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Bent crystal device
The crystal is the only device for X-ray band spectroscopy. The crystal and energy satisfy the Bragg equation. Scanning and selection of different energies can be achieved by rotating the crystal angle. Conventionally produced crystals are usually flat and have the ability to split light but cannot image. The crystal can be bent through a special process, which can increase the imaging function of the crystal device and improve the light collection efficiency of the instrument. It has a wide range of applications.
Transmission crystal spectrometer
The transmission bent crystal spectrometer uses Laue bent crystals to diffract X-rays of different energies to different positions on the recording surface, and at the same time uses an X-ray imaging plate for detection. This spectrometer has the characteristics of wide spectrum energy range and high spectral resolution, and is especially suitable for diagnosis of characteristic energy spectrum generated by the interaction between laser and solid target.
Spherical bent crystal spectrometer
he spherical bent crystal spectrometer uses spherical bent crystals as diffractive spectroscopic elements to achieve one-dimensional spectroscopy and one-dimensional focused imaging. It is widely used in spectral detection in the soft X-ray band (0.5-15keV) and can simultaneously achieve high brightness and High energy spectral resolution.
Von Hamos cylindrical bent crystal spectrometer
The Von Hamos cylindrical bent crystal spectrometer uses cylindrical bent crystals to focus the beam in the sagittal direction and disperse the light in the meridional direction. The spectrometer has the characteristics of high resolution and high efficiency. It can also scan or multi-channel the crystal. mode to obtain a wider spectrum measurement range.
Elliptical cylindrical bent crystal spectrometer
The elliptical cylindrical bent crystal spectrometer uses the elliptical cylindrical bent crystal as the light splitting and focusing element. The light source point and the slit are located at the two foci of the ellipse respectively. The X-rays pass through the bent crystal and converge at the slit. Afterwards, the detector is used to achieve energy spectrum measurement within a certain range. The system has the characteristics of wide energy range, high energy resolution and high efficiency.
Bent crystal imaging system
The curved crystal imaging system adopts a spherical (toroidal) curved crystal backlight imaging arrangement and utilizes the monochromatic effect of the curved crystal on fixed incident light to obtain a quasi-monochromatic projection imaging of the target object image at the corresponding imaging position.
Magnetic spectrometer
The magnetic spectrometer adopts an integrated design and consists of a radiation shield, a scatterer, an electron collimator, a magnet, a detector, etc. High-energy X-rays are converted into electrical signals through scatterers. Electrons of different energies have different deflection radii through magnetic fields. By measuring the electrical signals, the energy and intensity of the incident X-rays can be inferred.
Filter stack spectrometer
The filter stack spectrometer attenuates the bremsstrahlung radiation by stacking filters and recording media of different materials in a string, records its intensity, and then uses the response function of the spectrometer to invert the bremsstrahlung energy spectrum. The spectrometer is mainly composed of collimation components, filter chambers, lead shields, sights and structural supports. Through 11 different types of metal filters, it achieves energy range coverage of 0.1MeV-10MeV.
Flat field spectrometer
The flat-field spectrometer uses a holographic concave spherical variable line pitch grating for light splitting. It has flat-field characteristics and is convenient for recording spectra using an area array CCD. The grating works in grazing incidence mode and has high diffraction efficiency. At the same time, by selecting different grating models, full coverage of the wavelength range 0.6~200nm can be achieved.
Toroidal grating monochromator
The toroidal grating monochromator uses aberration-corrected toroidal grating for diffraction and spectroscopy, which can ensure high spectral resolution and luminous flux in a wide spectral range. By selecting different grating models, spectral coverage in the 10-300nm range can be achieved.
NIM type vacuum ultraviolet spectrometer
NIM type vacuum ultraviolet spectrometer adopts Seya-Namioka optical path structure. The incident slit and CCD detector are located on the Rowland circle, and can be used in monochromatic mode and spectral mode.
CT type vacuum ultraviolet spectrometer
The CT type vacuum ultraviolet spectrometer adopts the Czerny-Turner optical structure, which can spatially divide complex-colored light into a series of monochromatic light. The system consists of a plane diffraction grating, front and rear collimating focusing mirrors and CCD detectors.
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