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Electronic spectroscopy of He@C+60 for astrochemical consideration

Electronic spectroscopy of He@C+60 for astrochemical consideration
Electronic spectroscopy of He@C+60 for astrochemical consideration
The electronic spectrum of the endohedral fullerene He@C+60 observed by messenger spectroscopy in a cryogenic ion trap is presented. The role played by the messanger tag in the adopted experimental method is evaluated by recording spectra of He@C+60 − Hen with n = 1−4. The results indicate a linear shift of ∼ 0.7 Å in the wavelengths allowing accurate gas phase values to be reported. The presence of the helium inside the cage shifts the absorption bands by 2−3 Å toward shorter wavelengths compared to C+60. The magnitude of this displacement will enable searches for the spectral signatures of this fullerene analogue in interstellar environments by absorption spectroscopy. The implications for potential astronomical detection are discussed.
0004-637X
1-5
Campbell, Ewen K.
48dba13b-17d0-4d53-b21b-5260a1263803
Reedy, E.S.
858411b5-2bca-4514-b667-fa74dc8e84db
Rademacher, J.
4c05fab3-c608-42c7-a862-1554398d7dd0
Whitby, Richard J.
45632236-ab00-4ad0-a02d-6209043e818b
Hoffman, Gabriela
8b98ba1c-ee09-4922-82e4-a9240aa12e64
Campbell, Ewen K.
48dba13b-17d0-4d53-b21b-5260a1263803
Reedy, E.S.
858411b5-2bca-4514-b667-fa74dc8e84db
Rademacher, J.
4c05fab3-c608-42c7-a862-1554398d7dd0
Whitby, Richard J.
45632236-ab00-4ad0-a02d-6209043e818b
Hoffman, Gabriela
8b98ba1c-ee09-4922-82e4-a9240aa12e64

Campbell, Ewen K., Reedy, E.S., Rademacher, J., Whitby, Richard J. and Hoffman, Gabriela (2020) Electronic spectroscopy of He@C+60 for astrochemical consideration. Astrophysical Journal, 897 (1), 1-5, [88]. (doi:10.3847/1538-4357/ab8dba).

Record type: Article

Abstract

The electronic spectrum of the endohedral fullerene He@C+60 observed by messenger spectroscopy in a cryogenic ion trap is presented. The role played by the messanger tag in the adopted experimental method is evaluated by recording spectra of He@C+60 − Hen with n = 1−4. The results indicate a linear shift of ∼ 0.7 Å in the wavelengths allowing accurate gas phase values to be reported. The presence of the helium inside the cage shifts the absorption bands by 2−3 Å toward shorter wavelengths compared to C+60. The magnitude of this displacement will enable searches for the spectral signatures of this fullerene analogue in interstellar environments by absorption spectroscopy. The implications for potential astronomical detection are discussed.

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Accepted/In Press date: 25 April 2020
Published date: 6 July 2020

Identifiers

Local EPrints ID: 441373
URI: http://eprints.soton.ac.uk/id/eprint/441373
ISSN: 0004-637X
PURE UUID: dd97b983-dc58-4deb-98eb-12e9b72bcc05
ORCID for Richard J. Whitby: ORCID iD orcid.org/0000-0002-9891-5502

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Date deposited: 10 Jun 2020 16:32
Last modified: 18 Feb 2021 16:33

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