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.
A Semiconductor Bridge (SCB) explosive initiator has many advantages such as shorter action time, better ignition consistency and higher reliability. The development of a SCB has traditionally been guided by an experimental approach. Experiments conducted worldwide show that the melting and vaporization of a SCB when heated by an electrical current is a very complex physical process. In this process,...
In this paper, two different kinds of QMSs, micro-chamber quadrupole mass spectrometer(MCQMS) and miniature quadrupole mass spectrometer(MQMS), are compared from structure and their performance like small volume and low weight, stable working time, easy to fabricate, mass resolution and sensitivity, respectively. The analysis shows that MCQMS has better performance than that of QMS, such as smaller...
The Ba and BaO evaporation rates of a thermionic cathode have been measured at 145 K and 170 K above the typical operating temperature being about 1033 K. According to the measurement result, the relationship between cathode lifetime and operation temperature has been discussed. A comparison life test also be done between a poisoned but reactivated cathode and a normal one under the same condition...
Tetrapod zinc oxide (T-ZnO), being a kind of nano-scale material, has a large specific surface area and high surface binding energy, which will make it sensitive to ambient gases; hence, the field emission (FE) properties of this ZnO nanomaterial will be influenced by gas adsorption. The effect of methane on the field emission of T-ZnO emitters was investigated. It was found that CH4 enhanced the...
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.