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2009年2月1日 · Thus medium and high current implanters, VIISta 810HP and VIIStaHC, respectively, are fitted with a plasma flood gun (PFG) – an electron source with self-regulating flow of low energy electrons. Different PFG current settings have been applied to investigate the charging mechanism due to ion implantation [3].

2009年2月1日 · Anti-charging system such as plasma flood gun (PFG) are currently running on high current and medium current implanters to reduce potential charging damage on device structures. However, in a conventional production line, high energy implantation steps are still often used without any charge compensation technique.

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A new plasma flood gun (PFG) apparatus using a toroidal RF discharge has been developed producing very low energy electrons at high emission for wafer charge neutralization. The performance of the Toroidal PFG (TPFG) will be characterized and discussed under the typical implantation conditions in VIISta ion implanters.

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2020年10月17日 · This script is designed to produce one (or several) raster map related to plant functional group results (richness, relative cover, light or soil CWM) for one (or several) specific FATE simulation year.

This script is designed to produce one (or several) raster map related to plant functional group results (richness, relative cover, light or soil CWM) for one (or several) specific FATE simulation year.

美国信安金融集团（pfg，nyse）是国际主要的金融财务集团之一，成立于1879年，有126年金融服务历史，通过其遍布不同范畴的金融服务公司，为商业、个人和机构客户提供多元化的金融产品及服务，当中包括退休金及投资服务、人寿及医疗保险。

PFG 成立于 1926 年，原名为 Bildmessung und Luftbildwesen，是全球历史最悠久的摄影测量期刊。 它是德国摄影测量、遥感和地理信息学会 (DGPF) 的官方期刊。 《Pfg-journal Of Photogrammetry Remote Sensing And Geoinformation Science》(Pfg-摄影测量遥感与地理信息科学杂志)编辑部通讯方式 ...