NMR probe

Patent metadata

Field	Value
Publication number	US-10088538-B2
Application number	US-201615014444-A
Country	US
Kind code	B2
Filing date	Feb 3, 2016
Priority date	Feb 6, 2015
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

An inner container including a tube body is provided in an outer container. With this structure, the inside of the outer container is separated into a primary airtight chamber and a sub airtight chamber (upper airtight chamber and lower airtight chamber). A detection circuit is placed in the primary airtight chamber. The detection circuit is a tuning and matching circuit having a transmission and reception coil serving as an NMR detection element and a variable capacitor. An additional member including an additional element such as a capacitor is inserted into the upper airtight chamber, and the additional member is set on a top terminal mounting member and a bottom terminal mounting member. With this structure, the additional element is electrically connected to the detection circuit and a characteristic of the detection circuit is changed.

First claim

What is claimed is:

1. An NMR probe comprising:
an outer container;
an inner container provided in the outer container and that separates an inside of the outer container into a primary space and a sub space serving as a passageway;
a basic electronic circuit placed in the primary space and that includes an NMR detection element; and
an additional member placed in the sub space in a manner to allow insertion and removal during a tuning range change in which a tuning range of the basic electronic circuit is changed, and that has at least one additional element that is electrically connected to the basic electronic circuit in a state of being placed in the sub space.

2. The NMR probe according to claim 1 , wherein
the primary space is formed as an airtight space, and
the NMR probe further comprises a cooling mechanism that cools the basic electronic circuit and the additional member.

3. The NMR probe according to claim 1 , further comprising:
a plug provided at an entrance/exit of the sub space and that opens and closes the entrance/exit; and
a gate provided in the sub space between a holding position of the additional member, where the additional element is electrically connected to the basic electronic circuit, and the entrance/exit and that opens and closes partway in the sub space, wherein
in its closed state the gate separates the sub space into a first space having the holding position and a second space on the entrance/exit side.

4. The NMR probe according to claim 3 , further comprising:
a first suctioning unit that suctions an inside of the first space; and
a second suctioning unit that suctions an inside of the second space.

5. The NMR probe according to claim 1 , wherein
the additional member includes a body, a one-side electrode, and an other-side electrode, and
the NMR probe further comprises:
a one-side connection member that connects the one-side electrode to a first connection point of the basic electronic circuit in a state where the additional member is placed in a holding position in the sub space; and
an other-side connection member that connects the other-side electrode to a second connection point of the basic electronic circuit in a state where the additional member is placed in the holding position.

6. The NMR probe according to claim 1 , further comprising:
a plug that blocks an entrance/exit of the sub space while allowing movement of the additional member within the sub space in a state where the additional member is inserted into the sub space.

7. The NMR probe according to claim 1 , wherein
the NMR probe comprises a plurality of the inner containers,
a plurality of the sub spaces are formed by the plurality of the inner containers, and
the additional member is placed in a manner to allow insertion and removal in each of the plurality of the sub spaces.

Assignees

• Jeol Ltd

Inventors

• Mizuno Takashi
• Takegoshi Kiyonori
• Fujioka Koji

Classifications

• G01R33/3635

  Multi-frequency operation · CPC title

• G01R33/3403

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

• G01R33/3628 Primary

  Tuning/matching of the transmit/receive coil · CPC title

• G01R33/3621

  NMR receivers or demodulators, e.g. preamplifiers, means for frequency modulation of the MR signal using a digital down converter, means for analog to digital conversion [ADC] or for filtering or processing of the MR signal such as bandpass filtering, resampling, decimation or interpolation · 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