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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

McGraw-Hill Concise Encyclopedia of Physics. © 2002 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


(nuclear physics)
The nucleus of a deuterium atom, consisting of a neutron and a proton. Designated d. Also known as deuton.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Meyer, "Producion of 67Ga by deuteron bombardment of natural zinc," The International Journal of Applied Radiation and Isotopes, vol.
A deuteron is a simple atomic nucleus, or the core of an atom.
If the nuclear force were only a few percent weaker, then a proton could not combine with a neutron to form a deuteron. No deuterons would be formed in the sun, and hence there would be no solar fuel.
He and one of his students identified what is still known as the Oppenheimer-Phillips process: When a deuteron (formed from a proton and a neutron) bombards an atomic nucleus, the proton goes its separate way while the nucleus captures the neutron and becomes a new radioactive atom.
In 1940 Martin began his collaboration with Harry Berman at Harvard, on deuteron irradiation of diamonds; though Berman died during the war, Martin pursued their investigations in post-war days.
It was an American physicist, Robert Oppenheimer (1904-1967), who had demonstrated that deuteron bombardment was equivalent to neutron bombardment.
The team performed more than 700,000 quantum computing measurements of the energy of a deuteron, the nuclear bound state of a proton and a neutron.
Ahle et al., "Proton and deuteron production in Au + Au reactions at 11.6 AGeV/c," Physical Review C, vol.
Earlier, on the basis of this model the binding energy of the deuteron, triton and alpha particle have been determined [2], as well as many other parameters for both micro- and macrocosm [3-6].
Forty-two known isotopes of polonium exist [2], and interestingly the longest-lived isotopes, [sup.208]Po and [sup.209]Po with half-lives of about 2.9 a and 125 a, respectively, were not discovered until 1947 to 1949 [3, 4], with the advent of light, charged particle (alpha and deuteron) induced reactions with accelerators.
Kang et al., "Proton and deuteron rapidity distributions and nuclear stopping in [sup.96]Ru([sup.96]Zr) + [sup.96]Ru([sup.96]Zr) collisions at 400AMeV" Physical Review C, vol.