The SVTA-VC-45 Arsenic valved cracker provides optimal cracking efficiency and excellent flux uniformity for quality growth of III-V materials. Its unique design features two independently controlled thermal zones for the bulk evaporator and cracking head for generating pure Arsenic (As2) fluxes. The integrated water-cooling jackets for the bulk evaporator and valve body provide efficient cooling for the source.
A high purity crucible and selected materials for the cracking tube assembly guarantee high purity operating conditions. Implementation of the optional computer controlled valve (SVTA-VC-ACM) mechanism allows expanding versatility. It allows for precise and rapid control over the valve position during growth. The valve function can be integrated with RoboMBE process software. The valve aids in material growth and repeatability, but also eliminates charge oxidation while the growth chamber is up to atmospheric pressure for refilling other source charges.
Specifications | |
| Crucible Size: | 200 or 500 cc |
| Operating Temperature (max): | 800°C (bulk), 1300°C (cracker) |
| Mounting Flange: | 4.5″ CF |
| Standard In Vacuum Length: | 12″ (30.5 cm) |
| Power Consumption (max): | 160 W (bulk), 300 W (cracker) |
| Temperature Stability: | +/- 0.1 °C |
| Electrical Connectors: | Amphenol circular (filament), Omega sub-mini (T/C) |
| Access: | 25′ cable length standard (VCEC-25) |
Optional equipment:
- Power supply (VCPS-2)
- Temperature controller (VCTC-2)
- Motorized valve and controller (VC45-MRS)
jjPhoto of Arsenic valved cracker
Plot of Arsenic flux versus valve position