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Equipment and Materials ♦ news digest


plasma and transient chemistry, reaction kinetics, catalytic processes.


The system typically operates in pressure regimes from 5 mbar to 5 bar, and mass spectrometer options provide for measurement of neutrals, positive ions, negative ions and ion energies, with choice of mass range up to 2500 amu.


BaySpec Nunavut InGaAs detector


Thermoelectric (air) deep-cooling goes down to -60°C while water cooling is an option down to -100°C. Featuring real-time data acquisition, the detector comes in a single 5 volt power supply design.


BaySpec claims it is offering, for the first time in instrumentation history, an affordable, accurate and ruggedised spectral detector.


The Nunavut series employs the latest in opto- electronic components to bring maximised sensitivity at a very competitive price. When matched to a BaySpec NIR-SWIR or Raman spectrograph the firm says the latest addition to its portfolio is a compact, high performance, cost- effective instrument. Each camera is calibrated in the factory after extensive thermal cycling.


The control electronics read out the processed digital signal to extract required information. Both the raw data and the processed data are available to the host. Optimal cooling of the detector arrays allows for greatly improved low-light spectral measurements and reduced dark noise.


Hiden reveals molecular beam mass spectrometer


The tool is designed for reactive process monitoring


The Hiden HPR-60 mass spectrometer is a research tool designed specifically for direct analysis of ions, radicals and neutral species in reactive processes such as MOCVD.


It will be of interest to researchers in the fields of January/February 2013 www.compoundsemiconductor.net 203


Hiden HPR-60 system with EQP plasma ion monitor


The system samples direct from the process using a sequence of up to three pressure reduction stages with intermediate aligned beam skimmer cones, providing a sampling range from 5 mbar to 100 mbar for the two-stage system and to 5 bar with the third stage.


The configuration forms a supersonic molecular beam for direct, near collision-free transfer of sampled species direct to the UHV-operating mass spectrometer. The potential of each skimmer stage can be independently biased to enhance beam focussing and transmission of ionised species.


An integrated molecular beam chopper is available as a system option for automated simultaneous acquisition of foreground/background data, enabling real time display of the molecular beam intensity with instantaneous subtraction of the beam background signal.


Vacuum system operation is fully automated and systems are provided with integral over-pressure protection. A custom-engineering service is available for design of any required system-to- process interface.


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