超音速パルスバルブ
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THE EVEN-LAVIE SUPERSONIC PULSED VALUE
A miniaturized, high pressure, high speed pulsed valve for supersonic expansion, designed for scientific applications.
This high-pressure jet source enables the cooling of large aromatic molecules to temperatures lower than 1K. Due to its short opening time, the pumping requirements can be significantly reduced (300 l/s typical at 10-5 Torr and 10 Hz).
Pulse lengths down to 10 μs FWHM, at a pressure of 100 bars, have been achieved.
Potential applications
- Cold molecules (<10K)
- Cluster generation.
- Frequency tripling.
- Spectroscopy measurements.
- Gas dosing in surface research.
Technical specifications
- Max. repetition rate: 1000 Hz
- Max. stagnation pressure: 100 bars
- Temperature range: 200-5500K.
- Narrow beam Spread (200 FWHM).
- This valve is corrosion resistant; all exposed parts are inert (Stainless steel alloys, Oxide ceramics and polyimide).
Several models are available
- Room Temperature or elevated Temperature; Low repetition rate (up to 40 Hz) or High repetition rate (up to 1KHz).
- 1. Each can be mounted on a CF-100 or ISO-100 flange, or sold unmounted:
- 2. The room-temperature model can be supplied mounted on a CF 2¾” flange.
- 3. The Cryogenic model is sold unmounted and dissipates 3W at 1KHz.
The valves can be provided with an efficient, grounded coaxial hot filament ionizer mounted near the nozzle exit.
All models are supplied with a dedicated high-current pulse driver, which can be triggered externally (TTL) or internally, with a synchronized output pulse.