Sentence examples for positron from inspiring English sources

These data show that the positron fraction does indeed rise with energy, just as theory predicts.

If pulsars are responsible, theory predicts that the positron fraction should decline steadily at energies above this value.

But if they do exist and make up the bulk of dark matter in the cosmos they ought to leave traces that AMS can detect.When two neutralinos bump into each other, the theory goes, they should annihilate one another and produce in their stead an electron and its antimatter equivalent, a positron.

If high-energy cosmic positrons do indeed come mainly from dark-matter annihilation, however, then the "positron fraction" should rise with energy, and peak when it reaches the mass of a neutralino.

For decades, physicists at CERN and elsewhere have been trying to overcome these limitations with antihydrogen, which consists of a single positron orbiting a single antiproton.

The body's chief source of energy is glucose, and it is possible to get a good idea of local energy consumption by injecting somebody with a form of glucose that contains fluorine-18, another positron emitter.

The nuns (the researchers hope to recruit 15 in all) will also have their brains scanned using positron-emission tomography and functional magnetic-resonance imaging, the most powerful brain-imaging tools available.In this section A mystical union Hair today Seeing c Wet, wet, wet?

That would mean it could be used in a scanning technique called positron-emission tomography (PET).

According to Dr Conway, scans taken using a technique called positron-emission tomography show significant changes in brain activity starting three months after treatment begins.

The positrons employed in positron-emission tomography (PET), a scanning technique used, among other things, for detecting cancer, are the antimatter equivalent of electrons.

Positrons emitted by earthly radioactive sources such as isotopes of sodium are now used routinely in many areas (the familiar hospital PET scan stands for "positron-emission tomography").Mathematically, particles and their anti-versions actually differ in two ways.