NMR detection module

Patent metadata

Field	Value
Publication number	US-9372247-B2
Application number	US-201313971903-A
Country	US
Kind code	B2
Filing date	Aug 21, 2013
Priority date	Aug 23, 2012
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

An NMR (nuclear magnetic resonance) detection module (such as an NMR probe) mounted in a vacuum vessel permits a transmit/receive coil to be cooled efficiently and to be placed closer to a sample container. The NMR detection module includes a core module (detection module) ( 54 ) consisting of a refrigerant block ( 118 ) and a transmit/receive coil formed on the inner surface of a detection hole ( 130 ). A sleeve (cylindrical partition wall) ( 122 ) forming a part of the vacuum vessel is inserted in the detection hole ( 130 ). A sample tube ( 56 ) is inserted in the sleeve ( 122 ). The refrigerant block ( 118 ) is connected to a heat exchanger via a support member ( 82 ). Since it is not necessary to form a bobbin inside the transmit/receive coil, the distance between the coil and the sample can be set small. The coil is entirely surrounded by the refrigerant block.

First claim

The invention claimed is:

1. An NMR detection module for detecting a magnetic resonance signal emanating from a sample, the detection module being mounted in a vacuum vessel that is inserted in a static magnetic field generator, said NMR detection module comprising:
a cooling block made of a heat conducting material thermally coupled to a cooling source that is placed in the vacuum vessel, the cooling block being provided with a detection hole in which a sample container is inserted; and
a detection coil mounted on an inner surface of the detection hole and surrounded and cooled by the cooling block.

2. The NMR detection module as set forth in claim 1 ,
wherein said sample is a solid sample,
wherein said detection hole has a central axis tilted at a given angle to the direction of a static magnetic field,
wherein a cylindrical partition wall forming a part of said vacuum vessel is disposed in said detection hole out of contact with the detection coil, and
wherein a vacuum layer is formed between the detection coil and the cylindrical partition wall.

3. The NMR detection module as set forth in claim 2 , wherein said cooling block has a front-end portion containing said detection hole and a base-end portion thermally coupled to said cooling source, and wherein said cooling block extends continuously from the front-end portion to the base-end portion.

4. The NMR detection module as set forth in claim 3 , wherein said cooling block is a rectangular parallelepiped in shape.

5. The cooled NMR detection probe having an NMR detection module as set forth in claim 2 ,
wherein said cooling block extends perpendicularly to the central axis of said detection hole,
wherein a support member is mounted between said cooling source and said cooling block and holding the cooling block to the cooling source,
wherein the support member extends parallel to the central axis of the detection hole from the cooling source, and
wherein the cooling block is raised from and fixed to the support member.

6. The NMR detection module as set forth in claim 1 , wherein said detection hole is formed on the inner surface of the detection hole along and throughout the central axis of the detection hole, and wherein a thickness of said cooling block taken along the central axis of the detection hole is equivalent to a length of the detection coil taken along the central axis of the detection hole.

7. The NMR detection module as set forth in claim 1 , wherein said detection coil is made of a belt-like conductive film formed on the inner surface of said detection hole.

8. The NMR detection module as set forth in claim 7 ,
wherein said cooling block has a first surface and a second surface in which a first opening and a second opening of said detection hole are respectively formed,
wherein a belt-like first extraction electrode connected with a first end of the detection coil is formed on the first surface, and
wherein a belt-like second extraction electrode connected with a second end of the detection coil is formed on the second surface.

Assignees

• Univ Kyoto
• Jeol Resonance Inc

Inventors

• Takegoshi Kiyonori
• Mizuno Takashi

Classifications

• G01R33/34053

  Solenoid coils; Toroidal coils · CPC title

• G01R33/3403 Primary

  Means for cooling of the RF coils, e.g. a refrigerator or a cooling vessel specially adapted for housing an RF coil · CPC title

• G01R33/307

  specially adapted for moving the sample relative to the MR system, e.g. spinning mechanisms, flow cells or means for positioning the sample inside a spectrometer · CPC title

• G01R33/31

  Temperature control thereof · CPC title