- #1
dreens
- 40
- 11
- TL;DR Summary
- Curious whether people have a preferred gas for venting UHV.
Hi there,
I have a small, few liter UHV chamber that frequently needs to be vented and rebaked. I want to shorten my bake time, so I’ve obtained a glove box to allow me to vent, work and close back up under inert gas.
i’m curious if people have a preference between Argon and dry Nitrogen. I suspect the argon will provide higher purity by virtue of being heavier and excluding air from my glove box more effectively. But I also suspect that the residual argon will be more challenging for my ion pump and non evaporator getter combo to pump, compared with the nitrogen.
Thanks for any thoughts.
Dave
I have a small, few liter UHV chamber that frequently needs to be vented and rebaked. I want to shorten my bake time, so I’ve obtained a glove box to allow me to vent, work and close back up under inert gas.
i’m curious if people have a preference between Argon and dry Nitrogen. I suspect the argon will provide higher purity by virtue of being heavier and excluding air from my glove box more effectively. But I also suspect that the residual argon will be more challenging for my ion pump and non evaporator getter combo to pump, compared with the nitrogen.
Thanks for any thoughts.
Dave