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キーワード:
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MPINP:
Präzisionsexperimente - Abteilung Blaum
要旨:
Alphatrap is a Penning-trap experiment aiming for the test of bound-state quantum
electrodynamics (QED) by measuring the g-factor of electrons bound in highly charged
ions up to hydrogen-like 208Pb81+. The high atomic number Z allows a test of boundstate
QED under highest field strengths. Cold ions are necessary for high-precision
measurements revealing the small additional effect of QED.
As a novel development, laser cooling of beryllium ions will be used to sympathetically
cool highly charged ions. The lower achievable temperatures are expected to further
increase the precision of the measurement. Additionally, new measurement schemes
such as simultaneous g-factor measurements on Coulomb crystallized ion pairs become
feasible.
In the context of this thesis, a concept for implementation of laser cooling at the
Alphatrap experiment using 313nm light was developed. The experiment specific
requirements on laser cooling in a Penning trap and sympathetic cooling are discussed
and the results of the commissioning of the laser system are presented.
