Laboratory detection and submillimeter spectrum of the NaS radical (X2IIi)

B. Z. Li; L. M. Ziurys

doi:10.1086/310922

Laboratory detection and submillimeter spectrum of the NaS radical (X²II_i)

B. Z. Li, L. M. Ziurys

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The sodium sulfide radical NaS has been observed in the laboratory for the first time using millimeter/ submillimeter direct absorption spectroscopy. Twelve rotational transitions originating in both the Ω = 1/2 and 3/2 sublevels of this species in its X²II_i ground state were recorded in the frequency range 200-400 GHz. Splittings arising from lambda-doubling interactions were resolved in both spin-orbit components and were particularly large (∼2.9 GHz) in the Ω = 1/2 substate. The data were analyzed using a ²II Hamiltonian, and rotational, spin-orbit, and lambda-doubling parameters were determined. NaS may be detectable in the late-type star IRC + 10216, given the observation of CS, SiS, NaCl, and NaCN in this object.

Original language	English (US)
Pages (from-to)	L137-L140
Journal	Astrophysical Journal
Volume	488
Issue number	2 PART II
DOIs	https://doi.org/10.1086/310922
State	Published - 1997

Keywords

ISM: molecules
Line: identification
Molecular data

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/310922

Cite this

@article{cd1ffba43fa1494e980da5238259914d,

title = "Laboratory detection and submillimeter spectrum of the NaS radical (X2IIi)",

abstract = "The sodium sulfide radical NaS has been observed in the laboratory for the first time using millimeter/ submillimeter direct absorption spectroscopy. Twelve rotational transitions originating in both the Ω = 1/2 and 3/2 sublevels of this species in its X2IIi ground state were recorded in the frequency range 200-400 GHz. Splittings arising from lambda-doubling interactions were resolved in both spin-orbit components and were particularly large (∼2.9 GHz) in the Ω = 1/2 substate. The data were analyzed using a 2II Hamiltonian, and rotational, spin-orbit, and lambda-doubling parameters were determined. NaS may be detectable in the late-type star IRC + 10216, given the observation of CS, SiS, NaCl, and NaCN in this object.",

keywords = "ISM: molecules, Line: identification, Molecular data",

author = "Li, {B. Z.} and Ziurys, {L. M.}",

note = "Funding Information: This research was supported by NSF grant AST-95-03274 and NASA grant NAGW 2989.",

year = "1997",

doi = "10.1086/310922",

language = "English (US)",

volume = "488",

pages = "L137--L140",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 PART II",

}

TY - JOUR

T1 - Laboratory detection and submillimeter spectrum of the NaS radical (X2IIi)

AU - Li, B. Z.

AU - Ziurys, L. M.

N1 - Funding Information: This research was supported by NSF grant AST-95-03274 and NASA grant NAGW 2989.

PY - 1997

Y1 - 1997

N2 - The sodium sulfide radical NaS has been observed in the laboratory for the first time using millimeter/ submillimeter direct absorption spectroscopy. Twelve rotational transitions originating in both the Ω = 1/2 and 3/2 sublevels of this species in its X2IIi ground state were recorded in the frequency range 200-400 GHz. Splittings arising from lambda-doubling interactions were resolved in both spin-orbit components and were particularly large (∼2.9 GHz) in the Ω = 1/2 substate. The data were analyzed using a 2II Hamiltonian, and rotational, spin-orbit, and lambda-doubling parameters were determined. NaS may be detectable in the late-type star IRC + 10216, given the observation of CS, SiS, NaCl, and NaCN in this object.

AB - The sodium sulfide radical NaS has been observed in the laboratory for the first time using millimeter/ submillimeter direct absorption spectroscopy. Twelve rotational transitions originating in both the Ω = 1/2 and 3/2 sublevels of this species in its X2IIi ground state were recorded in the frequency range 200-400 GHz. Splittings arising from lambda-doubling interactions were resolved in both spin-orbit components and were particularly large (∼2.9 GHz) in the Ω = 1/2 substate. The data were analyzed using a 2II Hamiltonian, and rotational, spin-orbit, and lambda-doubling parameters were determined. NaS may be detectable in the late-type star IRC + 10216, given the observation of CS, SiS, NaCl, and NaCN in this object.

KW - ISM: molecules

KW - Line: identification

KW - Molecular data

UR - http://www.scopus.com/inward/record.url?scp=21944447908&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=21944447908&partnerID=8YFLogxK

U2 - 10.1086/310922

DO - 10.1086/310922

M3 - Article

AN - SCOPUS:21944447908

SN - 0004-637X

VL - 488

SP - L137-L140

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART II

ER -