Related Experiment Video
Updated: Feb 4, 2026
10:39
Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
10.1K
X-ray detector based on Mn doped MgAl2O4 and Si photodiode
Toru Katsumata1, Haruna Takeuchi1, Shuji Komuro1
1Faculty of Science and Engineering, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan.
The Review of Scientific Instruments
|October 4, 2018
Summary
Manganese-doped Magnesium Aluminate (MgAl2O4) crystals coupled with Silicon PIN photodiodes show promise as X-ray detectors. These detectors exhibit linear response and strong luminescence, indicating potential for practical applications.
Area of Science:
- Materials Science
- Solid-State Physics
- Detector Technology
Background:
- Developing efficient X-ray detectors is crucial for various applications, including medical imaging and industrial inspection.
- Luminescent materials offer a pathway for converting X-ray energy into detectable optical signals.
Purpose of the Study:
- To evaluate the luminescence properties of Manganese-doped Magnesium Aluminate (MgAl2O4) crystals for X-ray detection.
- To investigate the performance of MgAl2O4:Mn crystals coupled with Silicon PIN photodiodes (PDs).
Main Methods:
- Fabrication and characterization of Mn-doped MgAl2O4 crystals.
- Coupling MgAl2O4:Mn crystals with Silicon PIN photodiodes (PDs).
- Irradiation with CuKα X-rays to measure luminescence intensity and output signal linearity.
Main Results:
- MgAl2O4:Mn crystals exhibited green luminescence peaking at 520 nm under X-ray irradiation.
- The output signal from the Silicon PIN photodiode (PD) showed a linear increase with X-ray intensity.
- Optimal luminescence intensity was observed in specimens with 3.0 mol.% Mn doping, with weak afterglow in 2.0 mol.% Mn specimens.
Conclusions:
- Mn-doped MgAl2O4 crystals demonstrate suitable luminescent properties for X-ray detection.
- The combination of MgAl2O4:Mn crystals and Silicon PIN photodiodes (PDs) presents a viable option for X-ray detector applications.
Related Concept Videos
02:18X-ray Crystallography
26.2K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
26.2K
01:21Gas Chromatography: Types of Detectors-I
1.6K
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
1.6K
01:13Gas Chromatography: Overview of Detectors
2.0K
Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
2.0K
01:19Gas Chromatography: Types of Detectors-II
1.2K
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
1.2K
01:24X-ray Imaging
10.3K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
10.3K
01:15High-Performance Liquid Chromatography: Types of Detectors
1.7K
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...
1.7K