neutron poison การใช้

• The stable fission product 149 Sm is also a neutron poison.
• Many of these are neutron absorbers, called neutron poisons in this context.
• Control rods that are made of a neutron poison are used to absorb neutrons.
• Samarium-149 is the second most important neutron poison in nuclear reactor physics.
• Norman Hilberry suspected a neutron poison was responsible.
• During SCRAM the operators can inject solutions containing neutron poisons directly into the reactor coolant.
• For this reason many designs use highly enriched uranium but incorporate burnable neutron poison in the fuel rods.
• I can understand how the neutron poisons and neutron moderators slow down and speed up the fission process.
• Nuclides which have a large absorption cross section are neutron poisons if they are neither fissile nor undergo decay.
• Buildup of stable or long-lived neutron poisons is called "'reactor slagging " '.
• 151 Sm is a medium-lived fission product and acts as a neutron poison in the nuclear fuel cycle.
• The major problem was impurities in the uranium oxide, which could act as neutron poisons and prevent a nuclear chain reaction.
• If a neutron absorber, or neutron poison, is injected at any time during this period, the reactor will shut down.
• Xenon-135 in particular tremendously affects the operation of a nuclear reactor because it's the most powerful known neutron poison.
• In a nuclear reactor, such a chain reaction is slowed and controlled by a neutron poison, absorbing some of the free neutrons.
• Unfortunately, the calcium hydride contained unacceptable amounts of boron, a neutron poison, making the metal unsuitable for use in a reactor.
• To prevent a post-accident nuclear reaction, steps have been taken, such as adding neutron poisons to key parts of the basement.
• Excessive neutron poison loads in experiments in target positions are discouraged because of their adverse effects on both transplutonium isotope production rates and fuel cycle length.
• Overall, europium is overshadowed by caesium-137 and strontium-90 as a radiation hazard, and by samarium and others as a neutron poison.
• The common fission product Xenon-135 produced in the fission process acts as a neutron poison that absorbs neutrons and therefore tends to shut the reactor down.