Patent ID: 7663103

Claim:
A line-width measurement adjusting method, which is used when first and second electron beam intensity distributions for measuring a line width are produced from intensity distribution images of secondary electrons obtained respectively by scanning a first irradiation surface distance with an electron beam at first magnification, and by scanning a second irradiation surface distance with an electron beam at second magnification, the line-width measurement adjusting method comprising the step of adjusting the second electron beam intensity distribution of the electron beam at the second magnification such that the second electron beam intensity distribution is equal to the first electron beam intensity distribution of the electron beam at the first magnification; wherein the electron beam intensity distribution is expressed by an amount of electron beam per unit distance assuming that the amount of electron beam is measured for each unit distance in a scanning direction by scanning with the electron beam, and wherein a value of the electron beam intensity distribution is obtained by firstly dividing the electron beam intensity distribution in half in the scanning direction, that is, into a primary electron beam intensity distribution and a secondary electron beam intensity distribution, and by then finding a difference in distance between a center of mass of the primary electron beam intensity distribution and a center of mass of the secondary electron beam intensity distribution.