Abstract
The wave functions of a number of positron-atom complexes are analyzed and three of the systems, namely, e+Be, e+Na, and e +He(3Se), are seen to exhibit quantum halo structures with 45%-50% of their probability distribution lying in the large r classically forbidden region. The mean square distance between the large r fragments (e+ + Be, Ps + Na+, Ps + He+) for these systems range from 1.8 to 2.2 times larger than the square of the classical turning point, another indication of their halolike nature. � 2005 The American Physical Society.
| Original language | English |
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| Pages (from-to) | 33402.1-33402.4 |
| Journal | Physical Review Letters |
| Volume | 94 |
| Issue number | 3 |
| Publication status | Published - 2005 |