Deuteron


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

Deuteron

The nucleus of the atom of heavy hydrogen, 2H (deuterium). The deuteron d is composed of a proton and a neutron; it is the simplest multinucleon nucleus. Its binding energy is 2.227 MeV; that is, this is the amount of energy which must be added to a deuteron for it to dissociate into a proton and a neutron. Deuterons are much used as projectiles in nuclear bombardment experiments. See Nuclear reaction

Deuteron

 

the nucleus of the hydrogen atom isotope deuterium; mass number, 2. It is designated by2H, D, or d. A deuteron consists of one proton and one neutron. Its mass is 2.014102 atomic mass units; its nucleon binding energy, 2.22452 ± 0.00010 MeV; its spin, 1 (in ħ units); its magnetic moment, 0.857411 ± 0.000019 nuclear magnetons; and its nuclear electrical quadrupole moment, (2.738 ± 0.014)10-27 cm2.

Since the deuteron is the simplest nucleus containing more than one nucleon, the study of its properties has made it possible to determine the action radius of nuclear forces and to conclude that the interaction between a proton and a neutron in the nucleus does not have the character of a central force but depends on the mutual orientation of their spins. The nucleon spins in the deuteron are parallel. Deuterons (in contrast to protons) absorb neutrons poorly and, at the same time, owing to the closeness in their respective masses, strongly decelerate them. Deuterons are widely used in experimental nuclear physics as bombarding particles and as targets (for example, in the studies of nuclear reactions).

deuteron

[′düd·ə‚rän]
(nuclear physics)
The nucleus of a deuterium atom, consisting of a neutron and a proton. Designated d. Also known as deuton.
References in periodicals archive ?
Experiments with the deuteron would probe the same scales of energy as the Large Hadron Collider at CERN, the European Organization foruclear Research, and could lead to completely new discoveries in physics, Van Kolck said: "It's a different way to look for physics beyond the standard model.
Since neutrons are only rarely formed from protons, a relatively small number of deuterons are produced at any one time, and thus solar fuel (deuterons) constitutes but a tiny fraction of the total material in the sun.
Because the deuteron, carrying an electric charge, could be accelerated in a cyclotron and made very energetic.
The mass of equivalent to the Higgs boson mass are obtained, the coupling constants in different types of interactions, the binding energy of the deuteron, triton, and alpha particles are defined, the possible ranges of alpha particles energies are identified, and dependence of the nucleon-nucleon interaction from a distance is explained.
This is a rough heuristic estimate of the separation distance between the proton and neutron cores within the deuteron.
Paris, Parity Violating Interactions and Currents in the Deuteron, Phys.
In the case of the deuteron, one might expect it to look more like six quarks than two nucleons.
The proposed deuteron reactions, however, are either qualitatively or quantitatively inaccurate--barring an unnatural burst of high energy photons (photofission).
At SLAC, researchers obtained high-precision results for the quark spin contribution in the proton and deuteron (composed of a proton and neutron), confirming that the constituent quarks of both the proton and the neutron carry only a fraction of the particle's overall spin.
The sun's energy comes primarily from the fusion of two protons to form a deuteron, accompanied by the emission of a positron and a neutrino.
In a deuteron the proton-neutron binding energy is about 2.