公开(公告)号：US09564283B2

公开(公告)日：2017-02-07

申请号：US14408085

申请日：2012-06-14

申请人： Oscar Hemberg ,  Tomi Tuohimaa ,  Per Takman

发明人： Oscar Hemberg ,  Tomi Tuohimaa ,  Per Takman

IPC分类号： H01J29/62 ,  H01J35/04 ,  H01J35/08 ,  G21K1/08 ,  G21K5/04 ,  H01J35/14

CPC分类号： H01J29/62 ,  G21K1/08 ,  G21K5/04 ,  H01J35/04 ,  H01J35/08 ,  H01J35/14 ,  H01J2235/082 ,  H01J2235/16

摘要： In an electron irradiation system, a gas-tight housing encloses a cathode region and an irradiation region, which communicate through at least an aperture. In the cathode region, there is arranged a high-voltage cathode for emitting an electron beam. In the irradiation region, there is an irradiation site arranged to accommodate a stationary or moving object to be irradiated. The migration of cathode-degrading debris is limited by means of an electric field designed to prevent positively charged particles from entering the cathode region via the aperture. The invention can be embodied with an axial electric field, which realizes an energy threshold, or a transversal field which deflects charged particles away from trajectories leading into the cathode region.

摘要翻译： 在电子照射系统中，气密壳体包围通过至少一个孔连通的阴极区域和照射区域。 在阴极区域中设置有用于发射电子束的高电压阴极。 在照射区域中，存在被配置为容纳待照射的静止或移动物体的照射部位。 阴极降解碎屑的迁移通过设计用于防止带正电荷的颗粒经由孔径进入阴极区域的电场而受到限制。 本发明可以用实现能量阈值的轴向电场或使带电粒子远离导入阴极区域的横向场来实现。

公开(公告)号：US20150179388A1

公开(公告)日：2015-06-25

申请号：US14408085

申请日：2012-06-14

申请人： Oscar Hemberg ,  Tomi Tuohimaa ,  Per Takman

发明人： Oscar Hemberg ,  Tomi Tuohimaa ,  Per Takman

IPC分类号： H01J29/62 ,  G21K1/08 ,  G21K5/04 ,  H01J35/08 ,  H01J35/14

CPC分类号： H01J29/62 ,  G21K1/08 ,  G21K5/04 ,  H01J35/04 ,  H01J35/08 ,  H01J35/14 ,  H01J2235/082 ,  H01J2235/16

摘要： In an electron irradiation system, a gas-tight housing encloses a cathode region and an irradiation region, which communicate through at least an aperture. In the cathode region, there is arranged a high-voltage cathode for emitting an electron beam. In the irradiation region, there is an irradiation site arranged to accommodate a stationary or moving object to be irradiated. The migration of cathode-degrading debris is limited by means of an electric field designed to prevent positively charged particles from entering the cathode region via the aperture. The invention can be embodied with an axial electric field, which realizes an energy threshold, or a transversal field which deflects charged particles away from trajectories leading into the cathode region.

摘要翻译： 在电子照射系统中，气密壳体包围通过至少一个孔连通的阴极区域和照射区域。 在阴极区域中设置有用于发射电子束的高电压阴极。 在照射区域中，存在被配置为容纳待照射的静止或移动物体的照射部位。 阴极降解碎屑的迁移通过设计用于防止带正电荷的颗粒经由孔径进入阴极区域的电场而受到限制。 本发明可以用实现能量阈值的轴向电场或使带电粒子远离导入阴极区域的横向场来实现。