Charging of metal microparticles in electron flow


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We have studied the charging of copper microparticles in electron flow. It is established that the parameters of secondary electron emission from microparticles can significantly differ from those for metal films and volume targets. Conditions are determined under which negative charging of micron-sized copper particles in electron flow takes place. In the case of spherical microparticles, secondary emission is significantly increased as a result of the oblique incidence of primary electrons. A general approach is proposed that can be used to estimate the electron energy necessary for charging microparticles to high negative potentials.

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M. Gorokhov

Ioffe Physical Technical Institute

编辑信件的主要联系方式.
Email: mgorokhov@mail.ru
俄罗斯联邦, St. Petersburg, 194021

V. Kozhevin

Ioffe Physical Technical Institute

Email: mgorokhov@mail.ru
俄罗斯联邦, St. Petersburg, 194021

D. Yavsin

Ioffe Physical Technical Institute

Email: mgorokhov@mail.ru
俄罗斯联邦, St. Petersburg, 194021

S. Gurevich

Ioffe Physical Technical Institute

Email: mgorokhov@mail.ru
俄罗斯联邦, St. Petersburg, 194021

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