Definitions for Neutron
ˈnu trɒn, ˈnyu-neu·tron

Princeton's WordNetRate this definition:0.0 / 0 votes

1. neutronnoun

   an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus

WiktionaryRate this definition:0.0 / 0 votes

1. neutronnoun

   A subatomic particle forming part of the nucleus of an atom and having no charge; it is a combination of an up quark and two down quarks

   Symbol: n

WikipediaRate this definition:0.0 / 0 votes

1. Neutron

   The neutron is a subatomic particle, symbol n or n0, which has a neutral (not positive or negative) charge, and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms. Since protons and neutrons behave similarly within the nucleus, and each has a mass of approximately one atomic mass unit, they are both referred to as nucleons. Their properties and interactions are described by nuclear physics. Protons and neutrons are not elementary particles; each is composed of three quarks. The chemical properties of an atom are mostly determined by the configuration of electrons that orbit the atom's heavy nucleus. The electron configuration is determined by the charge of the nucleus, which is determined by the number of protons, or atomic number. The number of neutrons is the neutron number. Neutrons do not affect the electron configuration, but the sum of atomic and neutron numbers is the mass of the nucleus. Atoms of a chemical element that differ only in neutron number are called isotopes. For example, carbon, with atomic number 6, has an abundant isotope carbon-12 with 6 neutrons and a rare isotope carbon-13 with 7 neutrons. Some elements occur in nature with only one stable isotope, such as fluorine; Other elements occur with many stable isotopes, such as tin with ten stable isotopes, and some elements such as technetium have no stable isotope. The properties of an atomic nucleus depend on both atomic and neutron numbers. With their positive charge, the protons within the nucleus are repelled by the long-range electromagnetic force, but the much stronger, but short-range, nuclear force binds the nucleons closely together. Neutrons are required for the stability of nuclei, with the exception of the single-proton hydrogen nucleus. Neutrons are produced copiously in nuclear fission and fusion. They are a primary contributor to the nucleosynthesis of chemical elements within stars through fission, fusion, and neutron capture processes. The neutron is essential to the production of nuclear power. In the decade after the neutron was discovered by James Chadwick in 1932, neutrons were used to induce many different types of nuclear transmutations. With the discovery of nuclear fission in 1938, it was quickly realized that, if a fission event produced neutrons, each of these neutrons might cause further fission events, in a cascade known as a nuclear chain reaction. These events and findings led to the first self-sustaining nuclear reactor (Chicago Pile-1, 1942) and the first nuclear weapon (Trinity, 1945). Dedicated neutron sources like neutron generators, research reactors and spallation sources produce free neutrons for use in irradiation and in neutron scattering experiments. A free neutron spontaneously decays to a proton, an electron, and an antineutrino, with a mean lifetime of about 15 minutes. Free neutrons do not directly ionize atoms, but they do indirectly cause ionizing radiation, so they can be a biological hazard, depending on dose. A small natural "neutron background" flux of free neutrons exists on Earth, caused by cosmic ray showers, and by the natural radioactivity of spontaneously fissionable elements in the Earth's crust.

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1. neutron

   A neutron is a subatomic particle that is found in the nucleus of an atom. It has no electrical charge and has a mass slightly larger than that of a proton. Together with protons, neutrons make up almost all of the atomic mass. Neutrons play a key role in nuclear reactions, such as nuclear fission.

WikidataRate this definition:0.0 / 0 votes

1. Neutron

   The neutron is a subatomic hadron particle which has the symbol n or n0, no net electric charge and a mass slightly larger than that of a proton. With the exception of hydrogen-1, nuclei of atoms consist of protons and neutrons, which are therefore collectively referred to as nucleons. The number of protons in a nucleus is the atomic number and defines the type of element the atom forms. Neutrons are necessary within an atomic nucleus as they bind with protons via the nuclear force; protons are unable to bind with each other because their mutual electromagnetic repulsion is stronger than the attraction of the nuclear force. The number of neutrons is the neutron number and determines the isotope of an element. For example, the abundant carbon-12 isotope has 6 protons and 6 neutrons, while the very rare radioactive carbon-14 isotope has 6 protons and 8 neutrons. While bound neutrons in nuclei are stable, free neutrons are unstable; they undergo beta decay with a mean lifetime of just under 15 minutes. Free neutrons are produced in nuclear fission and fusion. Dedicated neutron sources like neutron generators, research reactors and spallation sources produce free neutrons for use in irradiation and in neutron scattering experiments. Even though it is not a chemical element, the free neutron is sometimes included in tables of nuclides.

Matched Categories

1. • Nucleon

Usage in printed sourcesFrom: 

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Anagrams for Neutron »

1. nontrue

How to pronounce Neutron?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Neutron in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Neutron in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of Neutron in Pythagorean Numerology is: 8

Examples of Neutron in a Sentence

1. Hannah Earnshaw:

   This result is a step towards understanding some of the rarer and more extreme cases in which matter accretes onto black holes or neutron stars.

2. Jim Eckles:

   Every neutron splits an atom, two neutrons come out they each split atoms, they split four more and it's a chain reaction, and it cascades and it all happens in a billionth of a second. Boom, you've got a nuclear explosion.

3. Peter Tuthill:

   The bones of these rare massive stars had to be out there, but they seemed to shroud themselves in mystery, the oldest neutron stars and black holes were created when the galaxy was younger and shaped differently, and then subjected to complex changes spanning billions of years. It has been a major task to model all of this to find them.

4. Abhay Ashtekar:

   Gravitational waves are literally ripples in the curvature of space-time that are caused by collisions of heavy and compact objects like black holes and neutron stars.

5. Scott Ransom:

   Neutron stars have this tipping point where their interior densities get so extreme that the force of gravity overwhelms even the ability of neutrons to resist further collapse, each most massive neutron star we find brings us closer to identifying that tipping point and helping us to understand the physics of matter at these mind-boggling densities.

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Neutron
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Neutron
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Neutron
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Neutron
6. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=Neutron