unpolarized particle beam

unpolarized particle beam

[¦ən′pō·lə‚rīzd ′pard·ə·kəl ‚bēm]
(physics)
A beam of particles with spin in which the directions of the spins are random.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.