摘要:
The present invention maintains a stable emission amount from an emitter. In an embodiment of the present invention, a solid sample or a liquid sample is heated to gasify an object to be measured contained in the solid sample or the liquid sample, thereby forming a neutral gaseous molecule, and a metal ion emitted from an emitter having an oxidized surface is attached to the neutral gaseous molecule to ionize the neutral gaseous molecule, which is subjected to mass spectrometry. The solid sample or the liquid sample is a sample that emits a reducing gas by heating. The heating for gasifying the object to be measured is performed at a temperature lower than the vaporization temperature of the solid sample or the liquid sample and not less than the vaporization temperature of the object to be measured, and an oxidizing gas is provided to the emitter.
摘要:
An ion attachment mass spectrometer includes an attached ion generation unit which generates attached ions by attaching positively charged metal ions to the molecules of a measurement target substance, and a mass spectrometry unit which performs mass spectrometry of the attached ions. The mass spectrometry unit includes a mass separation chamber to select attached ions having a specific mass number from the attached ions, an ionization chamber to dissociate the attached ions having the specific mass number, and a mass analysis chamber to analyze the dissociated ions.
摘要:
[Objection of the invention]An ion beam generator, a thermal distortion in a grid assembly is reduced. [Structure to solve the objection]Thermal expansion coefficients αP, αM and αG, for a sidewall (1A) of a discharge chamber, mounting platform (40) and extraction grid electrode assembly (20) are selected to have a relation: αP>αM≧αG. For example, the material of discharge chamber sidewall is stainless steel o aluminum, the material of grids is Mo, W or C and the material of platform is Ti or Mo.
摘要:
[Objective of the Invention] An ion beam generator, a thermal distortion in a grid assembly is reduced.[Structure to Solve the Objective] Thermal expansion coefficients αP, αM and αG, for a sidewall (1A) of a discharge chamber, mounting platform (40) and extraction grid electrode assembly (20) are selected to have a relation: αP>αM≧αG. For example, the material of discharge chamber sidewall is stainless steel o aluminum, the material of grids is Mo, W or C and the material of platform is Ti or Mo.
摘要:
A mass spectrometer includes an ionization chamber (100) which generates fragment-free ions to be detected from an introduced gas to be detected, and a mass spectrometer chamber (140) including a mass spectrometer (160) which fractionates by mass the ions to be detected that are transported from the ionization chamber and which detects the ions. The mass spectrometer further includes a probe (111) which holds a liquid sample or a solid sample and causes the liquid sample or the solid sample to generate the gas to be detected upon heating by a heating means, and a gas introduction means (170) which introduces a predetermined gas from the probe to the ionization chamber to transport, to the ionization chamber, the gas to be detected that is generated at the probe.
摘要:
The present invention maintains a stable emission amount from an emitter. In an embodiment of the present invention, a solid sample or a liquid sample is heated to gasify an object to be measured contained in the solid sample or the liquid sample, thereby forming a neutral gaseous molecule, and a metal ion emitted from an emitter having an oxidized surface is attached to the neutral gaseous molecule to ionize the neutral gaseous molecule, which is subjected to mass spectrometry. The solid sample or the liquid sample is a sample that emits a reducing gas by heating. The heating for gasifying the object to be measured is performed at a temperature lower than the vaporization temperature of the solid sample or the liquid sample and not less than the vaporization temperature of the object to be measured, and an oxidizing gas is provided to the emitter.
摘要:
A mass spectrometer includes an ionization chamber (100) which generates fragment-free ions to be detected from an introduced gas to be detected, and a mass spectrometer chamber (140) including a mass spectrometer (160) which fractionates by mass the ions to be detected that are transported from the ionization chamber and which detects the ions. The mass spectrometer further includes a probe (111) which holds a liquid sample or a solid sample and causes the liquid sample or the solid sample to generate the gas to be detected upon heating by a heating means, and a gas introduction means (170) which introduces a predetermined gas from the probe to the ionization chamber to transport, to the ionization chamber, the gas to be detected that is generated at the probe.