Challenges in Plutonium Science [Vol 1 and 2]

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In all these areas, close cooperation between the United States and Russia and a stronger IAEA presence are essential. The proliferation danger posed by the dissolution of the former Soviet Union can be resolved in the near term only by close cooperation between Russia and the United States. It is time to tackle the immediate threats—namely, loss of nuclear weapons, The CdZnTe (or “cad-zinc-tel” for short) materials, or knowledge—with a greater sense of urgency. Fighting nuclear terrorism detector developed at Los Alamos has and nuclear emergencies is also best accomplished jointly by the United States and opened the way for a new generation Russia.

The price tag may seem and Neutron Detector Physics Vol. 3768, large, but it is truly insignificant compared with the amounts to be spent if a nuclear p. 339. Bellingham, WA: SPIE. ) catastrophe were to occur. ■ (Left): Video portal monitors guard the departure area at Sheremetyevo Airport in Moscow to help prevent nuclear smuggling. (Right): An official with the United Nations Special Commission uses a hand-held radiation detector at an inspection site in Iraq. The detector was originally developed at Los Alamos.

When a plutonium nucleus undergoes α-decay, the recoiling uranium and helium nuclei knock plutonium atoms from their lattice sites. Displaced plutonium atoms come to rest at interstitial sites and leave lattice vacancies behind. Each displaced plutonium atom creates a Frenkel pair—consisting of a vacancy and a self-interstitial. Each decay event creates more than 2000 Frenkel pairs. The cascade size is the space occupied by the Frenkel pairs created during a certain decay event. Acknowledgments Many of the exciting ideas summarized here originate with the authors of the following articles: “Plutonium Condensed-Matter Physics” by A.

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