Power discharge cavity, method and device for measuring the air gap breakdown threshold based on the power discharge cavity

• Main Authors: HUANG TAO, CONG PEITIAN, LUO WEIXI, QIU MENGTONG, ZHAI RONGXIAO
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2017
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention provides a power discharge cavity, a method and a device for measuring the air gap breakdown threshold based on the power discharge cavity. The method comprises: generating initial electrons on the central surface of a cathode through the focusing of pulse lasers; gradually increasing the laser energy to realize the critical breakdown of the air gap wherein the number of the generated initial electrons is regarded as the air gap breakdown threshold; applying the initial electrons at this time to a voltage condition where the initial electrons do not reproduce themselves and detecting the current generated from their movement; performing the current integration and then, obtaining the number threshold of the initial electrons of the air gap breakdown. According to the method and device for measuring the number threshold of initial electrons of air gap breakdown, it is possible to conveniently and effectively measure the number threshold of initial electrons required by air gap breakdown under the