Lamb-shift source

Lamb-shift source

[′lam ‚shift ‚sȯrs]
(nucleonics)
A device for producing a beam of polarized ions from one-electron atoms in their 2 s excited state; the 2 s and 2 p levels, initially separated by the Lamb shift, are mixed by magnetic and electric fields, and selected nuclear magnetic substrates are then depopulated, leaving the remaining atoms in a state with large nuclear polarization.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.