A method for manufacturing an electron source includes {HEAD ~ the steps} of covering a substrate provided with a first electrode and a second electrode by a container, introducing {TAIL ~ a gas} composed of a carbon compound into the container, and forming a carbon film by applying a voltage between the first electrode and the second electrode 
of introducing
A method for manufacturing an electron source includes { HEAD ~ the steps } of covering a substrate provided with a first electrode and a second electrode by a container , introducing { TAIL ~ a gas } composed of a carbon compound into the container , and forming a carbon film by applying a voltage between the first electrode and the second electrode
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