Crystallographic metrology and process control

Details Crystallographic metrology and process control Crystallographic metrology and process control

2008-03-11

2008-03-11

Wells, Nikita (Department: 2881)

Radiant energy

Inspection of solids or liquids by charged particles

C250S307000, C250S310000, C117S902000

Reexamination Certificate

active

07342225

ABSTRACT:
A system (70) for crystallography including a sample holder (74), an electron source (76) for generating an electron beam, and a scanning actuator (80) for controlling the relative movement between the electron beam and the crystalline sample, the scanning actuator being controllable for directing the electron beam at a series of spaced apart points within the sample area. The system also includes an image processor (84) for generating crystallographic data based upon electron diffraction from the crystalline sample and for determining whether sufficient data have been acquired to characterize the sample area. The system further includes a controller (86) for controlling the scanning actuator to space the points apart such that acquired data is representative of a different grains within the crystalline sample. IN other embodiments, the invention includes one or more ion beams (178, 188) for crystallography and a combination ion beam/electron beam (218, 228).

REFERENCES:
patent: 5463977 (1995-11-01), Manada et al.
patent: 6577970 (2003-06-01), Houge et al.
patent: 2006/0048697 (2006-03-01), Houge et al.

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