NaI(TI) scintillator detectors – גלאי סינטילציה

NaI(TI) scintillator detectors – גלאי סינטילציה

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NaI(TI) scintillator detectors – גלאי סינטילציה

NaI(TI) scintillator detectors – גלאי סינטילציה

האות ממכפיל האור מעובד עם מגביר היברידי בעל עוצמה נמוכה

Features:

  1. NaI(TI) crystal size: 1.0″x1.0″, 1.5″x1.5″, 2.0″x2.0″ and 3.0″x3.0″
  2. Suitable for X -ray and Gamma-ray spectroscopy
  3. High resolution spectroscopy: <7.5% or better FWHM @ 662Kev
  4. Built-in Ultra stable High Voltage
  5. Built-in Preamplifier and spectroscopic amplifier
  6. Low power comsumption(225 mW)
  7. Ruggedized assembly

Specifications:

  1. Sodium Iodide crystal: 1.0″x1.0″, 1.5″x1.5″, 2.0″x2.0″ and 3.0″x3.0″
  2. PMTs: 1.0″, 1.5″, 2.0″ and 3.0″ fast linear focussed
  3. High Voltage regulation: 300-1500 V(20 turn screw potentiometer at back of assembly)
  4. Power supply: +5V +/-0.5 V
  5. Test point: Present at back of assembly(1V=1KV)
  6. Power requirement: 250 mV
  7. Electrical connnections: 4-core shield cable

Spectroscopy amplifier:

  1. Output impedance: 50 Ω
  2. Pluse shape: 20 ns rise time, 3us fall time
  3. Maximum output: +6.8 V
  4. Energy resolution: <7.5% or better FWHM @ 662Kev

NaI(TI) scintillator detectors – גלאי סינטילציה

A NaI(Tl) scintillator detector converts ionizing radiation into light flashes, which are then measured to determine the radiation’s energy and intensity. Its key advantages are high light yield and excellent energy resolution for gamma-ray detection, making it a cornerstone in nuclear physics and medical imaging.

Here are 10 similar products that are in high demand today.

1. High-Purity Germanium (HPGe) Detectors

HPGe detectors are semiconductor devices that directly convert radiation energy into an electrical signal. They are in top demand for applications that require the highest possible energy resolution, such as in nuclear forensics, environmental monitoring, and research. While they require cryogenic cooling with liquid nitrogen to function, their superior resolution makes them the gold standard for gamma spectroscopy.

2. Cadmium Zinc Telluride (CZT) Detectors

CZT detectors are a type of semiconductor detector that can operate at room temperature, which is a major advantage over HPGe. Their high energy resolution and compact size make them highly sought after for portable applications, including handheld radiation monitors, medical probes, and security screening devices. The market for CZT detectors is experiencing robust growth.

3. Bismuth Germanate (BGO) Scintillators

BGO is an inorganic crystal scintillator with very high density and effective atomic number, making it highly efficient at stopping gamma rays. While its light output is lower than NaI(Tl), its excellent stopping power is critical for applications like Positron Emission Tomography (PET), where detecting high-energy gamma rays with high efficiency is paramount.

4. Lanthanum Bromide (LaBr3​(Ce)) Scintillators

This is a modern, high-performance inorganic scintillator. It boasts a very high light output, excellent energy resolution, and a very fast decay time, outperforming NaI(Tl) in many respects. These characteristics make it highly desirable for homeland security, oil and gas exploration, and nuclear physics research.

5. Plastic Scintillators

Plastic scintillators are an alternative to crystal scintillators, known for their low cost, fast response time, and mechanical ruggedness. Although they have a lower light yield and efficiency for gamma rays compared to NaI(Tl), they can be easily fabricated into large sheets or custom shapes. They are in high demand for large-scale applications like cosmic ray detection, portal monitors, and high-energy physics experiments.

6. Liquid Scintillators

These detectors use scintillating chemicals dissolved in a liquid. Their primary use is in liquid scintillation counting (LSC), a technique used to measure low-energy beta particles and alpha particles. The ability to mix the radioactive sample directly with the scintillator makes it an extremely efficient method for applications in biomedical research and environmental monitoring.

7. Silicon Photomultipliers (SiPMs)

While not a scintillator themselves, SiPMs are a modern, solid-state alternative to the traditional photomultiplier tubes (PMTs) that are used to read out the light from scintillators. SiPMs are compact, rugged, and operate at a lower voltage. The demand for SiPMs has exploded because they enable the creation of smaller, more robust detector systems for medical imaging, LiDAR, and high-energy physics.

8. Gas-Filled Detectors (e.g., Geiger-Müller Tubes)

These detectors use a gas that becomes ionized by radiation, and the resulting electrical signal is measured. The Geiger-Müller (GM) tube is the most common example. While they cannot identify the type of radiation or its energy, they are in massive demand for general-purpose radiation surveys due to their simplicity, sensitivity, and low cost.

9. Cherenkov Detectors

These detectors are used to identify high-energy charged particles by detecting the Cherenkov radiation (light emitted when a particle travels faster than the speed of light in a medium). While they have a lower light output than scintillators, the directionality of the light is critical for particle identification in high-energy physics.

10. Radiation Survey Meters

These are complete, portable instruments that integrate a detector (often a GM tube, NaI(Tl), or CZT) with electronics and a display. They are in high demand across a wide range of industries for health and safety purposes, including for first responders, hazmat teams, and in industrial settings for quickly measuring radiation levels in the field.

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