quadrupole

Definitions:

  • a <xref>distribution</xref> of either <xref>electric charge</xref> or <xref>magnetization</xref> equivalent to two <xref>dipoles</xref> that point in opposite directions
  • a <xref>magnet</xref> with two <xref>north poles</xref> and two <xref>south poles</xref>, used to <xref>focus</xref> a <xref>beam</xref> of <xref>particles</xref>
powered by