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Nuclear fission

A Wisdom Archive on Nuclear fission

Nuclear fission

A selection of articles related to Nuclear fission

We recommend this article: Nuclear fission
More material related to Nuclear Fission can be found here:
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related to
Nuclear Fission
Nuclear fission, Nuclear fission - History, Nuclear fission - Links, Nuclear fission - Physical overview, Nuclear fission - Fission bombs, Nuclear fission - Fission reactors, Isotope separation, Nuclear engineering, Nuclear fusion, Nuclear reaction, Nuclear reactor, Nuclear weapon

ARTICLES RELATED TO Nuclear fission

Nuclear fission: Encyclopedia II - Nuclear fission - Physical overview

Nuclear fission differs from other forms of radioactive decay in that it can be harnessed and controlled via a chain reaction: free neutrons released by each fission event can trigger yet more events, which in turn release more neutrons and cause more fissions. Chemical isotopes that can sustain a fission chain reaction are called nuclear fuels, and are said to be fissile. The most common nuclear fuels are 235U (the isotope of uranium with an atomic mass of 235) and 239Pu (the isotope of plutonium with an atomic mass of ...

See also:

Nuclear fission, Nuclear fission - Physical overview, Nuclear fission - Spontaneous and induced fission; chain reactions, Nuclear fission - Fission reactors, Nuclear fission - Fission bombs, Nuclear fission - History, Nuclear fission - Links

Read more here: » Nuclear fission: Encyclopedia II - Nuclear fission - Physical overview

Nuclear fission: Encyclopedia II - Nuclear fission - Physical overview

Nuclear fission differs from other forms of radioactive decay in that it can be harnessed and controlled via a chain reaction: free neutrons released by each fission event can trigger yet more events, which in turn release more neutrons and cause more fissions. Chemical isotopes that can sustain a fission chain reaction are called nuclear fuels, and are said to be fissile. The most common nuclear fuels are 235U (the isotope of uranium with an atomic mass of 235) and 239Pu (the isotope of plutonium with an atomic mass of ...

See also:

Nuclear fission, Nuclear fission - Physical overview, Nuclear fission - Spontaneous and induced fission; chain reactions, Nuclear fission - Fission reactors, Nuclear fission - Fission bombs, Nuclear fission - History

Read more here: » Nuclear fission: Encyclopedia II - Nuclear fission - Physical overview

Nuclear fission: New Age Spiritual Dictionary on Energy

energy

1.    Life force, cosmic ether, healing medium, vitalizing force, primal juice, cosmic electricity.

2.    mc2: mass times the square of the speed of light.

3.    Electromagnetic fields consisting of positive, negative, and neutral charges which build and sustain the human body and all other matter.

4.    Forces of nature harnessed for human use including: coal, petroleum, natural gas, nuclear fission, nuclear fusion, hydroelectric, geothermal, organic waste and refuse, wind, tides, ocean waves, ocean currents, temperature differential, solar terrestrial and extraterrestrial, gravity, electrostatic, hydrogen

 

(See also: Energy , Body Mind and Soul)

 

Nuclear fission: Encyclopedia - Nuclear fission

Nuclear fission (in nuclear physics, simply fission) is a process in which the nucleus of an atom splits into two or more smaller nuclei (fission products) and usually some by-product particles. Hence, fission is a form of elemental transmutation. The by-products include free neutrons, photons (usually gamma rays), and other nuclear fragments such as beta particles and alpha particles. Fission of heavy elements can release substantial amounts of useful energy both ...

Including:

Read more here: » Nuclear fission: Encyclopedia - Nuclear fission

Nuclear fission: Encyclopedia - Criticality accident

A criticality accident (also sometimes referred to as an "excursion" or "power excursion") occurs when a nuclear chain reaction is accidentally allowed to occur in fissile material, such as enriched uranium or plutonium. This releases neutron radiation which is highly dangerous to surrounding personnel and which causes induced radioactivity in the surroundings. When such incidents occur outside reactor cores and test facilities where fission is intended to occur, they pose a high risk both of injury or death to su ...

Including:

Read more here: » Criticality accident: Encyclopedia - Criticality accident

Nuclear fission: Encyclopedia - Nuclear weapon

A nuclear weapon is a weapon which derives its destructive force from the nuclear reactions of nuclear fission and/or fusion. As a result, even a nuclear weapon with a small yield is significantly more powerful than the largest conventional explosives, and a single weapon can be capable of destroying or seriously disabling an entire city. In the history of warfare, nuclear weapons have been used on two occasions, both during the closing days of World War II. The first event occurred on the morning of 6 August 1945, when the Uni ...

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Read more here: » Nuclear weapon: Encyclopedia - Nuclear weapon

Nuclear fission: Encyclopedia - Binding energy

Binding energy is the energy required to disassemble a whole into separate parts. A bound system has a lower potential energy than its constituent parts; this is what keeps the system together; it corresponds to a positive binding energy. At the nuclear level, binding energy is derived from the strong nuclear force and is the energy required to disassemble a nucleus into neutrons and protons. At the atomic level, binding energy is derived from electromagnetic interaction and is the energy required to disassemble an atom into el ...

Including:

Read more here: » Binding energy: Encyclopedia - Binding energy

Nuclear fission: Encyclopedia II - Nuclear weapon - Types of nuclear weapons

There are two basic types of nuclear weapons. The first are weapons which produce their explosive energy through nuclear fission reactions. These are known as colloquially as atomic bombs or A-bombs. In fission weapons, a mass of fissile material (enriched uranium or plutonium) is rapidly assembled into a critical mass, in which a chain reaction begins and grows exponentially, releasing tremendous amounts of energy. This is accomplished by rapidly creating supercriticality, either by shooting one piece of subcritical material i ...

See also:

Nuclear weapon, Nuclear weapon - Types of nuclear weapons, Nuclear weapon - Effects of a nuclear explosion, Nuclear weapon - Nuclear strategy, Nuclear weapon - Weapons delivery, Nuclear weapon - History, Nuclear weapon - Media

Read more here: » Nuclear weapon: Encyclopedia II - Nuclear weapon - Types of nuclear weapons

Nuclear fission: Encyclopedia II - Nuclear weapon - Types of nuclear weapons

The simplest nuclear weapons derive their energy from nuclear fission. A mass of fissile material is rapidly assembled into a critical mass, in which a chain reaction begins and grows exponentially, releasing tremendous amounts of energy. This is accomplished by rapidly creating supercriticality, either by shooting one piece of subcritical material into another, or compressing a subcritical mass. A major challenge in all nuclear weapon designs is ensuring that a significant fraction of the fuel is consumed before the weapon destroys itself. ...

See also:

Nuclear weapon, Nuclear weapon - Types of nuclear weapons, Nuclear weapon - Effects of a nuclear explosion, Nuclear weapon - Nuclear strategy, Nuclear weapon - Weapons delivery, Nuclear weapon - History, Nuclear weapon - Media

Read more here: » Nuclear weapon: Encyclopedia II - Nuclear weapon - Types of nuclear weapons

Nuclear fission: Encyclopedia II - Inertial confinement fusion - Basic fusion

Fusion reactions combine lightweight atoms, such as hydrogen, together to form larger ones. Generally the reactions take place at such high temperatures that the atoms have been ionized, their electrons stripped off by the heat; thus, fusion is typically described in terms of "nuclei" instead of "atoms". Fusion reactions on a scale useful for energy production require a very large amount of energy to initiate in order to overcome the so-called Coulomb barrier or fusion barrier energy. Since the positively-charged nuclei ...

See also:

Inertial confinement fusion, Inertial confinement fusion - Basic fusion, Inertial confinement fusion - ICF design, Inertial confinement fusion - Issues with the successful achievement of ICF, Inertial confinement fusion - Brief history, Inertial confinement fusion - Inertial Fusion Energy

Read more here: » Inertial confinement fusion: Encyclopedia II - Inertial confinement fusion - Basic fusion

Nuclear fission: Encyclopedia II - MOX fuel - Overview

In every nuclear reactor core there is both fission of isotopes such as uranium-235, and the formation of new, heavier isotopes due to neutron capture, primarily by U-238. Most of the fuel mass in a reactor is U-238. This can become plutonium-239 and by successive neutron capture Pu-240, Pu-241 and Pu-242 as well as other transuranic or actinide isotopes. Pu-239 is fissile, like U-235. (Small quantities of U-236 and Pu- ...

See also:

MOX fuel, MOX fuel - Overview, MOX fuel - Current applications, MOX fuel - Fabrication, MOX fuel - Reference

Read more here: » MOX fuel: Encyclopedia II - MOX fuel - Overview

Nuclear fission: Encyclopedia II - MOX fuel - Overview

In every nuclear reactor core there is both fission of isotopes such as uranium-235, and the formation of new, heavier isotopes due to neutron capture, primarily by U-238. Most of the fuel mass in a reactor is U-238. This can become plutonium-239 and by successive neutron capture Pu-240, Pu-241 and Pu-242 as well as other transuranic or actinide isotopes. Pu-239 is fissile, like U-235. (Very small quantities of Pu-236 and Pu- ...

See also:

MOX fuel, MOX fuel - Overview, MOX fuel - Current applications, MOX fuel - Fabrication, MOX fuel - Reference

Read more here: » MOX fuel: Encyclopedia II - MOX fuel - Overview

Nuclear fission: Encyclopedia II - Aqueous Homogeneous Reactor - History

Initial studies of homogeneous reactors took place toward the close of World War II. It pained chemists to see precisely fabricated solid-fuel elements of heterogeneous reactors eventually dissolved in acids to remove fission products—the "ashes" of a nuclear reaction. Chemical engineers hoped to design liquid-fuel reactors that would dispense with the costly destruction and processing of solid fuel elements. The formation of gas bubbles in liquid fuels and the corrosive attack on materials, howev ...

See also:

Aqueous Homogeneous Reactor, Aqueous Homogeneous Reactor - History, Aqueous Homogeneous Reactor - The ARGUS reactor, Aqueous Homogeneous Reactor - Other Research

Read more here: » Aqueous Homogeneous Reactor: Encyclopedia II - Aqueous Homogeneous Reactor - History

Nuclear fission: Encyclopedia II - Project Prometheus - Motivations

Due to their distance from the Sun, spacecraft exploring the outer planets are severely limited in that they cannot use solar power as a source of electrical energy for onboard instrumentation or for ion propulsion systems. Previous missions to the outer planets such as Voyager and Magellan probe have relied on radioisotope thermoelectric generators (RTG's) as their primary power source. Unlike RTG's which rely on heat produced by the natural decay of radioactive isotopes, Project Prometheus calls for the use of a ...

See also:

Project Prometheus, Project Prometheus - Namesake, Project Prometheus - Motivations, Project Prometheus - Missions, Project Prometheus - Technology, Project Prometheus - Collaboration

Read more here: » Project Prometheus: Encyclopedia II - Project Prometheus - Motivations

Nuclear fission: Encyclopedia II - Nuclear weapon - Types of nuclear weapons

There are two basic types of nuclear weapons. The first are weapons which produce their explosive energy through nuclear fission reactions alone. These are known as colloquially as atomic bombs or A-bombs. In fission weapons, a mass of fissile material (enriched uranium or plutonium) is rapidly assembled into a critical mass, in which a chain reaction begins and grows exponentially, releasing tremendous amounts of energy. This is accomplished by rapidly creating supercriticality, either by shooting one piece of subcritical mate ...

See also:

Nuclear weapon, Nuclear weapon - Types of nuclear weapons, Nuclear weapon - Effects of a nuclear explosion, Nuclear weapon - Nuclear strategy, Nuclear weapon - Weapons delivery, Nuclear weapon - History, Nuclear weapon - Media

Read more here: » Nuclear weapon: Encyclopedia II - Nuclear weapon - Types of nuclear weapons

Nuclear fission: Encyclopedia II - Nuclear Non-Proliferation Treaty - Treaty pillars

Nuclear Non-Proliferation Treaty - First pillar: non-proliferation. Five states are permitted by the NPT to own nuclear weapons: the United States (signed 1968), United Kingdom (1968), France (1992), Soviet Union (1968; obligations and rights assumed by Russia), and the People's Republic of China (1992). These were the only states possessing such weapons at that time, and are also the five permanent members of the United Nations Security Council. These 5 Nuclear Weapons States (NWS) agree not to transfer nuclear weapons technology to other states, and the ...

See also:

Nuclear Non-Proliferation Treaty, Nuclear Non-Proliferation Treaty - Treaty pillars, Nuclear Non-Proliferation Treaty - First pillar: non-proliferation, Nuclear Non-Proliferation Treaty - Second pillar: disarmament, Nuclear Non-Proliferation Treaty - Third pillar: the right to peacefully use nuclear technology, Nuclear Non-Proliferation Treaty - History, Nuclear Non-Proliferation Treaty - United States-NATO nuclear weapons sharing, Nuclear Non-Proliferation Treaty - India Pakistan Israel, Nuclear Non-Proliferation Treaty - North Korea, Nuclear Non-Proliferation Treaty - Iran, Nuclear Non-Proliferation Treaty - Leaving the Treaty, Nuclear Non-Proliferation Treaty - Future, Nuclear Non-Proliferation Treaty - Parties to the treaty

Read more here: » Nuclear Non-Proliferation Treaty: Encyclopedia II - Nuclear Non-Proliferation Treaty - Treaty pillars

Nuclear fission: Encyclopedia II - Nuclear fuel cycle - Front end

1 Uranium ore - the principal raw material of nuclear fuel 2 Yellowcake - the form in which uranium is transported to an enrichement plant 3 UF6 - used in enrichement 4 Nuclear fuel - a compact, inert, insoluble solid Nuclear fuel cycle - Exploration. A deposit of uranium, discovered by geophysical techniques, is evaluated and sampled to determine the amounts of uranium materials that are extractable at specified costs from the deposit. Uraniu ...

See also:

Nuclear fuel cycle, Nuclear fuel cycle - Front end, Nuclear fuel cycle - Exploration, Nuclear fuel cycle - Mining, Nuclear fuel cycle - Milling, Nuclear fuel cycle - Uranium conversion, Nuclear fuel cycle - Enrichment, Nuclear fuel cycle - Fabrication, Nuclear fuel cycle - Service period, Nuclear fuel cycle - Transport of Radioactive Materials, Nuclear fuel cycle - In-core fuel management, Nuclear fuel cycle - On-Load Reactors, Nuclear fuel cycle - Back end, Nuclear fuel cycle - Interim Storage, Nuclear fuel cycle - Reprocessing, Nuclear fuel cycle - Waste disposal

Read more here: » Nuclear fuel cycle: Encyclopedia II - Nuclear fuel cycle - Front end

Nuclear fission: Encyclopedia II - NRX - Design

A heavy water moderated reactor is governed by two main processes. First, the water slows down (moderates) the neutrons which are produced by nuclear fission, increasing the chances of the high energy neutrons causing further fission reactions. Second, control rods absorb neutrons and adjust the power level or shut down the reactor in the course of normal operation. Either inserting the control rods or removing the heavy water mo ...

See also:

NRX, NRX - Design, NRX - History

Read more here: » NRX: Encyclopedia II - NRX - Design

Nuclear fission: Encyclopedia II - Nuclear Non-Proliferation Treaty - Treaty pillars

Nuclear Non-Proliferation Treaty - First pillar: non-proliferation. Five states are permitted by the NPT to own nuclear weapons: France (signed 1992), the People's Republic of China (1992), Soviet Union (1968; obligations and rights assumed by Russia), United Kingdom (1968), and the United States (1968). These were the only states possessing such weapons at the time the treaty was opened to signature, and are also the five permanent members of the United Nations Security Council. These 5 Nuclear Weapons States (N ...

See also:

Nuclear Non-Proliferation Treaty, Nuclear Non-Proliferation Treaty - Treaty pillars, Nuclear Non-Proliferation Treaty - First pillar: non-proliferation, Nuclear Non-Proliferation Treaty - Second pillar: disarmament, Nuclear Non-Proliferation Treaty - Third pillar: the right to peacefully use nuclear technology, Nuclear Non-Proliferation Treaty - History, Nuclear Non-Proliferation Treaty - United States-NATO nuclear weapons sharing, Nuclear Non-Proliferation Treaty - India Pakistan Israel, Nuclear Non-Proliferation Treaty - North Korea, Nuclear Non-Proliferation Treaty - Iran, Nuclear Non-Proliferation Treaty - Leaving the Treaty, Nuclear Non-Proliferation Treaty - Future, Nuclear Non-Proliferation Treaty - Parties to the treaty

Read more here: » Nuclear Non-Proliferation Treaty: Encyclopedia II - Nuclear Non-Proliferation Treaty - Treaty pillars

Nuclear fission: Encyclopedia - 1939

1939 (MCMXXXIX) was a common year starting on Sunday (link will take you to calendar). 1939 - Events. January 2 - End of term for Frank Finley Merriam, 28th Governor of California. He is succeeded by Culbert Levy Olson. January 13 - Black Friday: 71 people die across Victoria in one of Australia's worst ever bushfires. January 24 - Earthquake kills 30.000 in Chile – about 50.000 sq mi razed January 26 - Spanish Civil War: Troops loyal to Francisco Franco and ...

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Read more here: » 1939: Encyclopedia - 1939

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