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Permanent magnet polarizer

A polarizer and permanent magnet technology, used in instruments, scientific instruments, magnetic performance measurement, etc., can solve problems such as unintuitiveness, inconvenient exchange and measurement, and achieve the effect of extending service life

Active Publication Date: 2012-02-29
武汉中科极化医疗科技有限公司
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AI Technical Summary

Problems solved by technology

Commonly used photodetector + wavelength meter or power meter method - the exchange measurement is inconvenient and not intuitive; the wavelength scanning of the laser light source is required to observe the state of line width and absorption

Method used

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Embodiment 1

[0066] A kind of permanent magnetic polarizer, it comprises the first shading cover 1, the second shading cover 13, inner erosion grating laser 2, multi-core optical fiber 3, circular polarization / beam expander 4, laser beam 5, vapor / gas chamber 6, Heating wire 7, (single opening) vacuum valve 8, thermal insulation film 9, magnetic shielding cylinder 10, magnetic ring group 11, spectrometer 12, first glass tube 14, second glass tube 16, third glass tube 18, fourth glass Tube 21, fifth glass tube 23, deoxygenation tube 15, first (double opening) vacuum valve 17, second (double opening) vacuum valve 22, first (three opening) vacuum valve 19, second (three opening) vacuum valve Valve 24 , glass rod 20 , working gas inlet 25 , vacuum gas distribution port 26 , first polarized gas outlet 27 , and second polarized gas outlet 28 .

[0067] It is characterized in that: the first shading cover 1 is equipped with an inset grating laser 2, a multi-core optical fiber 3, and a circular pol...

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Abstract

The invention discloses a permanent magnet polarizer. In the permanent magnet polarizer, an internally-etched grating laser, a multicore optical fiber and a circular polarization / beam expander are arranged in a first light shield; a spectrometer is arranged in a second light shield; two ends of the multicore optical fiber are connected with the internally-etched grating laser and the circular polarization / beam expander respectively; a single-opening vacuum valve is connected with a steam / gas chamber; a first three-opening vacuum valve with an operating gas inlet and a vacuum gas distribution opening is connected with a third glass pipe, a first dual-opening vacuum valve, a second glass pipe, a deoxidation pipe and a first glass pipe sequentially and then is connected to the steam / gas chamber; a second three-opening vacuum valve with a first polarization gas outlet and a second polarization gas outlet is connected with a fifth glass pipe, a second dual-opening vacuum valve and a fourth glass pipe sequentially and then is connected to the steam / gas chamber; an electric heating wire and a heat-preserving membrane are wound on the outer wall of the steam / gas chamber sequentially; and a magnetic shielding cylinder is positioned outside a magnetic ring group, the heat-preserving membrane, the electric heating wire and the steam / gas chamber.

Description

technical field [0001] The present invention relates to the field of laser technology enhancing nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) signals, and more specifically relates to a permanent magnetic polarizer, which generates large-capacity, highly nuclear spin-polarized inert isotope gas by means of laser, Therefore, the sensitivity of signal detection can be greatly improved, and it is suitable for nuclear magnetic resonance / magnetic resonance imaging research of porous, surface and other materials and organisms, or for molecular biological probes. Background technique [0002] The method of enhancing the nuclear spin polarization of the noble isotope gas beyond the thermal equilibrium level can greatly improve the detection sensitivity of nuclear magnetic resonance / magnetic resonance imaging. Metastable optical pumping [Walters G.K. et al., Phys. Rev. Lett., 8(1962), 439.], spin exchange optical pumping (SEOP) [Chupp T.E. et al., Phys. Rev. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/00G01N24/08G01R33/20G01J3/28
Inventor 周欣孙献平刘买利叶朝辉
Owner 武汉中科极化医疗科技有限公司
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