NatureSir Norman Lockyer Macmillan Journals Limited, 2007 |
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Página 153
... Positronium gets it together . a , In free space , two atoms of positronium ( each consisting of an electron and its antiparticle , the positron ) cannot combine to form a molecule - owing to their excess of energy , they simply fly ...
... Positronium gets it together . a , In free space , two atoms of positronium ( each consisting of an electron and its antiparticle , the positron ) cannot combine to form a molecule - owing to their excess of energy , they simply fly ...
Página 195
... positronium or Ps ( ref . 1 ) . In 1946 , Wheeler speculated that two Ps atoms may combine to form the di- positronium molecule ( Ps2 ) , with a binding energy3 of 0.4 eV . More recently , this molecule has been studied theoretically ...
... positronium or Ps ( ref . 1 ) . In 1946 , Wheeler speculated that two Ps atoms may combine to form the di- positronium molecule ( Ps2 ) , with a binding energy3 of 0.4 eV . More recently , this molecule has been studied theoretically ...
Página 197
... positronium . Our experiments suggest that a single - crystal quartz surface might be a good source of Ps2 molecules , and work is underway to make a direct observation using a laser to excite a res- onant molecular transition27,28 ...
... positronium . Our experiments suggest that a single - crystal quartz surface might be a good source of Ps2 molecules , and work is underway to make a direct observation using a laser to excite a res- onant molecular transition27,28 ...
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