Web1. nov 2008 · Penning真空计测量性能稳定,可测量高真空领域的电流。 因为是冷阴极方式,不必担心电极的烧损问题。 缺点是放电稳定性有一定不足。 另外从阴极放出的电子量受表面污染影响严重。 根据以上特点,此真空计适合不想频繁更换真空计的高真空领域设备上,同时因为此真空计本身有较强的磁场,要考虑其安装在设备上的位置。 让真空中的残留气体电离,通 … WebPENNINGVAC PTR 225 series PENNINGVAC PTR 90 series PENNINGVAC PR 25 PENNINGVAC PTR 225 series Pure cold cathode gauges Our pure cold cathode gauges use the Penning principle of cold cathode ionisation. Their measuring range of 10 -2 to 10 -9 enables you to measure into the high vacuum region.
Penning真空计_真空技术网
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Webwith standard hardware and operating conditions. Integration time is short (100us) in both pulse and analog mode. Cooling airflow Provides effective cooling of all components, even in the world’s smallest benchtop ICP-MS cabinet. All … WebThe penning CP25-3 gauge head contains a radioactive isotope in the form of a nickel-63 beta source overplated with inactive nickel. The nominal activity is 37 kBq which is not hazardous to the operator. CP25-3 Pen ning Gauge Heads 1. The CP25-3 gauge heads are designed for operation with the Edwards 1000 series Web16. sep 2024 · INTRODUCTION Penning ion sources (PISs) have been effectively used for many years to solve a wide range of problems in nuclear physics, geophysics, microelectronics, medicine, and instrument making. Ion sources that have been developed and used in various technological equipment operate in continuous and pulsed-periodic … the albigen papers pdf