antiproton

To make cold antihydrogen, the experimenters must slow down the antiprotons to a temperature similar to that of the positrons.

The antiprotons are then pushed into the same trap as the positrons and left to mingle for a second or so.

It has developed better techniques for cooling both positrons and antiprotons, which should allow it to trap more anti-atoms.

Successive bunches of antiprotons from the Antiproton Decelerator can be added to the trap, a process invented by TRAP called stacking.

A chain of reactions, starting with a beam of laser-excited cesium atoms, transfers the positrons to the antiprotons to form antihydrogen.

Coaxing hot and bothered antiprotons and positrons to couple is quite a task.

The best concepts for antimatter propulsion require that the antiprotons be collected and isolated.

Pairs of protons and antiprotons are also directly produced in the cosmic ray collisions with the atmosphere.

To trap antiprotons, one would have to reverse the electric field, thus inverting the potential.

Physicists have long suspected that antiprotons must become trapped in a belt around Earth. Now they've found it.

The antineutrons escape the atmosphere and then decay into antiprotons at much higher altitudes.

In 2006, these guys launched a spacecraft called PAMELA into low Earth orbit, specifically to look for antiprotons in cosmic rays.

A small number of antiprotons constantly sleet down from space among cosmic rays.

After a collection period, these antiprotons are released and detected by their annihilations on the nearby walls.

Antiprotons are particles with the same mass as more familiar protons but with opposite charge.

Producing enough antiprotons to bend the space-time continuum looks near impossible as far as our current technology goes.

This constitutes "the most abundant source of antiprotons near the Earth" , say the PAMELA team.

Unfortunately hadrons, such as protons and antiprotons, are made of smaller bits called quarks.

The machine sends pulses of antiprotons about every hundred seconds into cold helium gas.

This process produces, among other particles, a high-energy pulse of antiprotons.

Next, an electrical field is used to kick out any remaining positrons and antiprotons.

Lo and behold , these guys found 28 antiprotons.

Instead they would produce gamma rays, neutrinos and antimatter such as positrons and antiprotons, Gondolo said.