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公开(公告)号:CN100426440C
公开(公告)日:2008-10-15
申请号:CN200410027020.4
申请日:2004-04-21
Applicant: 清华大学 , 鸿富锦精密工业(深圳)有限公司
CPC classification number: G01L21/34
Abstract: 一种用于超高真空和极高真空量测的冷阴极电子枪,其包括一栅极和一设置于该栅极下方的阴极,其特征在于在该栅极上方平行设置一屏蔽极。本发明还提供一种使用上述冷阴极电子枪的真空规管,其包括一外壳、一收集极、一阳极和一冷阴极电子枪;该冷阴极电子枪和该收集极相对该阳极同轴对称放置;该外壳开口一端与待测器件相接,其特征在于该冷阴极电子枪包括一栅极、一平行设置于该栅极上方的屏蔽极和一设置于该栅极下方的阴极。本发明采用冷阴极电子枪的真空规管具有阴极体积小、功耗小、灵敏度高和降低吸放气率的优点。
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公开(公告)号:CN101133308A
公开(公告)日:2008-02-27
申请号:CN200680007086.4
申请日:2006-03-01
Applicant: 英飞康有限责任公司
IPC: G01L21/30 , G01L21/32 , G01L21/34 , H01J1/30 , H01J1/304 , H01J41/00 , H01J41/02 , H01J41/04 , H01J41/06 , H01J41/08 , H01J41/10 , H01J19/00 , H01J19/02 , H01J19/04 , H01J19/10
CPC classification number: G01L21/32 , G01L21/12 , H01J1/3042 , H01J41/04
Abstract: 本发明提出一种发射电子的阴极(6),它由装接到由不锈钢制成的侧壁(2)上的导电的发射层(7)和门(9),将该门以很小的距离固定在发射层(7)的凹入的发射表面的内部。阴极(6)围绕着一个反应区域(3),该反应区域包含一个圆柱形的筛网状的阳极(5)和一个位于中心的离子收集器(4),该离子收集器包括一直的轴向细丝。电流计(11)测量反映在反应区域(3)中气体密度的离子收集器电流(IIC),同时将门电压(VG)保持在发射层(7)的地电压与较高的阳极电压(VA)之间,并且调节门电压,其方式使得将阳极电流(IA)保持不变。发射层(7)可包括碳纳米管,金刚石状的碳,一种金属或一种金属混合物,或者一种半导体材料,半导体材料例如是可以比如用碳化物或钼涂布的硅。然而,发射表面也可是例如被化学刻蚀过程变粗糙的侧壁的内表面的一部分。门(9)可以是一种筛网,或者,它可以包括覆盖分布在发射区上的隔离器的金属薄膜小片或覆盖设置在发射表面上的电子可穿透层的一层金属薄膜。
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公开(公告)号:JP4252064B2
公开(公告)日:2009-04-08
申请号:JP2005518088
申请日:2002-05-28
Applicant: インフィコン インコーポレイティッド
Inventor: シー フリーズ ルイス , イー エレフソン ロバート
CPC classification number: H01J41/04
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公开(公告)号:JP2006510036A
公开(公告)日:2006-03-23
申请号:JP2005518088
申请日:2002-05-28
Applicant: インフィコン インコーポレイティッド
Inventor: シー フリーズ ルイス , イー エレフソン ロバート
CPC classification number: H01J41/04
Abstract: 電離真空計において、平行化された電子ビームが計器構造のグリッド表面に当たるときに出射されるX線の影響を、羽板付ビーム止めにより低減した。 この羽板付ビーム止めはX線を持たない影領域を形成し、これによりコレクタプレートに当たるX線の量を最小にし、残留電流のX線作用部分を減少させる。
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公开(公告)号:JPS5550200A
公开(公告)日:1980-04-11
申请号:JP12328878
申请日:1978-10-06
Applicant: TOKYO SHIBAURA ELECTRIC CO
Inventor: SUKENOBE SATORU
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公开(公告)号:JP2001050845A
公开(公告)日:2001-02-23
申请号:JP22483699
申请日:1999-08-09
Applicant: SHIMADZU CORP
Inventor: OSANAI KATSUTOYO
Abstract: PROBLEM TO BE SOLVED: To obtain a power supply for an ionization in which the capacity, heat generation and size are reduced by realizing output characteristics corresponding to the voltage-current characteristics of an ionization load where the load current is low under high voltage and high under low voltage. SOLUTION: The power supply for ionization comprises a high voltage DC/DC converter 2 applying a DC voltage to an ionization electrode and a voltage control section 4 controls the primary voltage of the high voltage DC/DC converter 2 based on a load current generated through ionization to vary the secondary voltage of the high voltage DC/DC converter 2 reversely to the varying direction of the load current I. In place of output voltage control using voltage drop across a resistor, output voltage control depending on the load current I is carried out and the capacity, heat generation and size of the power supply are reduced by realizing output characteristics corresponding to the voltage- current characteristics of an ionization load.
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公开(公告)号:JPS51113772A
公开(公告)日:1976-10-07
申请号:JP3782275
申请日:1975-03-31
Applicant: TOKYO SHIBAURA ELECTRIC CO
Inventor: KAGEYAMA KATSUKOU
Abstract: PURPOSE:In order to reduce the delay due to the change in discharging time, by way of preventing the change of quality and consumption of the cathode (or trigger electrode) which emits the elctrron.
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公开(公告)号:US12230486B2
公开(公告)日:2025-02-18
申请号:US16907076
申请日:2020-06-19
Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
Inventor: Shane Ardo , Gideon Segev , Francesca Toma , Joel Ager , Rylan Kautz , David Larson
IPC: H01J41/00 , B01D61/46 , C02F1/469 , H01J41/12 , C02F103/08
Abstract: Described herein is an ion pump system implementing an electronic ratchet mechanism produced by modulating a spatially varying electric potential distribution that can result in a net ionic current and voltage. The ion pumping membrane system includes an ion-permeable layer integrated with ion-selective membranes. The electric potential distribution within the ion-permeable layer is modulated through external stimuli. When immersed in solution, ions within the ion-permeable layer experience a time varying, spatially asymmetric electric field distribution resulting in ratchet-driven direction pumping, which can be used in applications such as desalination.
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