Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /storage/content/38/170138/ on line 126 - Things of interest - Antiprotonic helium
If you were to mix antiprotons with ordinary matter, the particles would annihilate in less than a picosecond.
But there is an exception. Mixed with helium gas, about 3% of the antiprotons will combine with helium atoms, forming antiprotinic helium.
Antiprotonic helium consists of a antiproton and an electron orbiting a helium nucleus (two protons and two neutrons). They can exist for up to tens of microseconds, before decaying.
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