Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 50: Precision spectroscopy of atoms and ions II (with A)
Q 50.7: Vortrag
Donnerstag, 3. März 2016, 12:45–13:00, f428
Precise high voltage measurements based on laser spectroscopy — •Kristian König, Phillip Imgram, Jörg Krämer, Bernhard Maaß, Tim Ratajczyk, Johannes Ullmann, and Wilfried Nörtershäuser — Institut für Kernphysik, TU Darmstadt
The ALIVE experiment at the TU Darmstadt is a new collinear laser spectroscopy setup. The goal of the experiment is the measurement of high voltages in the range of 10 to 100 kV using precise laser spectroscopy of ions with a well-known transition frequency [1]. The aim is to achieve a precision of at least 1 ppm, which is of interest for many applications.
The setup consists of an ion source that provides 40Ca+ ions and an acceleration region between two chambers of which one is equipped with a fluorescence detection. The well-known 4s1/2 → 4p3/2 and the 3d3/2 → 4p3/2 transitions are used to identify the ion velocities before and after acceleration based on the Doppler shift as proposed in [2]. In order to obtain the targeted accuracy, precise control and knowledge of the ion beam properties is required. We present the current status of the experiment.
[1] O. Poulsen, Nucl. Instr. Meth. Phys. Res. 202 (1982) 503.
[2] S. Götte, et al., Rev. Sci. Instrum. 75 (2004) 1039.