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 simplified model of leader development based on physical and engineering approximations for laboratory long gap discharges under switching impulses was proposed and tested. The model was derived from the physical analysis proposed by Bondiou-Gallimberti and the engineering approximation for the potential drop on the tip of the leader proposed by Rizk. The calculated leader development characteristics with this model were compared with experimental results and numerical models. The proposed model is in close agreement with the existing published data. The calculation method was applicable to long gaps with rise times higher than 100 ??s.