【摘要】 本文描述了利用多孔板测量脉冲强流电子束发射度的原理和方法。考虑了空间电荷和轴向磁场对测量的影响。实验参量是阴极形状、阳极网孔、二极管距离和电压、电流幅值。在直线感应加速器上、用天鹅绒平面阴极和腐蚀的钨网阳极,当束能为1.32MeV、束流为2kA时,测得均方根发射度ε_rm=79cm.mrad,相应规一化亮度B_n=4.8×10³A/（cm.rad）²。更多还原

【Abstract】 The principle and method of emittance measurements for pulsed intense electron beams using a multipinhole pin mask is described in the article.The effects of space charge and axial magnitic field on the measurements were considered . The experimental parameters were cathode type , anode mask texture . diode spacing and voltage ,and beam current. A Em (rms value of the emittance) of 79 cm.mrad was obtained with a planar velvet cathode an etched tungsten mask anode at the beam energy (E) of 1.32 MeV and the beam current (I) of 2kA on the LIA, corresponding normalized brightness (B ) was 4.8 × 10 A (cm.rad ) .更多还原