Produced in an accelerator, these antiatoms lasted only 40 billionths of a second before annihilating
in collisions with particles of ordinary matter.
DeGruccio rumbles over even the faintest whiff of irony or social anger like a bulldozer annihilating
High-energy gamma rays easily collide with lower-energy gamma rays, annihilating
each other to produce pairs of subatomic particles.
A gesture that is normally performed with great care, and often a touch of sensuality and narcissism, became rapid, vulgar, and mechanical, annihilating
Where bulldozers and pesticides have failed, the cowbird is annihilating
the vireo by taking over the songbirds' nests, destroying its eggs and laying its own, said Sherry Teresa, executive director of the nonprofit Centers for Land Management, which is overseeing the trapping.
In a matter world, antimatter has the disadvantage of vanishing when it touches its matter equivalent, annihilating both itself and the bit of ordinary matter, and leaving behind pure energy in the form of gamma rays.
To keep the positrons from bouncing right out of the trap, the researchers slowed them down with nitrogen gas inside the trap -- enough to cool the positrons without annihilating them.
There are no plans to go out and randomly start annihilating
sheep,'' said Tim J.
Trapping changes the amount of energy that the positron brings to its annihilating
collision with an electron, and this in turn is reflected in the total energy of the escaping gamma rays.
The anti-hydrogen atoms created in the experiment were moving at nearly the speed of light and survived only some 40 billionths of a second before colliding with atoms of ordinary matter and annihilating