The pure rotational spectrum of KH (X1Σ+): Quadrupole coupling in alkali hydrides

M. A. Brewster, Lucy M Ziurys

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The pure rotational spectrum of KH (X1Σ+) has been recorded using millimeter/submillimeter direct absorption techniques. The species was created by the reaction of potassium vapor and H2 in a d.c. discharge. The J = 0 → 1 and 1 → 2 transitions were measured near 202 and 404 GHz, and electric quadrupole splittings were resolved in the J = 0 → 1 line and partly resolved in the other transition. For comparison, the quadrupole structure in the J = 0 → 1 transition of NaH (X1Σ+) was also recorded. Very accurate rotational and quadrupole hyperfine constants were determined for KH, and eqQ was established for NaH as well. Diatomic hydride species are the building blocks for interstellar chemistry in both dense and diffuse gas. Knowledge of the rest frequencies of KH will enable its detection in such objects.

Original languageEnglish (US)
Pages (from-to)1190-1193
Number of pages4
JournalAstrophysical Journal
Volume559
Issue number2 PART 1
DOIs
StatePublished - Oct 1 2001

Fingerprint

rotational spectra
hydrides
alkalies
quadrupoles
interstellar chemistry
potassium
gas
vapors
gases
comparison
detection

Keywords

  • ISM: molecules
  • Line: identification
  • Methods: laboratory
  • Molecular data

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

The pure rotational spectrum of KH (X1Σ+) : Quadrupole coupling in alkali hydrides. / Brewster, M. A.; Ziurys, Lucy M.

In: Astrophysical Journal, Vol. 559, No. 2 PART 1, 01.10.2001, p. 1190-1193.

Research output: Contribution to journalArticle

@article{6cd8cc5fd91e488980287857785d55d5,
title = "The pure rotational spectrum of KH (X1Σ+): Quadrupole coupling in alkali hydrides",
abstract = "The pure rotational spectrum of KH (X1Σ+) has been recorded using millimeter/submillimeter direct absorption techniques. The species was created by the reaction of potassium vapor and H2 in a d.c. discharge. The J = 0 → 1 and 1 → 2 transitions were measured near 202 and 404 GHz, and electric quadrupole splittings were resolved in the J = 0 → 1 line and partly resolved in the other transition. For comparison, the quadrupole structure in the J = 0 → 1 transition of NaH (X1Σ+) was also recorded. Very accurate rotational and quadrupole hyperfine constants were determined for KH, and eqQ was established for NaH as well. Diatomic hydride species are the building blocks for interstellar chemistry in both dense and diffuse gas. Knowledge of the rest frequencies of KH will enable its detection in such objects.",
keywords = "ISM: molecules, Line: identification, Methods: laboratory, Molecular data",
author = "Brewster, {M. A.} and Ziurys, {Lucy M}",
year = "2001",
month = "10",
day = "1",
doi = "10.1086/322388",
language = "English (US)",
volume = "559",
pages = "1190--1193",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2 PART 1",

}

TY - JOUR

T1 - The pure rotational spectrum of KH (X1Σ+)

T2 - Quadrupole coupling in alkali hydrides

AU - Brewster, M. A.

AU - Ziurys, Lucy M

PY - 2001/10/1

Y1 - 2001/10/1

N2 - The pure rotational spectrum of KH (X1Σ+) has been recorded using millimeter/submillimeter direct absorption techniques. The species was created by the reaction of potassium vapor and H2 in a d.c. discharge. The J = 0 → 1 and 1 → 2 transitions were measured near 202 and 404 GHz, and electric quadrupole splittings were resolved in the J = 0 → 1 line and partly resolved in the other transition. For comparison, the quadrupole structure in the J = 0 → 1 transition of NaH (X1Σ+) was also recorded. Very accurate rotational and quadrupole hyperfine constants were determined for KH, and eqQ was established for NaH as well. Diatomic hydride species are the building blocks for interstellar chemistry in both dense and diffuse gas. Knowledge of the rest frequencies of KH will enable its detection in such objects.

AB - The pure rotational spectrum of KH (X1Σ+) has been recorded using millimeter/submillimeter direct absorption techniques. The species was created by the reaction of potassium vapor and H2 in a d.c. discharge. The J = 0 → 1 and 1 → 2 transitions were measured near 202 and 404 GHz, and electric quadrupole splittings were resolved in the J = 0 → 1 line and partly resolved in the other transition. For comparison, the quadrupole structure in the J = 0 → 1 transition of NaH (X1Σ+) was also recorded. Very accurate rotational and quadrupole hyperfine constants were determined for KH, and eqQ was established for NaH as well. Diatomic hydride species are the building blocks for interstellar chemistry in both dense and diffuse gas. Knowledge of the rest frequencies of KH will enable its detection in such objects.

KW - ISM: molecules

KW - Line: identification

KW - Methods: laboratory

KW - Molecular data

UR - http://www.scopus.com/inward/record.url?scp=0035485973&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035485973&partnerID=8YFLogxK

U2 - 10.1086/322388

DO - 10.1086/322388

M3 - Article

AN - SCOPUS:0035485973

VL - 559

SP - 1190

EP - 1193

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2 PART 1

ER -