Help with Photomultiplier Tubes specifications:
Photomultiplier Type
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| Side-on Photomultiplier | These detectors are more economical than end-on models, have the fastest rise times and are ideal for photometry and spectrophotometry applications. Their vertical configuration takes up less space than the end-on versions. They mount in the standard or pulsed housings. The main disadvantage of these tubes is their non-uniform sensitivity. | ||
| End-on Photomultiplier | Sometimes known as head-on photomultipliers, these detectors offer better spatial uniformity and photosensitive areas from tens of square millimeters to hundreds of square centimeters. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
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Active Area
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| Active Area Diameter or Length: | The area of the active part of the detector. The diameter of the active area if circular, the length of the active area otherwise. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Active Area Height: | If the active area of the detector is not circular, the height of the active area. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Photomultiplier Performance
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| Spectral Response Range: | The spectral response range of incident light the photomultiplier tube detects, also called wavelength range. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||
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| Sensitivity: | A measure of the effectiveness of a detector in producing an electrical signal at the peak sensitivity wavelength. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Rise Time: | The time necessary for a detector's output to go from 10% to 90% of its final value. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Applied Voltage: | The Anode to Cathode Voltage for the Photomultiplier Tube. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Gain: | The factor by which the current generated by a photon is increased before the signal is detected, also known as current amplification. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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Photomultiplier Noise
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| Dark Current: | The current associated with a detector during operation in the dark with an applied voltage. Increased temperature and applied voltage will result in increased dark current. Also, larger active areas will generally have a higher dark current. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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| Noise Equivalent Power (NEP): | The power of incident light, at a specific wavelength, required to produce a signal on the detector that is equal to the noise. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
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