Portal:Nuclear technology
The Nuclear Technology Portal
Introduction
- Nuclear technology is technology that involves the nuclear reactions of atomic nuclei. Among the notable nuclear technologies are nuclear reactors, nuclear medicine and nuclear weapons. It is also used, among other things, in smoke detectors and gun sights. (Full article...)
- Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced by nuclear fission of uranium and plutonium in nuclear power plants. Nuclear decay processes are used in niche applications such as radioisotope thermoelectric generators in some space probes such as Voyager 2. Generating electricity from fusion power remains the focus of international research. (Full article...)
- A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter. (Full article...)
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Construction of the K-25 facility was undertaken by J. A. Jones Construction. At the height of construction, over 25,000 workers were employed on the site. Gaseous diffusion was but one of three enrichment technologies used by the Manhattan Project. Slightly enriched product from the S-50 thermal diffusion plant was fed into the K-25 gaseous diffusion plant. Its product in turn was fed into the Y-12 electromagnetic plant. The enriched uranium was used in the Little Boy atomic bomb used in the atomic bombing of Hiroshima. In 1946, the K-25 gaseous diffusion plant became capable of producing highly enriched product.
After the war, four more gaseous diffusion plants named K-27, K-29, K-31 and K-33 were added to the site. The K-25 site was renamed the Oak Ridge Gaseous Diffusion Plant in 1955. Production of enriched uranium ended in 1964, and gaseous diffusion finally ceased on the site on 27 August 1985. The Oak Ridge Gaseous Diffusion Plant was renamed the Oak Ridge K-25 Site in 1989, and the East Tennessee Technology Park in 1996. Demolition of all five gaseous diffusion plants was completed in February 2017. (Full article...)
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Did you know?
- ... that after journalist Adele Ferguson's criticism of the U.S. Navy's sex discrimination attracted nationwide attention, she was offered a personal tour of a nuclear submarine?
- ... that Helen Steven shared the Gandhi International Peace Award for her opposition to the nuclear submarine base in Scotland?
- ... that before becoming a successful children's author, Myron Levoy was an engineer doing research on nuclear-powered spaceships for a mission to Mars?
- ... that Project Carryall proposed the detonation of 23 nuclear devices in California to build a road?
- ... that Project Ketch proposed the detonation of a 24-kiloton nuclear device in Pennsylvania to create a natural-gas storage reservoir?
- ... that T. K. Jones thought that a nuclear war was survivable if "there are enough shovels to go around"?
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Selected biography -
Born in Austria-Hungary in 1908, Teller emigrated to the United States in the 1930s, one of the many so-called "Martians", a group of prominent Hungarian scientist émigrés. He made numerous contributions to nuclear and molecular physics, spectroscopy (in particular the Jahn–Teller and Renner–Teller effects), and surface physics. His extension of Enrico Fermi's theory of beta decay, in the form of Gamow–Teller transitions, provided an important stepping stone in its application, while the Jahn–Teller effect and the Brunauer–Emmett–Teller (BET) theory have retained their original formulation and are still mainstays in physics and chemistry.
Teller made contributions to Thomas–Fermi theory, the precursor of density functional theory, a standard modern tool in the quantum mechanical treatment of complex molecules. In 1953, with Nicholas Metropolis, Arianna Rosenbluth, Marshall Rosenbluth, and Augusta Teller, Teller co-authored a paper that is a standard starting point for the applications of the Monte Carlo method to statistical mechanics and the Markov chain Monte Carlo literature in Bayesian statistics. Teller was an early member of the Manhattan Project, which developed the first atomic bomb. He made a serious push to develop the first fusion-based weapons, but ultimately fusion bombs only appeared after World War II. He co-founded the Lawrence Livermore National Laboratory and was its director or associate director. After his controversial negative testimony in the Oppenheimer security clearance hearing of his former Los Alamos Laboratory superior, J. Robert Oppenheimer, the scientific community ostracized Teller.
Teller continued to find support from the U.S. government and military research establishment, particularly for his advocacy for nuclear energy development, a strong nuclear arsenal, and a vigorous nuclear testing program. In his later years, he advocated controversial technological solutions to military and civilian problems, including a plan to excavate an artificial harbor in Alaska using a thermonuclear explosive in what was called Project Chariot, and Ronald Reagan's Strategic Defense Initiative. Teller was a recipient of the Enrico Fermi Award and the Albert Einstein Award. He died on September 9, 2003, in Stanford, California, at 95. (Full article...)
Nuclear technology news
- 14 May 2024 –
- Russia places its nuclear capable submarine-launched Bulava intercontinental ballistic missile into service. (Reuters)
- 9 May 2024 – Joint Comprehensive Plan of Action, Iran–Israel relations
- Iran warns that it will build a nuclear weapon if Israel continues to target its nuclear facilities. (Al Jazeera)
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