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Sealed Proportional Counter Windows
Moxtek® Sealed Proportional Counter Windows allow high transmission of low-energy x-rays (including Boron).
These windows are ideal for sealed proportional counter applications that require analysis of light elements, such as: x-ray spectrometry and diffraction, process control, environmental, and RoHS/WEEE. Two options are available at Moxtek suited to the simultaneous and sequential applications (see data sheet).
| Features |
Benefits |
| Ultra-thin polymer film |
High transmission of low energy x-rays |
| Aluminum coating |
Charge dissipation
UV, IR, and Visible light rejection
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| DuraCoat® |
Corrosion resistant, hermetic seal |
| Silicon support structure |
High mechanical strength, durable |
| High purity |
Minimal spectral contamination |
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| Uniform thickness |
Consistent transmission across entire window |
Mechanical Strength
Moxtek Proportional Counter Windows provide high efficiency and excellent energy resolution while operating under extreme conditions (for example, high temperature and high humidity). Moxtek Proportional Counter Windows are composed of an ultra-thin layer of Moxtek polymer, a resistive DuraCoat®, a charge dissipative aluminum coating, and a strong support structure composed of silicon that makes them resistant to many solvents, acids, and basis. This window has withstood over 100,000 cycles at that same differential pressure without degradation in window performance. Pressure Limits: 1.2 atm frontal pressure, 0.3 atm backside pressure (leak rate of less than 5X10-10 mbar L/sec He).
Active Area and Dimensions
Moxtek Sealed Proportional Counter Windows have a maximum open area of 600 mm2. The grid open area is generally 76%.
Transmission Performance
Many variables contribute to the performance and lifetime of Proportional Counter Windows, for example, thickness and composition of the window, operating environment and electronics, used with the proportional counter. Typical transmission graph is shown below:
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