* Instituto Nacional de Astrofísica, Optica y Electrónica (INAOE), A.P.51 y 216 72000-, Puebla, Mexico
* Instituto de Geofísica (IGUNAM), 04510-CU, México D.F., Mexico
* at INAOE on leave from IGUNAM, Mexico
Abstract:
It is illustrated how the radiation from electron-capture following the interaction of energetic ions, during their acceleration, with ions and atoms of the local matter is a very useful tool for diagnostics of cosmic and laboratory particle processes.