介绍了对一台脉冲线加速器驱动虚火花放电装置产生的电子束发射度的测量工作。在十隙虚火花放电室中充以15Pa的氮气，产生能量为约200 keV、束流2000 A、直径为1 mm的高亮度电子束。在距阳极5 cm处测得电子束的均方根发射度εrms≈48 mm·mrad, 规一化发射度εn≈47 mm·mrad。

We report the emittance measurement of a electron beam produced in a pseudospark discharge device driven by a pulse line accelerator. A ten gap pseudospark device was operated at 200 kV, with anitrogen gas fill presure of 15 Pa. Small diameter (～1 mm) electron beam with current about 2 kA has been generated. The rms emittance of the beam is measured to be ε rms ≈ 48 mm·mrad about 5 cm downstream of the anode plane. The normalized emittance is then found to be ε n≈ 47 mm·mrad.