
( Brand: Oriel ), ( Manufacturer Part Number: 77341 ), ( Part Type: Tube )
The Oriel Instruments 77341 Photomultiplier Tube (PMT) is a high-performance, versatile photodetection instrument designed for applications in the fields of spectroscopy, astronomy, and laboratory research. This PMT offers an exceptional spectral range, covering wavelengths from 185 to 870 nanometers (nm), making it a valuable tool in a wide array of photon detection scenarios.
The Oriel 77341 PMT is equipped with a large photocathode area of 20mm , ensuring superior detection efficiency and excellent signal-to-noise ratio. The photocathode material used is a sensitive BaF2:Eu, which provides high quantum efficiency across the entire spectral range, ensuring optimal performance even with low-intensity light sources.
This PMT features a multi-stage dynode system, which amplifies the photons' signals effectively, allowing for the detection of single photons with high sensitivity. The dynode structure, comprising 9 dynodes, ensures a consistent and reliable output signal.
The Oriel 77341 PMT is housed in a robust, hermetically sealed glass envelope, ensuring optimal vacuum conditions for optimal performance. The tube is designed for easy integration into various experimental setups, with a standard base (B-259) for ease of mounting. Additionally, the PMT is compatible with various high-voltage power supplies, allowing for flexible operation in various experimental scenarios.
In summary, the Oriel Instruments 77341 Photomultiplier Tube is a versatile, high-performance photodetection instrument, ideal for applications requiring wide spectral range detection (185-870nm). With its large photocathode area, high quantum efficiency, and robust design, this PMT offers exceptional detection efficiency, single-photon sensitivity, and ease of integration into various experimental setups.
1. Wide Dynamic Range: The Oriel 77341 PMT offers a wide dynamic range, making it suitable for a variety of applications requiring high sensitivity.
2. Excellent Quantum Efficiency: This PMT has a high quantum efficiency, ensuring optimal signal collection in the specified wavelength range.
3. Good Photon Counting Rates: The photon counting rates are high, making it suitable for applications requiring fast response times.
4. Stable Performance: The PMT is known for its stability and reliability, ensuring consistent performance over time.
5. Versatile: The Oriel 77341 PMT can be used in various applications, including spectroscopy, fluorescence microscopy, and particle detection.
Cons:1. High Cost: The Oriel 77341 PMT is significantly more expensive compared to other PMTs in the market, which might be a deterrent for some buyers.
2. Limited Wavelength Range: The PMT is optimized for specific wavelengths (nm), which may not cover the entire spectrum for some applications.
3. Requires External HV Supply: Unlike some PMTs that have an integrated high voltage (HV) supply, the Oriel 77341 requires an external HV power supply, adding to the overall cost and complexity of the setup.
4. Potential for Afterpulsing: Afterpulsing, a phenomenon where secondary electrons are emitted after the original photon event, can occur, leading to false counts.
Conclusion:The Oriel Instruments 77341 Photomultiplier Tube is a high-performance, versatile, and reliable PMT suitable for applications requiring high sensitivity, fast response times, and excellent quantum efficiency in the specified wavelength range. However, its high cost, limited wavelength range, requirement for an external HV power supply, and potential for afterpulsing are drawbacks that should be carefully considered before making a purchase decision.
Recommendation:If the application's requirements fall within the PMT's specifications and the potential drawbacks are acceptable, the Oriel Instruments 77341 Photomultiplier Tube is a solid choice. It is recommended to thoroughly evaluate other PMT options, compare their specifications, and consider the total cost of ownership before making a final decision.
Oriels lock-in digital amplifier, model Lidia-Sr's-kit, may be used to help separate signals from the background noise. PMS are the most sensitive single channel detector offered by Oriel instruments, making them an excellent choice for low-light measurements. The photomultiplier tube covers 185 to 870 nm range with a peak wave length of 330.