title: Interaction of electrons with light metal hydrides in the transmission electron microscope.
abstract: Transmission electron microscope (TEM) observation of light metal hydrides is complicated by the instability of these materials under electron irradiation. In this study, the electron kinetic energy dependences of the interactions of incident electrons with lithium, sodium and magnesium hydrides, as well as the constituting element effect on the interactions, were theoretically discussed, and electron irradiation damage to these hydrides was examined using in situ TEM. The results indicate that high incident electron kinetic energy helps alleviate the irradiation damage resulting from inelastic or elastic scattering of the incident electrons in the TEM. Therefore, observations and characterizations of these materials would benefit from increased, instead decreased, TEM operating voltage.
authors.affiliation: Creative Research Institution of Hokkaido University, N21W10, North Ward, Sapporo 001-0021, Japan wang@eng.hokudai.ac.jp.
authors.forename: Yongming
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Graduate School of Engineering, Hokkaido University, N13-W8, North Ward, Sapporo 060-8628, Japan.
authors.forename: Takenobu
authors.initials: T
authors.lastname: Wakasugi
authors.affiliation: Creative Research Institution of Hokkaido University, N21W10, North Ward, Sapporo 001-0021, Japan Graduate School of Engineering, Hokkaido University, N13-W8, North Ward, Sapporo 060-8628, Japan.
authors.forename: Shigehito
authors.initials: S
authors.lastname: Isobe
authors.affiliation: Graduate School of Engineering, Hokkaido University, N13-W8, North Ward, Sapporo 060-8628, Japan.
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Hashimoto
authors.affiliation: Graduate School of Engineering, Hokkaido University, N13-W8, North Ward, Sapporo 060-8628, Japan.
authors.forename: Somei
authors.initials: S
authors.lastname: Ohnuki
keywords: elastic scattering; electron irradiation; inelastic scattering; light metal hydrides; transmission electron microscope