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Updated: May 27, 2025

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
Published on: August 25, 2016
High-resolution leak-out spectroscopy of HHe2
Thomas Salomon1, Carlo Baddeliyanage1, Carla Schladt1
1I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, D-50937, Köln, Germany. asvany@ph1.uni-koeln.de.
Abstract:
Applying a novel and universal action spectroscopic technique, called leak-out spectroscopy, this paper revisits the ν3 proton shuttle motion of the symmetric linear molecule He-H+-He. For this, a 4 K cryogenic ion trap apparatus has been combined with a high-resolution quantum cascade laser operating around 1300 cm-1. Seven rovibrational lines of this fundamental three-nucleus-four-electron system are recorded, demonstrating the suitability of the leak-out method for such fundamental hydrogen-helium cations.
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