Mass spectrometer
First Claim
1. A mass spectrometer comprising:
- a mass spectrometry part for conducting mass spectrometry on a sample gas;
a sample gas introducing piping part for introducing a sample gas into said mass spectrometry part;
an opening/closing mechanism disposed between said sample gas introducing piping part and said mass spectrometry part to open/close thereby to control passage of said sample gas;
an opening/closing control part for controlling said opening/closing mechanism;
a first pump for evacuating for a side region of said opening/closing mechanism opposite to said mass spectrometry part;
an evacuation pipe for connecting said first pump and said sample gas introducing piping part together; and
an ion source disposed on a side region of said opening/closing mechanism which is the same as said mass spectrometry part and which converts said sample gas into ions.
167 Assignments
0 Petitions
Accused Products
Abstract
A mass spectrometer having a resolution improved by introducing ions into a mass spectrometry part with a high efficiency is provided with a small-sized, simple configuration. The mass spectrometer includes an opening/closing mechanism provided between a sample introducing piping part for introducing a sample into the mass spectrometry part and the mass spectrometry part to conduct gas introduction intermittently and control sample passage. The mass spectrometer further includes a pump mechanism to evacuate a high pressure side of the sample introducing piping part, that is, an opposite side of the opening/closing mechanism to the mass spectrometry part to have a pressure in a range of 100 to 10,000 Pa.
36 Citations
12 Claims
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1. A mass spectrometer comprising:
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a mass spectrometry part for conducting mass spectrometry on a sample gas; a sample gas introducing piping part for introducing a sample gas into said mass spectrometry part; an opening/closing mechanism disposed between said sample gas introducing piping part and said mass spectrometry part to open/close thereby to control passage of said sample gas; an opening/closing control part for controlling said opening/closing mechanism; a first pump for evacuating for a side region of said opening/closing mechanism opposite to said mass spectrometry part; an evacuation pipe for connecting said first pump and said sample gas introducing piping part together; and an ion source disposed on a side region of said opening/closing mechanism which is the same as said mass spectrometry part and which converts said sample gas into ions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification