antiatom

[an-tee-at-uhm, an-tahy-]

noun

Physics.

1. an atom of antimatter.

antiatom

1. An atom composed of antiparticles. An antiatom consists of positrons, antiprotons, and antineutrons. It has the same mass and spin as an ordinary atom, and the same amount of charge and magnetic moment, but the charge and magnetic moment are the opposite of those of an ordinary atom.

Word History and Origins

Origin of antiatom¹

First recorded in 1965–70; anti- + atom

Example Sentences

The purple brackets indicate a typical travel distance and potential change experienced by an antiatom with 0.1 K of axial energy in 1 ms.

From Nature

Each of the potential transitions would non-adiabatically perturb the kinetic energy of a charged antiatom; as noted above, these kicks correspond, approximately, to a random walk in energy.

From Nature

From the purple brackets shown in Fig. 1c, we see that an antiatom possessing this axial kinetic energy would experience a potential change of ΔΦ ≈ 100 V in 1 ms, although there are substantial uncertainties in this estimate due to variations in the potential over the volume of the trap, the distribution of kinetic energies and the potential changes arising from radial motion.

From Nature

Stochastic acceleration requires an element of randomness in the relation between the frequency of the driving-potential inversions and the frequencies of the antiatom orbital oscillations.

From Nature

A simple energy-diffusion model predicts that an antiatom with a putative charge Qe would gain energy of about .

From Nature