The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Electron emission from single hot carbon nanotubes (CNTs) heated by self-Joule heating is in situ studied inside a scanning electron microscope (SEM) and the emitted electrons are detected by the Everhart-Thornley detector. Periodic pulsed electron emission is observed to overlap on a dc background. The period of the pulses is measured to be 292 ms with no dependence on the bias voltage applied to...
The effect of pyroelectric polarization was investigated with respect to electron sources and X-ray applications. Different pyroelectric Lithium Tantalate (LiTaO3) crystals were used. Main focus was the optimization of electron emission efficiency in dependence of geometrical parameters, temperature curves and vacuum pressures. The presented results and experimental experiences provide a basis for...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.