LABORATORY ROTATIONAL SPECTRUM OF l-C{sub 3}H{sup +} AND CONFIRMATION OF ITS ASTRONOMICAL DETECTION

Journal Article · Sat Mar 01 00:00:00 EST 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/783/1/L4· OSTI ID:22363959

Brünken, Sandra; Kluge, Lars; Stoffels, Alexander; Asvany, Oskar; Schlemmer, Stephan ^[1]

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1. I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln (Germany)

The rotational spectrum of l-C{sub 3}H{sup +} has been measured in the millimeter-wave band in a 4 K cryogenic ion trap apparatus employing a novel mass-selective action spectroscopy method based on light induced reactions (LIR). Line positions of four rotational transitions (J = 1-2 up to J = 4-5) were observed with a relative precision of 3 × 10{sup –7}. The experimental transition frequencies and derived spectroscopic constants agree with those from recent astronomical observations, and unambiguously confirm the detection of this astrochemically relevant carbocation in the Horsehead photodissociation region and toward Sgr B2(N)

• OSTI ID: 22363959
• Journal Information: Astrophysical Journal Letters, Vol. 783, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABUNDANCE
ACCURACY
DETECTION
DISSOCIATION
MASS SPECTROSCOPY
MOLECULAR IONS
MOLECULES
PHOTOLYSIS
TRAPS
VISIBLE RADIATION