O'Keefe, Michael A., and Nelson, E. Chris. Defocus step size of the LBNL One Angstrom Microscope. United States: N. p., 2002.
Web. doi:10.2172/817235.
O'Keefe, Michael A., & Nelson, E. Chris. Defocus step size of the LBNL One Angstrom Microscope. United States. doi:10.2172/817235.
O'Keefe, Michael A., and Nelson, E. Chris. Tue .
"Defocus step size of the LBNL One Angstrom Microscope". United States.
doi:10.2172/817235. https://www.osti.gov/servlets/purl/817235.
@article{osti_817235,
title = {Defocus step size of the LBNL One Angstrom Microscope},
author = {O'Keefe, Michael A. and Nelson, E. Chris},
abstractNote = {The change in focus of a high-resolution electron microscope is generally assumed to be linear with change in objective lens current. Thus the defocus step size should be constant for a constant step in lens current. Measurements on the LBNL One-Angstrom Microscope show that the step size increases with increasing underfocus (reduced lens current). Differentiation of the best-fit quadratic shows that the defocus step size varies linearly as defocus changes.},
doi = {10.2172/817235},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 02 00:00:00 EDT 2002},
month = {Tue Jul 02 00:00:00 EDT 2002}
}