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...easiest way to use H-2 as a moderator is to use purified, ''heavy water'' (deuterium oxide, often symbolized as D₂O) as both a moderator and coolant.

<tr><td> D <td> [[Deuterium]] (²H)

...l. 263</ref><ref>Pons S, Fleischmann M (1990) Calorimetry of the Palladium-Deuterium System, in The First Annual Conference on Cold Fusion, F. Will, Editor Nati ...smutation'' for which the [[Coulomb barrier]] is even greater than between deuterium nuclei.

...r/tamper, with remainder (2.4 megatons) coming directly from fusion of the deuterium fuel.

...addition of one or two neutrons to the hydrogen atom forms the isotopes [[deuterium]] (²H) or [[tritium]] (³H), respectively. In [[nucle

...stable [[isotope]]s. Only the stable isotopes protium (¹H) and deuterium (²H = D) occur in sizeable quantities in nature. The isotope tri ...and has a boiling point of 20.28 K and a melting point of 14.01 K. For the deuterium molecule these temperatures are about 4 K higher: D₂ has boiling

...frequency lock. The resonance frequency of the reference nucleus (usually deuterium) is measured; this is a highly sensitive indicator of the effective magneti

...ne end and an ion target at the other end. The space between them contains deuterium, tritium, or some mixture depending on the specific generator design. Elec

<tr><td>[[Deuterium]]</td><td>²H or D</td><td>1</td><td>1.44 e-6</td>

...nt of helium-4 (4He) (24% of total mass) and trace amounts of the isotopes deuterium (2H), helium-3 (3He) and lithium (7Li). Subsequently the interstellar mediu

...rned out be a Soviet spy. All participants agreed that the ignition of the deuterium requires so much energy that it can only be delivered by a conventional ato ...ve [[isotope]] tritium would be needed to start a fusion chain reaction of deuterium nuclei. Shortly after the conference, Teller drafted a conference report th

===Deuterium, ³He, ⁴He, and ⁷Li abundances=== ...unts for the abundant distribution of the light nuclear isotopes hydrogen, deuterium, helium-3, helium-

...k matter then the early universe would have had to produce more helium and deuterium than could possibly exist. Possible types of DM are:

..., while an ideal gas consisting of D (= ²H) atoms is fermionic. Deuterium consists of three fermions: a proton, a neutron, and an electron. Simultane

...ymmetrisation]] on the substrate (replacing hydrogen by [[isotope labeling|deuterium]]) it can be demonstrated that the reaction proceeds not through the symmet

<tr><td>[[Deuterium]]</td><td>²H or D</td><td>1</td><td>1.44 e-6</td>

...rotium isotope has been replaced by the [[deuterium isotope]] of hydrogen. Deuterium is a stable isotope of hydrogen with a natural abundance in the oceans of [

...rotium isotope has been replaced by the [[deuterium isotope]] of hydrogen. Deuterium is a stable isotope of hydrogen with a natural abundance in the oceans of [

...in [[organic chemistry]]. Briefly, replacing normal hydrogen (protons) by deuterium within a chemical compound causes the rate of molecular vibration (C-H, N-H *H-2 (deuterium), the stable isotope of hydrogen, is a stable tracer, the concentration of

...er then the early universe would have had to produce more [[helium]] and [[deuterium]] than could possibly exist—not enough room for all of it.