What is the half-life for plutonium 240?
What is the half-life for plutonium 240?
6552.2 mean
The half life of plutonium-240☆ These results were combined with 240Pu data obtained from other laboratories, and the half life of 240Pu was calculated to be 6552.2 mean tropical years.
What is the half-life of Pu 241?
13.8 years to 15.1 years
The half-life of Fu-241 is an important nuclear constant for plutonium fuel design, exposure evaluation at the nuclear fuel production line, con- trol of a nuclear reactor, and others. So far, much data for Pu-241 half-life have been reported, but these values range from 13.8 years to 15.1 years.
What is the half-life of plutonium 238?
87.7 years
Pu-238 has a half-life of 87.7 years, making it a much longer-lasting source of energy than polonium-210, which was used in the 1959 RTG prototype and has a half-life of 138 days.
What is the half-life of plutonium 242?
375,000 years
Plutonium-242 (242Pu) is one of the isotopes of plutonium, the second longest-lived, with a half-life of 375,000 years….Plutonium-242.
| General | |
|---|---|
| Protons | 94 |
| Neutrons | 148 |
| Nuclide data | |
| Half-life | 375,000 years |
Is plutonium-240 stable?
Like all artificial elements, it has no stable isotopes. It was synthesized long before being found in nature, the first isotope synthesized being 238Pu in 1940.
Is plutonium-240 fertile?
Since plutonium-238, plutonium-240 and plutonium-242 are fertile, accumulation of these and other nonfissile isotopes is less of a problem than in thermal reactors, which cannot burn them efficiently.
What is the half-life of uranium 235?
about 700 million years
The half-life of uranium-238 is about 4.5 billion years, uranium-235 about 700 million years, and uranium-234 about 25 thousand years.
Is plutonium 240 stable?
What’s the half-life of uranium?
about 4.5 billion years
Is uranium 238 fertile?
Unlike uranium-235, it is non-fissile, which means it cannot sustain a chain reaction in a thermal-neutron reactor. However, it is fissionable by fast neutrons, and is fertile, meaning it can be transmuted to fissile plutonium-239.
What is the half life of plutonium 240?
Plutonium-240, 240 Pu; General; Symbol: 240 Pu: Names: plutonium-240, Pu-240: Protons: 94: Neutrons: 146: Nuclide data; Natural abundance: 0 (Artificial) Half-life: 6561(7) years: Isotope mass: 240.0538135(20) u: Decay modes; Decay mode: Decay energy : Alpha decay: 5.25575(14) Isotopes of plutonium Complete table of nuclides
How does the isotope 240 Pu compare to 239 Pu?
The isotope 240 Pu has about the same thermal neutron capture cross section as 239 Pu (289.5 ± 1.4 vs 269.3 ± 2.9 barns), but only a tiny thermal neutron fission cross section (0.064 barns). When the isotope 240 Pu captures a neutron, it is about 4500 times more likely to be become plutonium-241 than to fission.
What does put 240 stand for?
Plutonium-240 (240. Pu. /Pu-240) is an isotope of the actinide metal plutonium formed when plutonium-239 captures a neutron.
