Patent ID: 9721778
Date: 2017-08-01
CPC Classifications: H01J

Claim:
1. A mass spectrometer, comprising: an ionization chamber for ionizing a sample on its surface at an analysis point through irradiation by a laser beam; an analysis chamber having a mass spectroscope for detecting ions, an introduction pipe or an introduction hole provided at one location of said ionization chamber for introducing ions into the inside of said analysis chamber from the inside of a housing of said ionization chamber; an exhaust pipe formed inside the housing of said ionization chamber at another location of said ionization chamber; and a fan provided within the exhaust pipe for drawing air into said exhaust pipe, and wherein air that contains ions and/or fine particles generated from said sample, which have not been introduced into said introduction pipe or introduction hole, can be suctioned from said ionization chamber into said exhaust pipe when said fan is in operation, the ionization method implemented in said ionization chamber is a matrix-assisted laser desorption/ionization method or a laser desorption/ionization method.