亚洲a级网站_国产女极品在线观看AV_9色视频在线观看_欧美一区日本一区韩国一区_三级高清自拍少妇_国一区二区

About NEC(National Electrostatics Corp.)

美國NEC公司介紹

---The world leader in Megavolt accelerator technology兆伏加速器技術的世界***

National Electrostatics Corporation (NEC) is the world's leader in the manufacture of electrostatic ion beam accelerator systems. A private， employee-owned company， NEC was incorporated in Middleton， Wisconsin in 1965 and now has over 90 employees including electrical and mechanical engineers， ion beam system technicians， craftsmen， and other skilled workers. Five of our employees hold doctorates in fields related to ion beam research and design.

NEC是世界上**的制造靜電離子束加速器系統公司，公司于1965年成立于美國米德爾頓，威斯康辛州。目前擁有90名員工，其中包括電氣工程師和機械工程師，離子束系統技術，工藝和其他技術工人，我們有五位員工持有離子束研究和設計相關領域的博士學位。

NEC employees pride themselves on making a wide variety of Pelletron ® accelerator systems to meet customers' needs. To date we have manufactured about 175 Pelletron systems with sales in 44 countriesthroughout the world. These systems produce ion beams of essentially all stable nuclei with energies ranging from a few keV to hundreds of MeV. The Pelletron is still the world's only commercially available accelerator which incorporates an all metal and ceramic acceleration tube with no organic material in the vacuum volume.

為了滿足客戶的需求，我們在做各種多種的Pelletron®加速器系統，這些都讓NEC的員工引以自豪。迄今為止，在全球44個國家，我們已經制造并銷售了 175套Pelletron的系統。這些系統到目前為止都能穩定的產生幾keV到幾百MeV不等的離子束。NEC公司的Pelletron 仍然是目前世界上**在市銷售的包含一個全金屬和陶瓷加速管沒有有機材料在真空卷的商用加速器。

Pelletron systems range in size and configuration from the highly versatile 25 million volt tandem Pelletron at the Oak Ridge National Laboratory (the world's highest voltage accelerator)， to dedicated analytical instruments using MeV ion beam technology. MeV ion beam instruments are available for standard RBS analysis， channeling RBS， PIXE， micro PIXE and micro RBS， very high-sensitivity accelerator mass spectrometry (AMS) and a wide variety of other materials analysis techniques.

NEC公司的高靈敏度和寬配置范圍的25萬伏串連式靜電加速器系統目前應用于橡樹嶺國家實驗室（世界**電壓加速器），采用高能離子束技術，專業分析MeV的離子束的RBS分析，竄RBS，PIXE，微PIXE和微RBS，NEC在這些測試方面擁有非常高的靈敏度加速器質譜（AMS）和各種各樣的其它材料的分析技術。

The Pelletron gets its name from the metal pellet charging chainswhich are highly efficient， provide long life， need little maintenance and provide extremely stable terminal voltage conditions.

Pelletron使用壽命長，需要很少的維護，并提供極其穩定的終端電壓條件。Pelletron由金屬顆粒充電鏈的高效而因此得名。

NEC specializes in custom-made， one-of-a-kind ion beam systems.

NEC專業定制的、****的離子束系統。

初期應用于考古學的C₁₄ 記年的加速質譜儀，如今被用于測量例如鈹，鋁，氯，鈣等眾多元素的同位素比值。它被應用于地質物理學，海洋學，

環境和古氣候探究，生物醫學，生化動力學，材料研究，監控，原子核，原子物理學和微量元素的分析等諸多領域。