Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of a series of chemically similar, radioactive elements with atomic numbers ranging from 89 (actinium) through 103 (lawrencium).
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun inorganic chemistry Any of the 14
radioactive elements of theperiodic table that arepositioned under thelanthanides to which they have similarchemistry .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun any of a series of radioactive elements with atomic numbers 89 through 103
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
Help support Wordnik (and make this page ad-free) by adopting the word actinide.
Examples
-
They do, however, create actinide-free waste that is much less radioactive, with a half-life of a couple of hundred years (as opposed to tens of thousands of years for LWR waste).
-
In other words, the fissile material produced by these reactors is recycled at least twice until the final waste results in an actinide-free byproduct that has a half life of about 200 years.
-
Depending upon which chemist you ask, rare earth elements consist of either: the so-called lanthanide series (elements having atomic numbers from 57 [corresponding to lanthanum] to 71 [corresponding to lutetium]) or the actinide (elements 89 to 103) and lanthanide series.
A Cloud in Every Silver Lining: The New Obstacle to a Green-Tech Revolution 2010
-
Depending upon which chemist you ask, rare earth elements consist of either: the so-called lanthanide series (elements having atomic numbers from 57 [corresponding to lanthanum] to 71 [corresponding to lutetium]) or the actinide (elements 89 to 103) and lanthanide series.
Bill Chameides: A Cloud in Every Silver Lining: The New Obstacle to a Green-Tech Revolution 2010
-
This can become plutonium-239 (239Pu) and by successive neutron capture 240Pu, 241Pu and 242Pu as well as other transuranic or actinide isotopes.
-
The actinide mix is then burned in on-site fast reactors.
-
Considering the closed fuel cycle, Generation I-III reactors recycle plutonium (and possibly uranium), while Generation IV designs are expected to have full actinide recycling capability.
-
Fuel used is of depleted uranium metal or nitride, with full actinide recycled from regional or central reprocessing plants.
-
In this, up to ten percent of the neutrons could come from the spallation, though it would normally be less, even where actinide incineration is the main objective.
-
Here, the blanket assembly is actinide fuel and/or spent nuclear fuel.
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.