Pseudospark discharge is a kind of gas discharge Which occurs at high voltages(10kV—【1MV) and low pressures (1—100Pa) in a special axial symmetric geometry—the so-called pseudospark chamber (PSC). The device with ...Pseudospark discharge is a kind of gas discharge Which occurs at high voltages(10kV—【1MV) and low pressures (1—100Pa) in a special axial symmetric geometry—the so-called pseudospark chamber (PSC). The device with an insulator disc being in-serted between a hollow cathode (HC) and a plane anode both with a common centralchannel is called the single-gap PSC. We call stacks of alternative insulator and展开更多
This is a report of the emittance and brightness measurement of an electron beam produced in a pseudospark discharge device driven by a pulse line accelerator. A ten_gap pseudospark device was operated at 200 kV, in a...This is a report of the emittance and brightness measurement of an electron beam produced in a pseudospark discharge device driven by a pulse line accelerator. A ten_gap pseudospark device was operated at 200 kV, in a nitrogen gas fill pressure of 15 Pa. The typical value of emittance was measured to be 47 mm·mrad about 5 cm downstream of the anode plane. The dependence of the beam current, HWHM emittance, the normalized emittance, and the normalized brightness on the axial distance from the anode were obtained. The highest brightness is about 2.7×10 12 A/(mrad)\+2 near the anode, and is still higher than 10 10 A/(mrad)\+2, 160 mm downstream of the anode. Such a high quality electron beam can be used for Raman free electron laser, X ray laser producing, and high power microwave.展开更多
基金Project supported by the National Natural Science Foundation of China.
文摘Pseudospark discharge is a kind of gas discharge Which occurs at high voltages(10kV—【1MV) and low pressures (1—100Pa) in a special axial symmetric geometry—the so-called pseudospark chamber (PSC). The device with an insulator disc being in-serted between a hollow cathode (HC) and a plane anode both with a common centralchannel is called the single-gap PSC. We call stacks of alternative insulator and
文摘This is a report of the emittance and brightness measurement of an electron beam produced in a pseudospark discharge device driven by a pulse line accelerator. A ten_gap pseudospark device was operated at 200 kV, in a nitrogen gas fill pressure of 15 Pa. The typical value of emittance was measured to be 47 mm·mrad about 5 cm downstream of the anode plane. The dependence of the beam current, HWHM emittance, the normalized emittance, and the normalized brightness on the axial distance from the anode were obtained. The highest brightness is about 2.7×10 12 A/(mrad)\+2 near the anode, and is still higher than 10 10 A/(mrad)\+2, 160 mm downstream of the anode. Such a high quality electron beam can be used for Raman free electron laser, X ray laser producing, and high power microwave.
