present report we discuss the ionic radiation for lower magnetic fields accessible at present-day laboratories and the possibility to use the effect as an amplifier of the cyclotron radiation. [1] V.S. Melezhik, Phys. Rev. A59, 4833 (1999)