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Capillary array: a new type of window for the vacuum ultraviolet
Applied Optics
|March 10, 2010
Summary
Glass capillary arrays and differential pumping enable high pressure differences for vacuum ultraviolet radiation experiments. This method allows excellent radiation transmission, overcoming material limitations in VUV spectroscopy.
Area of Science:
- Optical Physics
- Vacuum Technology
- Materials Science
Background:
- Optical experiments often need to separate regions of differing pressure.
- Vacuum ultraviolet (VUV) radiation presents challenges due to limited transparent materials below 1050 Å.
Purpose of the Study:
- To develop a method for sustaining large pressure differences in VUV experiments.
- To enable radiation transmission between high and low-pressure regions in the VUV spectrum.
Main Methods:
- Utilizing glass capillary arrays (GCAs).
- Implementing differential pumping techniques.
- Combining GCAs with differential pumping for pressure separation.
Main Results:
- Successfully sustained large pressure differences between two regions.
- Achieved excellent transmission of VUV radiation.
- Overcame the limitations of bulk materials for VUV transmission.
Conclusions:
- Glass capillary arrays combined with differential pumping are effective for VUV experiments.
- This technique facilitates VUV radiation transmission across significant pressure gradients.
- Provides a viable solution for pressure separation challenges in VUV research.
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