Rovibrational spectroscopy of the CH${}^{+}$-He and CH${}^{+}$-He${}_4$ complexes

Thomas Salomon, José L. Doménech, Philipp C. Schmid +3

A cryogenic 22-pole ion trap apparatus is used in combination with a table-top pulsed IR source to probe weakly bound CH${}^{+}$-He and CH${}^{+}$-He${}_4$ complexes by predissociation spect…