Sample manipulator employing a gas-thermal switch designed for high pressure experiments in an ultrahigh vacuum apparatus

摘要: A sample manipulator with a gas‐thermal switch was designed for high pressure surface science experiments in an ultrahigh vacuum (UHV) apparatus. The coupled the mount to cryostat using helium gas. When gas present and thermal on, cooling time constant τ∼2.6 min. evacuated, isolated could be easily warmed room temperature ∼5 min small ceramic heater. built part of internal chamber. chamber obtain pressures as 100 Torr only excursions ΔP≊1–2×10−10 UHV Recovery back conditions occurred minutes after gases or condensable materials such H2O. This note details rationale mechanical design this