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Nuclear and Particle Data

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... Universe The Ten Commandments for Amateur Astronomers Other Fun Websites ABOUT US Nuclear and Particle Data Electron Proton Neutron Rest mass[kg] 9.1093897x10 -31 1.6726231x10 -27 1.6749286x10 -27 Molar mass[kg/mol] 5.4857990x10 -7 ...


PhysLink.com: Physics and Astronomy Online Portal

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... throughout space than previously thought. Holograms from Neutrons Created For the first time, scientists have used neutron beams to create holograms of large solid objects, rev-ealing details about their interiors in ways that ordinary ...


How are the protons and neutrons held together in a nucleus?

www.physlink.com/Education/AskExperts/ae565.cfm

... as a "leakage" or "residue" of the colour force between the quarks of the proton and the quarks of the neutron that pulls the proton and the neutron together. This residual colour force therefore manifests itself as the strong nuclear ...


What kind of forces hold the protons and neutrons together in the ...

www.physlink.com/Education/AskExperts/ae361.cfm

What kind of forces hold the protons and neutrons together in the nucleus?        Home Reference Education Directories Science eStore Job Board Ask The Experts eGreetings Fun About Us Welcome to PhysLink.com - Your physics and ...


Why are there usually more neutrons than protons in a heavy element? ...

www.physlink.com/Education/AskExperts/ae387.cfm

... decay or spontaneous fission. To view this in quantum mechanical terms, the proton potential well is not as deep as the neutron well due to the electrostatic repulsion. [Due to the Pauli exclusion principle, you only get two particles per ...


Since there are such things as anti-electrons and anti-protons, is ...

www.physlink.com/Education/AskExperts/ae117.cfm

... they are composed of smaller particles called quarks. A proton contains two up quarks and one down quark (uud), and a neutron contains one up and two down quarks (udd). the up quark has a charge of +2/3 and the down quark has a charge of ...


What are the upper and lower limits for the mass of a neutron star? - ...

www.physlink.com/Education/AskExperts/ae668.cfm

... degeneracy is not enough to overcome the force of gravity and a neutron star can result. A neutron star is basically a giant neutron, with all matter compressed to a maximum density allowed for matter. A single teaspoon of neutron matter ...


If we have not yet discovered a method of seperating quarks from each ...

www.physlink.com/Education/AskExperts/ae609.cfm

... and neutrons collide, decay, and in general interact. Quarks have never been observed directly, but every particle that a neutron or a proton can decay into can be explained in terms of "quark channels." These "channels" are simply ...


Why the masses of proton and neutron are not exactly equal?

www.physlink.com/Education/AskExperts/ae506.cfm

... of 0.0074 u. This does not mean, however, that a proton weighs 0.0168 u or that the neutron weighs 0.0195 u, for they obviously weigh far more (proton, 1.007277 u; neutron, 1.008665 u; this excess weight is due to force interactions ...


Which is larger, the proton or the neutron?

www.physlink.com/Education/AskExperts/ae570.cfm

... closer, sometimes further, but maintaining an average radius of around 1 fm (one fem-tometer, or 10^-25 meters) for both the neutron and proton. Unfortunately, that model fails outrageously if you look at neutrons/protons at all closely. ...


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