concentric nebulizer

https://doi.org/10.1351/goldbook.12365
Pneumatic nebulizer in which the liquid flows through a central capillary and dispersion gas flows through a surrounding outer tube.
Source:
PAC, 2013, 85, 1515. (Definitions of terms relating to mass spectrometry (IUPAC Recommendations 2013)) on page 1532 [Terms] [Paper]