EPR spectrometer with at least one pole shoe at least partially made of functional material
A technology of functional materials and spectrometers, applied in instruments, magnetic objects, measuring magnetic variables, etc., can solve the problems of adding magnet systems, increasing manufacturing and operating costs, etc.
Pending Publication Date: 2022-06-24
BRUKER BIOSPIN
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Problems solved by technology
However, adding a magnet system will greatly increase its manufacturing and operating costs
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[0076] figure 1 A first embodiment of the EPR spectrometer 1 of the present invention is schematically shown. The EPR spectrometer 1 includes a magnet system 2 and a probe 3 .
[0077] The magnet system 2 here comprises three magnets 4, namely a permanent magnet 5 and two electromagnets 6a, 6b. The magnet system 2 also comprises a yoke structure 7 made of ferromagnetic material, generally based on ferrous alloys and having a substantially C-shape, for guiding and enhancing the generated magnetic flux. The yoke structure may alternatively be shaped as a window frame, can core, or any other suitable structure (not shown). Here, the electromagnets 6a, 6b or their windings are arranged on the upper and lower arms of the yoke structure 7, respectively. exist figure 1 On the right side of the yoke structure 7, at opposite ends of the yoke structure 7, the yoke structure 7 is equipped with pole pieces 8a, 8b.
[0078] The permanent magnets 5 are here integrated into the back of ...
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Abstract
An electron paramagnetic resonance (EPR) spectrometer having: a magnet system comprising at least one magnet and at least one pole shoe, preferably a pair of pole shoes, for generating a magnetic field in a field of view in front of or between the at least one pole shoe, where the magnetic field is generated along a pole axis; a probe comprising a microwave resonator and at least one modulation or fast scanning coil for generating an additional time-varying magnetic field aligned along a polar axis, where the probe is arranged in the field of view and a corresponding modulation or fast scanning coil is arranged between the microwave resonator and a corresponding pole shoe; characterized in that for each pole shoe having a modulation or fast scanning coil arranged between the pole shoe and the microwave resonator, at least a portion of the pole shoe facing the modulation or fast scanning coil is made of a functional material having an electrical conductivity [sigma] f of 104 sag / m or less and a saturation magnetic flux density BSf of 0.2 T or more. Also proposed is an EPR spectrometer which allows a compact and inexpensive design while allowing the EPR to perform measurements at low energy consumption and low noise levels.
Description
technical field [0001] The present invention relates to an electron paramagnetic resonance (EPR) spectrometer, which has: [0002] - a magnet system comprising at least one magnet and at least one pole piece, preferably a pair of pole pieces opposed to each other, for generating a magnetic field in the field of view in front of the pole piece or between the pair of pole pieces, [0003] wherein the magnetic field is generated along a polar axis; [0004] - a probe comprising a microwave resonator and at least one modulation coil or fast scanning coil for generating an additional time-varying magnetic field aligned along the polar axis, [0005] wherein the probe is arranged in the field of view, [0006] And wherein the corresponding modulation coil or fast scanning coil is arranged between the microwave resonator and the corresponding pole piece. Background technique [0007] Such an EPR spectrometer is known from Gunnar Jeschke's presentation "Einführung in die ESR-Spek...
Claims
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IPC IPC(8): G01R33/60
CPCG01R33/60G01R33/383G01R33/3806H01F7/202
Inventor I·普瑞瑟卡鲁L·黑尼肯
Owner BRUKER BIOSPIN