slow neutron การใช้

• Experiments with bombardment of elements by slow neutrons had always produced heavier fission ".
• For instance, when a uranium atom is bombarded with slow neutrons, fission takes place.
• The s-process is a slow neutron capture of lighter elements inside pulsating red giant stars.
• This reaction produces T, Helium-3, and another slow neutron.
• This would lead shortly to his famous work with activation of nuclei with slow neutrons.
• Upon irradiation with slow neutrons in a nuclear reactor, several radionuclides of xenon are produced.
• The cross section for interaction with nuclei is much larger for slow neutrons than for fast neutrons.
• All uranium is radioactive, but nuclear fission occurs with slow neutrons in the relatively rare isotope uranium-235.
• All uranium is radioactive, but nuclear fisson occurs with slow neutrons in the relatively rare isotope uranium-235.
• The detection of slow neutrons returning to the probe allows an estimate of the amount of hydrogen present.
• A map of slow neutrons shows there is a broad deposit of water around the Martian south pole.
• This is because U-234 is not fissile, and tends to absorb slow neutrons in a nuclear reactor-becoming U-235.
• In a GFR reactor design, the unit operates on fast neutrons, no moderator is needed to slow neutrons down.
• For example, hydrogen-rich materials are often used to shield against neutrons, since ordinary hydrogen both scatters and slows neutrons.
• Gas, oil, water and sand all have different concentrations of hydrogen atoms which reflect different amounts of slow neutrons.
• This is because U-234 is not fissile, and tends to absorb slow neutrons in a nuclear reactor becoming U-235.
• In Ottawa, the delegation also met a Canadian, George Laurence, who had secretly built his own slow neutron experiment.
• Control rods used to be tipped with graphite, a material that slows neutrons and thus speeds up the chain reaction.
• Thus, when Mars Odyssey passes over a region containing hydrogen, it sees more slow neutrons and fewer of the faster ones.
• Therefore, if the primary coolant is removed, there are not enough slow neutrons to sustain the reaction and the core cools.