ionization front

ionization front

See Strömgren sphere.

ionization front

[‚ī·ə·nə′zā·shən ‚frənt]
(astronomy)
A transition region that separates interstellar gas in which a given atomic species (usually hydrogen) is mostly ionized from interstellar gas in which it is mostly neutral.
References in periodicals archive ?
The Sandia concept, called the Ionization Front Accelerator (IFA), does not suffer this disadvantage.
To accelerate the electron-beam front, the physicists provide an accelerated, moving ionization front in the cesium.