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| 2. |
- Gatchell, Michael, et al.
(författare)
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Protonated Clusters of Neon and Krypton
- 2019
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Ingår i: Journal of the American Society for Mass Spectrometry. - : American Chemical Society (ACS). - 1044-0305 .- 1879-1123. ; 30:12, s. 2632-2636
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Tidskriftsartikel (refereegranskat)abstract
- We present a study of cationic and protonated clusters of neon and krypton. Recent studies using argon have shown that protonated rare gas clusters can have very different magic sizes than pure, cationic clusters. Here, we find that neon behaves similarly to argon, but that the cationic krypton is more similar to its protonated counterparts than the lighter rare gases are, sharing many of the same magic numbers.
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| 3. |
- Kappe, Miriam, et al.
(författare)
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Spectroscopy of helium-tagged C60 anions
- 2024
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Ingår i: Physical Review Research. - 2643-1564. ; 6:1
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Tidskriftsartikel (refereegranskat)abstract
- We present measurements of the electronic absorption spectrum of He -tagged buckminsterfullerene anions, C60-. Using a technique that allows for the efficient tagging of complex molecular anions with He, we achieve atomically resolved action spectra that provide an accurate determination of the gas -phase absorption spectrum in the near -infrared In total we 27 bands between 895 and 1057 nm.
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| 4. |
- Kranabetter, Lorenz, et al.
(författare)
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Considerable matrix shift in the electronic transitions of helium-solvated cesium dimer cation Cs2He+n
- 2019
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Ingår i: Physical Chemistry, Chemical Physics - PCCP. - : Royal Society of Chemistry (RSC). - 1463-9076 .- 1463-9084. ; 21:45, s. 25362-25368
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Tidskriftsartikel (refereegranskat)abstract
- We investigate the photodissociation of helium-solvated cesium dimer cations using action spectroscopy and quantum chemical calculations. The spectrum of Cs2He+ shows three distinct absorption bands into both bound and dissociative states. Upon solvation with further helium atoms, considerable shifts of the absorption bands are observed, exceeding 0.1 eV (850 cm(-1)) already for Cs2He10+, along with significant broadening. The shifts are highly sensitive to the character of the excited state. Our calculations show that helium atoms adsorb on the ends of Cs-2(+). The shifts are particularly pronounced if the excited state orbitals extend to the area occupied by the helium atoms. In this case, Pauli repulsion leads to a deformation of the excited state orbitals, resulting in the observed blue shift of the transition. Since the position of the weakly bound helium atoms is ill defined, Pauli repulsion also explains the broadening.
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