SVT Associates Phosphorus Valved Cracker provides
efficient, reliable and ultrapure phosphorus flux in a UHV environment. The source has three independently controlled
thermal zones with thermal isolation for optimum in-situ
conversion as well as reproducible evaporation. All heaters ensure proper outgassing, while water cooling is used to promote condensation in the reservoir region. Conversion from red to white Phosphorus ensures consistent and safe low temperature evaporation from the condensation reservoir. An all-metal needle valve allows rapid flux adjustment during operation. Cracking of the flux to P2 dimers occurs in the high temperature cracking zone. The bulk zone access port is at the rear, allowing for refills without having to remove the source from the growth chamber. An optional motor controlled valve is available for instantaneous flux control through feedback loop or for remote operation in process recipes
Features:
- Three independent, thermally isolated zones
- Ultra clean operation
- Red to white phosphorus conversion and collection for safe, reliable flux
- Source refill from rear without having to detach source
- Motorized valve and controller (optional)
- Integrated flux monitoring (optional)
Specifications | |
| Bulk Zone Crucible Size: | 200 cc |
| Operating Temperature (max): | 600 °C (bulk), 100 °C (condensor), 1300 °C (cracker) |
| Power Consumption (max): | 160 W (bulk), 300 W (cracker) |
| Temperature Stability: | +/- 0.1 °C |
| Standard In Vacuum Length: | 12″ (30.5 cm) |
| Electrical Connectors: | |
Photo of multi-zone phosphorus valved cracker
Plot of phosphorus flux versus valve position