The High-Temperature (HT) / catalysis / general-purpose ambient pressure cell enables photoemission measurements on catalytic and surface science-type systems at mbar pressures at temperatures up to 1000 C. At the moment, this is the only available sample environment at the solid-gas endstation. The Catalysis AP cell is currently being upgraded and will be available for users in 2025.
For the time-resolved APXPS using please the HT cell, please, check Time-resolved APXPS page.
| Purpose | To enable photoemission measurements at mbar pressures and up to 1000 C |
| Description | Small volume (1 L) cell with controllable gas supply. Standard setup for general users. |
| Base Pressure | 2 x 10-9 mbar |
| Sample manipulation | X, Y, Z Normal Emission. 55 deg synchrotron beam incidence (beam to surf normal) |
| Pressure range | 5 x 10-10 – 30 mbar in situ gauge 0.5 mbar – 30 mbar |
| Heaters | Direct laser (CW, 1080 nm) Up to 1000C in 10 mbar H2 PID controlled |
| Cooling | 9 C water. ca 20 C on sample |
| Sample holder type | Omicron flag style |
| Sample size | max 8 x 8 mm |
| QMS | Hiden HAL 3F/PIC Probe of inlet and outlet gas composition |
| Analyser apertures | 0.3 mm |
| Gas dosing (available 2018-I) | up to 8 individual gases (by user request) and their mixture. Fully automatic gas dosing system build-in fast (5 ms duty cycle) solenoid valves |
| Max flow rate | 30 sccm (one gas) |
| Manipulation | X, Y, Z. NE, 55 deg incidence (to surf. normal) |
| Availability | Available for general users |