Ampoule Load and Seal
First, the quartz ampoules are attached to an oil-diffusion vacuum pump assembly. The system is evacuated and the ampoule is heated with a hydrogen/oxygen torch. Finally the end of the ampoule is sealed, which creates a charged and sealed quartz ampoule ready for furnace growth.
The following are potential hazards for ampoule load and seal.
Flammable Gases, Fire
- Possible ignition of flammable gases, resulting in fire and/or explosion. Employees may also be exposed to gases above permissible limits.
- See Possible Solutions: Flammable Gases, Fire.
- Use appropriate equipment, safety devices, and work practices associated with the hydrogen/oxygen torch.