Sentences with phrase «with slow neutrons»

In these cases, the neutrons are moderated to lower their speed in the reaction as the chances of fission are greater with slow neutrons than with fast neutrons.

Not exact matches

He focuses his attention upon the correlation that is established between the «spins» of two «slow» neutrons when they scatter off each other (collide with or brush past one another).

Composite photo of the slowest - spinning neutron star discovered so far (9 - 2016): background stars photographed in optical wavelengths; colorful cloud is the supernova remnant RCW 103, photographed in X-ray wavelengths, with the white neutron star at its center.

«Observations with multiple space telescopes have revealed that, while other neutron stars spin multiple times a minute, this object rotates only once about every 6.5 hours — making it by far the slowest - spinning star in its class discovered to date,» said David Burrows, professor of astronomy and astrophysics at Penn State.

When fast neutrons released by the splitting of atoms (that is, nuclear fission) pass through heavy water, interactions with the heavy water molecules cause those neutrons to slow down, or moderate.

And the Americans chose to slow the neutrons emitted from their enriched uranium with more readily available graphite, rather than heavy water.

Boynton and his team used the Odyssey instrument to zero in on energetic gamma rays, which are emitted by hydrogen when it is stimulated by subatomic collisions, and on sluggish neutrons that had been slowed down by their interaction with hydrogen.

Lithium - 6 has an enormous cross-section to capture slow neutrons, fissioning to tritium with a large energy yield.

«It became clear to Fermi almost immediately that in order to do this with natural uranium you had to slow down the neutrons,» Bethe said.

In addition to its unique fuel cycle, the TerraPower design employs a high - temperature, liquid metal core cooling technology suited to a breeder reactor with «fast» neutron activity, rather than today's predominant reactors whose water cooling systems slow neutrons.

The company's CEO, John Gilleland, originally likened his reactor to a smoldering cigarette or cigar, with a slow - moving fission phase moving wave - like through the fuel core, generating neutrons to maintain a gradually advancing chain reaction while it consumes most of the fuel.

It produces an intense beam of slow - moving neutrons whose photon emissions can be detected with the same setup used for earlier precision measurements of the neutron's lifetime.

The resulting spongelike openings were then filled with SCW.During the flood, that pore water provided an enormous surface area for slowing and capturing neutrons and other subatomic particles.

It has long been known that the outer layer of Gacrux is contaminated with barium and other elements which are formed by the slow capture of neutrons.

Oddly enough, both Davis and his Jimmy Neutron: Boy Genius collaborator Steve Oedekerk have exemplified why studios need to slow down the CG / 3 - D animation output with their individual efforts, Oedekerk's being the even less impressive Barnyard.

Fuel — Uranium 235 Natural uranium contains only 0.7 % of U-235 Must be enriched typically to about 3 % for commercial power Uranium 235 will only absorb thermal (slow) neutrons requiring a moderator to slow the neutrons down by colliding with them.

27 Nuclear Reactor Induced Fission Nuclear Reactor Induced Fission Moderator — material surrounding the fuel rods that slows down the neutrons by colliding with it.

Uranium 235 will only absorb thermal (slow) neutrons requiring a moderator to slow the neutrons down by colliding with them.