Volume 37, Number 7, March I 1997
|Page(s)||459 - 464|
|Section||Physics of gases, plasmas, and electrical discharges|
|Published online||01 September 2002|
Instabilities of ion confinement in a penning trap
Institut für Physik, Universität Mainz - D-55099 Mainz, Germany
Accepted: 24 January 1997
We have observed rapid ion loss from a Penning trap at certain operating conditions. Here the ratio of the cyclotron or axial oscillation frequency is an integer multiple of the “metastable" magnetron frequency. Higher-order contributions to the ideal quadrupole trapping potential causes energy transfer into the magnetron motion, whose orbit increases. This effect is analogous to the stop bands observed in accelerators and storage rings.
PACS: 52.25.Wz – Nonneutral plasmas / 52.20.Dq – Particle orbits / 05.45.+b – Theory and models of chaotic systems
© EDP Sciences, 1997
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