plasma induction zone

https://doi.org/10.1351/goldbook.08521
Inductively-coupled plasma volume where there is a maximum interaction between the electromagnetic field and the plasma gas (mostly argon). This is the plasma’s hottest area and has a toroidal configuration.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 728 [Terms] [Paper]