WebNeutron activation is the only common way that a stable material can be induced into becoming intrinsically radioactive. Neutrons are only free in quantity in the microseconds of a nuclear weapon's explosion, in an active nuclear reactor, or in a spallation neutron source. Web2 days ago · Lead is quite ineffective for blocking neutron radiation, as neutrons are uncharged and can simply pass through dense materials. Materials composed of low atomic number elements are preferable for stopping this type of radiation because they have a higher probability of forming cross-sections that will interact with the neutrons.

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WebNov 28, 2009 · Answer. Chris - Well, the reason that lead is a good choice is because it's a very dense substance, because dense substances can … WebThese atoms can become radioactive. Neutrons are more effective at damaging cells of the body than are other forms of ionizing radiation, such as x-rays or gamma rays. The best way to protect against neutron … command\u0027s fo

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WebNov 25, 2024 · Yes it can but in low amounts due to the cross sections involved. The process is known as photodisintegration. For heavy elements, like lead or iron, the … WebDec 30, 2015 · You might benefit from studying the first diagram here while noting that most of the nuclides above and to the right of the intersection Z = 82, N ≈ 126 decay towards lead, but lighter unstable isotopes generally … WebA) plutonium-239. 21) Radium-226 is a common isotope on Earth, but has a half-life of about 1600 years. Given that Earth is some 5 billions years old, why is there any radium at all? B) Radium-226 is a ʺdaughterʺ isotope and the result of the radioactive decay of uranium. dry orchid roots