Observation of a shape resonance of the positronium negative ion
oleh: Koji Michishio, Tsuneto Kanai, Susumu Kuma, Toshiyuki Azuma, Ken Wada, Izumi Mochizuki, Toshio Hyodo, Akira Yagishita, Yasuyuki Nagashima
| Format: | Article |
|---|---|
| Diterbitkan: | Nature Portfolio 2016-03-01 |
Deskripsi
The Positronium negative ion is formed by two electrons bound to a positron, and experimental investigations of its states and energy levels are difficult due to its short lifetime. Here, the authors report on laser spectroscopy of positronium using a source of efficiently produced ions.