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UV source UVS 40A2
High intensity photon source that can be operated with a variety of discharge gases.
- Description
- Technical Data
- Features
- Options
Description
The UVS 40A2 is used in UPS (ultraviolet photoelectron spectroscopy) research. The UVS is water cooled for maximum stability and features fully interlocked safety circuitry. The discharge has a maximum photon intensity at a pressure of several mbar so dual differential pumping stages are employed in order to maintain the host chamber pressure. The UVS 40A2 is designed so that a continuous gas flow is maintained through the discharge region. This is a great advantage in maintaining the cleanliness of the discharge capillary and results in very long service intervals.
| Mounting flange | DN 40 CF (non-rotatable) |
| Gases | He, Ar (option: Kr, Xe, Ne) |
| Photocurrent | 1 – 80 nA |
| Photon flux | >1016 photons / s*sr |
| He I / He II ratio | better than 3:1 |
| Water cooling | required, pressure 2 – 3 bar (max. 6 bar), flow > 1.5 l/min, Tmax= 30 °C |
| Port aligner | integral , +/- 4° |
| Discharge current | 40 – 300 mA |
| Beam divergence | small beam divergence: <1° |
| Capillary I.D. | 1.5 mm (others on request) |
| Insertion length | 220 mm (standard), other on request, OD: 9.5 mm |
| FWHM | dependent on working distance (e.g. 1.2 mm for distance 10 mm) |
| Typical working distance | 5 – 100 mm (optimum 5 – 50 mm) |
| Bakeout temperature | up to 200 °C |
| Working pressure | < 1 mbar |
- Can be operated with various discharge gases
- Manual or auto ignition
- Control of the He I / He II ratio via precise adjustment of helium pressure and discharge current
- Easy operation
- Stable output
- Special designed discharge chamber
- Electronically stabilised discharge current
- Windowless, direct sight connection
- Gas dosing system
- Customised insertion length
- Linear shift (50 – 100 mm)
- Vacuum Gauges set
- Chiller
