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Stern-Gerlach Experiment Physics 243 Fall 2007. Chris Osborn Daniel Richman. Status Report. Components of the experiment Gradus ad parnassum Current stage Degas?. Components. detector – reads current from ions from potassium oven. Components. handle for detection rotation. Components.
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Stern-Gerlach ExperimentPhysics 243 Fall 2007 Chris Osborn Daniel Richman
Status Report • Components of the experiment • Gradus ad parnassum • Current stage • Degas?
Components detector – reads current from ions from potassium oven
Components handle for detection rotation
Components electromagnet driving coils
Components mechanical pump
Components diffusion pump water cooling pipes
Components potassium oven
Components pressure gauge via ionization
thermocouple gauge Components pressure gauge ionization gauge electrometer magnet power supply
Gradus ad parnassum • Evacuate chamber • mechanical to 10-2 mbar • diffusion to 4x10-5 mbar (with cooling) • Potassium oven • load potassium under nitrogen pressure • heat to 180 oC – 250 oC • Detect beam of particles • Do we have a collimated/directed beam? • Why aren’t we seeing a current on electrometer? • no consistent behavior of electrometer
Edgar Degas (1834 – 1917) Draughtsman, Painter, Sculptor A founder of the Impressionists, though he rejected the label