Patent ID: 9633817
Date: 2017-04-25
CPC Classifications: G01M,H01J

Claim:
1. A diaphragm attaching member that is mounted in a charged particle beam apparatus including a charged particle optical lens tube which irradiates a sample with a primary charged particle beam, a housing which forms a part of the charged particle beam apparatus and the inside of which is subjected to evacuation of air so as to be in a vacuum state by a vacuum pump, and a diaphragm which enables a space, which is subjected to the evacuation of air so as to be in a vacuum state, to maintain an airtight state, and which transmits or allows the primary charged particle beam to pass therethrough, the diaphragm attaching member comprising: a diaphragm mounting portion to which a TEM target membrane, which is held in a base having the external shape with the longest portion of 2.8 mm to 3.2 mm in length, is attached as the diaphragm; and a housing fixing portion which is attached to the housing of the charged particle beam apparatus; wherein the diaphragm mounting portion has a convex shape.