Definitions for protonium
pro·to·ni·um

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1. protoniumnoun

   An exotic atom consisting of a proton bound to an antiproton

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1. Protonium

   Protonium (symbol: Pn), also known as antiprotonic hydrogen, is a type of exotic atom in which a proton (symbol: p) and an antiproton (symbol: p) orbit each other. Since protonium is a bound system of a particle and its corresponding antiparticle, it is an example of a type of exotic atom called an onium. Protonium has a mean lifetime of approximately 1.0 μs and a binding energy of −0.75 keV.Like all onia, protonium is a boson with all quantum numbers (baryon number, flavour quantum numbers, etc.) and electrical charge equal to 0.

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1. Protonium

   Protonium is an exotic atom in which a proton and an antiproton orbit each other. Protonium is an electrically neutral boson with zero baryon number. There are two known methods to generate protonium. One method involves violent particle collisions. The other method involves putting antiprotons and protons into the same magnetic cage. The latter method was first used during the experiment ATHENA by Evandro Lodi Rizzini's working group at the CERN laboratory in Geneva in 2002, but it was not until 2006 that scientists realized protonium was also generated during the experiment. Reactions involving a proton and an antiproton at high energies give rise to many-particle final states. In fact, such reactions are the basis of particle colliders such as the Tevatron at Fermilab. Indirect searches for protonium at LEAR have used antiprotons impinging on nuclei such as helium, with unclear results. Very low energy collisions in the range of 10 eV to 1 keV may lead to the formation of protonium. Planned experiments will use traps as the source of low energy antiprotons. Such a beam would be allowed to impinge on atomic hydrogen targets, in the field of a laser, which is meant to excite the bound proton-antiproton pairs into an excited state of protonium with some efficiency. Unbound particles are rejected by bending them in a magnetic field. Since the protonium is uncharged, it will not be deflected by such a field. This undeflected protonium, if formed, would be allowed to traverse a meter of high vacuum, within which it is expected to decay via annihilation of the proton and antiproton. The decay products would give unmistakable signatures of the formation of protonium.

Anagrams for protonium »

1. motuporin

How to pronounce protonium?

1. Alex

   US English

   David

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   Mark

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   Daniel

   British

   Libby

   British

   Mia

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   Karen

   Australian

   Hayley

   Australian

   Natasha

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   Indian

   Priya

   Indian

   Neerja

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   Oliver

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   South African

How to say protonium in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of protonium in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of protonium in Pythagorean Numerology is: 6

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Protonium
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Protonium
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=protonium