Mainz 2026 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 36: Poster – Ultra-cold Atoms, Ions and BEC (joint session A/Q)

A 36.19: Poster

Donnerstag, 5. März 2026, 17:00–19:00, Philo 1. OG

Characterizing Radio Frequency-Induced Pressure Variations in Glass-Cell Vacuum Systems — •Vicente Baca, Alexander Guthmann, Louisa Kienesberger, Felix Lang, David Gopalan, Eleonora Lippi, and Artur Widera — RPTU Kaiserslautern-Landau

In recent years, radio-frequency (RF) magnetic fields have become increasingly important tools in ultracold-atom and quantum-gas experiments. Because many of these experiments rely on glass-cell vacuum chambers, where stable ultra-high vacuum (UHV) is critical, it is essential to verify that the presence of an RF coil (or any source of time-dependent magnetic fields) does not compromise vacuum integrity. In the present work a tunable RF coil was placed near a quartz glass-cell and driven over the MHz regime while monitoring the chamber pressure in real time. We observe frequency dependent pressure variations correlated with the magnitude of the applied RF field. The results contribute to understanding RF-induced perturbations in UHV environments and enhance the design of vacuum systems that incorporate RF fields.

Keywords: radio frequency; ultra-high vacuum; glass-cell