nêutron wikipedia - EAS
- 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.
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See all on Wikipediahttps://en.wikipedia.org/wiki/NeutronThe neutron is a subatomic particle, symbol n or n , 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 … See more
An atomic nucleus is formed by a number of protons, Z (the atomic number), and a number of neutrons, N (the neutron number), bound together by the nuclear force. The atomic number determines the chemical properties of … See more
Within the theoretical framework of Standard Model for particle physics, the neutron is composed of two down quarks and an up quark. The only possible decay mode for the neutron that conserves baryon number is for one of the neutron's quarks to See more
Dineutrons and tetraneutrons
The existence of stable clusters of 4 neutrons, or tetraneutrons, has been hypothesised by a team led by Francisco-Miguel Marqués at the CNRS Laboratory for Nuclear Physics based on observations of the disintegration of See moreThe story of the discovery of the neutron and its properties is central to the extraordinary developments in atomic physics that … See more
Since interacting protons have a mutual electromagnetic repulsion that is stronger than their attractive nuclear interaction, neutrons are a … See more
Mass
The mass of a neutron cannot be directly determined by mass spectrometry since it has no electric charge. But since the masses of a proton and of a deuteron can be measured with a mass spectrometer, the mass of a … See moreThe common means of detecting a charged particle by looking for a track of ionization (such as in a cloud chamber) does not work for neutrons directly. Neutrons that … See more
Wikipedia text under CC-BY-SA license- https://fr.wikipedia.org/wiki/Neutron
Le neutron est une particule subatomique de charge électrique nulle.
Les neutrons sont présents dans le noyau des atomes, liés avec des protons par l'interaction forte. Alors que le nombre de protons d'un noyau détermine son élément chimique, le nombre de neutrons détermine son isotope. Les neutrons liés dans un noyau atomique sont en général stables mais les neutrons libres sont instables : ils se désintègrent en un peu moins de 15 minut…Wikipedia · Text under CC-BY-SA license - https://simple.wikipedia.org/wiki/Neutron
A neutron is made of two down quarks and one up quark. One up quark has a charge of +2/3, and the two down quarks each have a charge of -1/3. The fact that these charges cancel out is …
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- https://hu.wikipedia.org/wiki/NeutronSee more on hu.wikipedia.org1930-ban Walther Bothe és H. Becker (Németország) azt találták, hogy ha nagy energiájú alfa-részecskékkel bizonyos könnyű elemeket (berillium, bór, lítium) bombáznak, akkor egy rendkívüli áthatolóképességű sugárzás keletkezik. Először ezt röntgensugárzásnakgondolták, bár annál is nagyobb volt az áthato…
- Osztályozás: barion
- Jel: n, n°
- https://en.wikipedia.org/wiki/Discovery_of_the_neutron
- The discovery of the neutron and its properties was central to the extraordinary developments in atomic physics in the first half of the 20th century. Early in the century, Ernest Rutherford developed a crude model of the atom,: 188 based on the gold foil experiment of Hans Geiger and Ernest Marsden. In this model, atoms had their mass and positive...
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- https://en.wikipedia.org/wiki/Neutron_star
Neutron stars have a radius on the order of 10 kilometres (6 mi) and a mass of about 1.4 solar masses.[3] They result from the supernovaexplosion of a massive star, combined with gravitational collapse, that compresses the core …
- https://en.wikipedia.org/wiki/Neutron_radiation
Neutron radiation is a form of ionizing radiation that presents as free neutrons.Typical phenomena are nuclear fission or nuclear fusion causing the release of free neutrons, which …
- https://en.wikipedia.org/wiki/Neutron_bomb
A neutron bomb, officially defined as a type of enhanced radiation weapon, is a low-yield thermonuclear weapon designed to maximize lethal neutron radiation in the immediate vicinity of the blast while minimizing the …
- https://cs.wikipedia.org/wiki/Objev_neutronu
Objev neutronu byl důležitým bodem v rozvoji atomové fyziky. Neutron předpověděl na začátku 20. let 20. století Ernest Rutherford. Walther Bothe a Herbert Becker objevili v roce 1931 tzv. berylliové záření. Jeho studiem se dále …
- https://vi.wikipedia.org/wiki/Kích_hoạt_neutron
Thêm. Bách khoa toàn thư mở Wikipedia. Kích hoạt neutron là quá trình dùng bức xạ neutron để gây ra phóng xạ cảm ứng trong vật liệu. Trong quá trình này các neutron tự do đã đi vào …
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