Eyeballing ITER compared to
a fission reactor core, it's obvious that an ITER - like machine is many times more massive.
Comparing the ITER and the core of a comparable commercial fission reactor shows an enormous difference in size — a factor of 5 - 10 — ITER being huge by comparison to
a fission reactor core.
Not exact matches
He believes that uranium may have settled into the
core — enough to sustain nuclear
fission — and that the resulting
reactor is the energy source for the geomagnetic field.
This is the case because even when
fission is stopped by driving neutron - absorbing control rods into a
reactor core, radioactivity still warms the fuel rods.
Fission of uranium and plutonium is not the only reaction that takes place in the
core of a fast - breeder
reactor.
So the
reactor core continues to produce heat in the absence of
fissioning.
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.
Enriched uranium oxide is formed into rods and water is used both as a coolant, flowing through the
reactor core to transfer heat away, and as a moderator, slowing down neutrons released by
fission so that they promote further nuclear reactions.
The water around the
reactor core serves as three things: a neutron moderator, meaning it slows down the fast neutrons released during
fission, which then sustain the chain reaction; a cooling agent; and a radiation shield.
Control rods will drop down into the
reactor core if necessary to stop the nuclear
fission chain reaction directly (see also Question 6).
Natural nuclear
fission reactors may provide reasonable explanations for other «NASA mysteries» including: (1) Our Moon having a soft or molten
core; (2) Tiny planet Mercury having a magnetic field; (3) Mars displaying evidence of an ancient magnetic field; (4) Our Moon displaying evidence of an ancient magnetic field; (5) Jupiter's moon Ganymede having an internally generated magnetic field; (6) Jupiter's moon Io being extremely volcanic; (7) Saturn's moon Enceladus showing evidence of internal heating; and, (8) Evidence of internal heat generation in Pluto's moon Charon:
The irradiation rig is intended to accumulate
fission molybdenum - 99 in the RBT - type
reactor core.
These methods have rather strong dependence on theoretical models of the complex
fission processes in the
reactor core.