Hyperfine-resolved rotational spectroscopy of HCNH

Hyperfine-resolved rotational spectroscopy of HCNH

The rotational spectrum of the molecular ion HCNH+ is revisited using double-resonance spectroscopy in an ion trap apparatus, with six transitions measured between 74 and 445 GHz. Due to the cryogenic temperature of the trap, the hyperfine splittings caused by the 14N quadrupolar nucleus were resolv...

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Veröffentlicht in:The Journal of chemical physics 2024-02, Vol.160 (7)
Hauptverfasser: Silva, Weslley G. D. P., Bonah, Luis, Schmid, Philipp C., Schlemmer, Stephan, Asvany, Oskar
Format: Artikel
Sprache:eng
Schlagworte:
Cryogenic temperature
Molecular ions
Quadrupole interaction
Quadrupoles
Rotational spectra
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Zusammenfassung:The rotational spectrum of the molecular ion HCNH+ is revisited using double-resonance spectroscopy in an ion trap apparatus, with six transitions measured between 74 and 445 GHz. Due to the cryogenic temperature of the trap, the hyperfine splittings caused by the 14N quadrupolar nucleus were resolved for transitions up to J = 4 ← 3, allowing for a refinement of the spectroscopic parameters previously reported, especially the quadrupole coupling constant eQq.
ISSN:0021-9606
1089-7690
DOI:10.1063/5.0185365