extrapolated boundary
extrapolated boundary
[ik¦strap·ə‚lād·əd ′bau̇n·drē] (nucleonics)
A hypothetical surface outside a medium sustaining a neutron chain reaction on which the neutron flux would be 0 if it could be extrapolated from the flux a few mean free paths inside the medium.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.