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AssigneeHitachi High-Tech Corporation
InventorsTsukasa SHISHIKA, Shinji YOSHIOKA, Koji ISHIGURO
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A mass spectroscope is capable of suppressing decreases in spectral sensitivity and resolution due to deformation during assembly of a multipole electrode. The mass spectroscope includes a multipole rod electrode having a plurality of rod pairs that are composed of pre-rods and main rods that are connected in the direction of an ion optical axis via an insulation member. In the multipole rod electrode, the pre-rods constitute pre-rod electrode portions, and the main rods constitute main rod electrode portions. The diameter of an inscribed circle on which the pre-rod electrode portions surround the ion optical axis is equal to the diameter of the inscribed circle on which the main rod electrode portions surround the ion optical axis, and the diameter of all of the pre-rods of the multipole rod electrode is greater than the diameter of the main rods connected to the pre-rods.
A mass spectroscope comprising a multipole rod electrode having a plurality of rod pairs, the rod pairs including pre-rods and main rods that are connected in the direction of an ion optical axis via an insulation member, in the multipole rod electrode, the pre-rods configuring pre-rod electrode portions, the main rods configuring main rod electrode portions,
A method for assembling pre-rods and main rods of a mass spectroscope, comprising:
Dependencies are inferred from the claim text.