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Efficient Charge Neutralization with an Ac Corona Ionizer by A. Ohsawa is a Engineering article available to read on EtoBox.

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This paper discusses the problem of obtaining effective charge neutralization by an ac corona ionizer with airflow. The motion of ions and the neutralization of a charged object for different discharge frequencies and airflow velocities are investigated by a computer fluid model for positive and negative ions. The results of the investigation show that, in the region of ion transport, the quasi-neutralized charge distribution self-generated by positive and negative ions during charge neutralization can effectively transport the ions themselves from an ionizer to a charged object and significantly reduce both the unwanted fluctuation and dc offset in the potential of the object at a steady state, resulting in efficient and precise charge neutralization. Since the quasi-neutralization greatly depends on the relationship between the discharge frequency and airflow velocity, the control of the relationship may lead to better neutralization with an air-blowing ac ionizer.

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Author

A. Ohsawa

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3886)

Published

2007

Language

EN

Field

Engineering (Physical Sciences)