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Schlagwörter:
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Zusammenfassung:
In this thesis, the dielectronic recombination of neon, the charge exchange between highly
charged argon ions and neutral atoms and the radiative recombination of argon were studied
using time-of-flight data in an electron beam ion trap. Initially, the flight distance of ions
from the trap to the detector was determined to be sMCP = (74:7 +/- 0:19) cm by a charge state
determination through flight times of argon. For neon, it was possible to determine the charge
states in the time-of-flight to helium-like neon and lithium-like neon by using KLL-dielectronic
recombination data. With the flight distance and charge states determined, the time scale could
be calibrated. Thirdly, the intensity distribution of the charge states as a function of storage
time in the trap was measured for different injection pressures and eleketron beam currents.
The aim was to verify whether the recombination of the ions follows an exponential course,
the charge exchange depends on the pressure in the trap, and the radiative recombination
depends on the electron beam current. Due to rekombination in the ionization process it was
not possible to measure the highest generated charge state. The evaluation was performed on
Ar11+ and it was shown that not only recombination of Ar11+ but also recombination to Ar11+ from higher charge states was observed. Recombination to Ar11+ meant that a much more
complex model had to be used to describe the intensity profile of the peak. The recorded data
were not sufficient to validate this model.
