Observation of a long-lived triplet excited state and strong electron correlation effects in the copper oxide anion (CuO-) using cryogenic photoelectron imaging

Article Chemistry, Physical

Vibrationally- and rotationally-resolved photoelectron imaging of cryogenically-cooled SbO2-

G. Stephen Kocheril et al.

Summary: We conducted a temperature-controlled photoelectron imaging study on SbO2-, which was produced from a laser vaporisation source and cooled in a cryogenic 3D Paul trap. We obtained vibrationally resolved photoelectron spectra for the ground state detachment transition and determined the bending frequencies for both SbO2 and SbO2-. Franck-Condon simulations allowed us to estimate the vibrational temperature of the trapped SbO2- anion. We also obtained a near-threshold spectrum of SbO2- at a photon energy of 3.4958 eV, revealing partially resolved rotational structure and providing an accurate measurement of the electron affinity of SbO2.

MOLECULAR PHYSICS (2023)

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Article Chemistry, Physical

Photoelectron imaging of cryogenically cooled BiO- and BiO2- anions

G. Stephen Kocheril et al.

Summary: The development of ion traps as cooling devices has transformed ion spectroscopy, enabling efficient vibrational and rotational cooling for high-resolution experiments. A new experimental apparatus combining a cryogenic 3D Paul trap with a laser vaporization cluster source has been utilized for high-resolution photoelectron imaging of cold cluster anions, demonstrating efficient cooling of BiO- and BiO2- and accurate measurement of their electron affinities and vibrational frequencies.

JOURNAL OF CHEMICAL PHYSICS (2022)

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Article Chemistry, Physical