Читать книгу The ESD Control Program Handbook - Jeremy M. Smallwood - Страница 19

Ions are very small particles having a small electrostatic charge. They are naturally present in the air but may also be generated deliberately or accidentally around objects at high voltage.

Charges are naturally present in atoms. Protons in the atomic nucleus have positive charge, and electrons in the atom have negative charge. A negative ion is formed when a particle gains one or more electrons. A positive ion is formed when a particle loses one or more electrons. Ions may consist of free electrons, single atoms, many atoms, or molecules (Wikipedia 2018). Sometimes these ions may become attached to larger particles.