Observation of a shape resonance of the positronium negative ion

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.

Bibliographic Details
Main Authors: Koji Michishio, Tsuneto Kanai, Susumu Kuma, Toshiyuki Azuma, Ken Wada, Izumi Mochizuki, Toshio Hyodo, Akira Yagishita, Yasuyuki Nagashima
Format: Article
Language:English
Published: Nature Publishing Group 2016-03-01
Series:Nature Communications
Online Access:https://doi.org/10.1038/ncomms11060