Pattern measurement apparatus and pattern measurement method

摘要

A pattern measurement apparatus includes a beam intensity distribution creation unit to scan a charged particle beam over a reference pattern having edge portions formed at a right angle to create a line profile of the reference pattern and thus create a reference-beam intensity distribution, an edge width detection unit to determine line profiles for pattern models including edges formed at various inclination angles by use of the reference-beam intensity distribution and calculate edge widths reflecting an influence of a width of a reference beam, and a correspondence table creation unit to calculate correction values for edge positions from the calculated edge widths and the pattern models and create a correspondence table in which the edge widths and the correction values are associated with one another.