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MAGNETISM MEASURING DEVICE, MANUFACTURING METHOD OF MAGNETISM MEASURING DEVICE, gas cell, AND MANUFACTURING METHOD OF GAS CELL

A magnetic measurement and manufacturing method technology, applied in magnetic resonance measurement, magnetic field measurement using magneto-optical equipment, single-equipment manufacturing, etc., can solve the problem of protruding ampoules, inability to generate alkali metal gas, and decline in manufacturing yield, etc. question

Inactive Publication Date: 2017-08-08
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for example, when the ampoule is inserted from the opening provided on the storage tank and accommodated in the storage tank, and the opening is blocked by the sealing part for sealing, when the ampoule is stored from the process of storing the ampoule to the handling of the sealing process and sealed by the sealing part , the ampoule may protrude from the opening to the outside of the storage tank
In addition, when the ampoule is irradiated with laser light, if the position of the ampoule deviates from the laser irradiation position due to individual variation, or if the ampoule is unstable in the storage tank, and the ampoule is shaken by the impact of laser irradiation, it may be possible to use laser irradiation. Machining in the depth direction will not progress, resulting in no generation of alkali gas
If these situations occur, it will lead to a decrease in the manufacturing yield and an increase in the manufacturing workload due to reasons such as reprocessing

Method used

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  • MAGNETISM MEASURING DEVICE, MANUFACTURING METHOD OF MAGNETISM MEASURING DEVICE, gas cell, AND MANUFACTURING METHOD OF GAS CELL
  • MAGNETISM MEASURING DEVICE, MANUFACTURING METHOD OF MAGNETISM MEASURING DEVICE, gas cell, AND MANUFACTURING METHOD OF GAS CELL
  • MAGNETISM MEASURING DEVICE, MANUFACTURING METHOD OF MAGNETISM MEASURING DEVICE, gas cell, AND MANUFACTURING METHOD OF GAS CELL

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0082]

[0083] refer to figure 1 , the configuration of the magnetism measuring device according to the first embodiment will be described. figure 1 It is a block diagram showing the configuration of the magnetism measuring device of this embodiment. The magnetometer 100 according to this embodiment is a magnetometer using nonlinear magneto-optical rotation (NMOR). The magnetism measuring device 100 is used as a living body state measuring device (magnetocardiometer or magnetoencephalometer) for measuring tiny magnetic fields emitted from a living body, such as a magnetic field from the heart (magnetism) and a magnetic field from the brain (magnetism). wait). The magnetism measuring device 100 can also be used in a metal detector or the like.

[0084] like figure 1 As shown, the magnetometer 100 includes a light source 1, an optical fiber 2, a connector 3, a polarizer 4, a gas chamber 10, a polarized light separator 5, a photodetector (photodetector: PD) 6, a photodetecto...

no. 2 approach

[0131] The second embodiment has substantially the same configuration as the first embodiment, except that the solid substance containing alkali metal is a pellet instead of an ampoule. For the composition of the air chamber of the second embodiment and the pills used in the air chamber, refer to Figure 7A , Figure 7Band Figure 8A Be explained. In addition, the same code|symbol is attached|subjected to the component common to 1st Embodiment, and the description is abbreviate|omitted.

[0132] 〈The composition of the pill〉

[0133] First, the configuration of a pellet as a solid substance containing an alkali metal according to the second embodiment will be described. Figure 8A It is a perspective view of the pill of the second embodiment. Such as Figure 8A As shown, the pill 30 of the second embodiment is, for example, substantially cylindrical. The diameter Φ of the cylindrical shape of the pill 30 is, for example, about 1 mm, and the height t of the cylindrical s...

Deformed example 1

[0153] The magnetic measuring device and the gas chamber of the above-described embodiment are constituted by a concave portion in which the holding portion provided in the storage tank is sunken in the longitudinal direction and have an inclined surface, but the present invention is not limited to this configuration. The holding part may have a configuration other than the above-described embodiment. Figure 11A , Figure 11B as well as Figure 11C It is a partial plan cross-sectional view showing a configuration example of a gas chamber according to Modification 1. FIG. Figure 11A , Figure 11B as well as Figure 11C equivalent to Figure 2B The top sectional view shown.

[0154] Such as Figure 11A As shown, the chamber part 12A of the air chamber 10B has the holding part 11 which consists of the recessed part sunk from the wall surface 16a in the longitudinal direction to the -X direction side in the storage tank 16. The surface 11a of the holding portion 11 along ...

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Abstract

The invention provides a magnetism measuring device, a manufacturing method for the same, a gas cell and a manufacturing method for the same. The magnetism measuring device can improve production efficiency and prevent decrease of rate of finished products and increase of manufacturing procedure numbers. The magnetism measuring device (100) which measures a magnetic field, includes: a gas cell including a cell portion (12) which includes a main chamber (14), a reservoir (16)that communicates with the main chamber (14)and has a longitudinal direction, and an opening (14)that is provided in the longitudinal direction of the reservoir on a side opposite to the main chamber, a sealing portion (19)which seals the opening, and an alkali metal gas (13)filling the main chamber (14)and the reservoir(16); and a holding portion (17)provided in the reservoir along the longitudinal direction.

Description

technical field [0001] The present invention relates to a magnetic measuring device, a gas chamber, a method of manufacturing the magnetic measuring device, and a method of manufacturing the gas chamber. Background technique [0002] There is known an optical pumping type magnetometer that irradiates linearly polarized light to a gas cell sealed with an alkali metal gas, and measures a magnetic field from the rotation angle of the polarized light plane. Patent Document 1 discloses a magnetic force measuring device including a gas chamber in which an ampoule filled with an alkali metal is housed in a storage tank (ampoule storage chamber), and formed in a glass tube of the ampoule by irradiating a laser beam to the ampoule. The through hole evaporates the alkali metal in the ampoule, and the vapor (gas) fills the main chamber from the storage tank through the through hole. [0003] However, for example, when the ampoule is inserted from the opening provided on the storage ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/032G01R33/26
CPCG01R33/032G01R33/26G01R33/0052
Inventor 藤井永一长坂公夫
Owner SEIKO EPSON CORP