Millimeter-wave spectroscopy of titanium dioxide, TiO2

被引：16

作者：

Kania, P. ^{[1
]}

Hermanns, M. ^{[1
]}

Bruenken, S. ^{[1
]}

Mueller, H. S. P. ^{[1
]}

Giesen, T. F. ^{[1
]}

机构：

[1] Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany

来源：

JOURNAL OF MOLECULAR SPECTROSCOPY | 2011年 / 268卷 / 1-2期

关键词：

Titanium dioxide; Transition metal; Interstellar molecule; Millimeter-wave spectroscopy; MOLECULAR-SPECTROSCOPY; COLOGNE DATABASE; TRANSITION; SPECTRUM;

D O I：

10.1016/j.jms.2011.04.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The millimeter-wave rotational spectrum of TiO2 in its ground vibrational state has been recorded in the frequency range from 248 to 345 GHz using the Cologne Supersonic Jet Spectrometer for Terahertz Applications (SuJeSTA). Forty-two b-type rotational transitions of the main isotopologue (TiO2)-Ti-48 and five transitions of (TiO2)-Ti-46 in natural abundance have been measured up to J = 22 and K-a = 8 which corresponds to excitation temperatures of 170 K. TiO2 was formed by laser ablation and adiabatically cooled in a supersonic jet of helium to rotational temperatures of 20 K. The new transitions have been analyzed together with previously reported data obtained from Fourier-transform microwave spectroscopy in the frequency range from 7 to 42 GHz. The improved and extended set of spectroscopic parameters provides accurate transition frequencies for future astronomical searches in the millimeter-wave region. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：173 / 176

页数：4

共 20 条

[1] BAUSCHLICHER CW, 1995, THEOR CHIM ACTA, V92, P183
[2] The rotational spectrum of TiO2
Bruenken, S.
Mueller, H. S. P.
Menten, K. M.
McCarthy, M. C.
Thaddeus, P.
[J]. ASTROPHYSICAL JOURNAL, 2008, 676 (02) : 1367 - 1371
[3] CAMERON AGW, 1973, SPACE SCI REV, V15, P121, DOI 10.1007/BF00172440
[4] Sub-millimeter wave spectroscopy of the C3H radical: Ro-vibrational transitions from ground to the lowest bending state
Caris, M.
Giesen, T. F.
Duan, C.
Mueller, H. S. P.
Schlemmer, S.
Yamada, K. M. T.
[J]. JOURNAL OF MOLECULAR SPECTROSCOPY, 2009, 253 (02) : 99 - 105
[5] REACTIONS OF LASER-ABLATED TITANIUM, ZIRCONIUM, AND HAFNIUM ATOMS WITH OXYGEN MOLECULES IN CONDENSING ARGON
CHERTIHIN, GV
ANDREWS, L
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (17) : 6356 - 6366
[6] LEAST-SQUARES REFINEMENT OF VALENCE FORCE CONSTANTS WITHOUT USE OF MOLECULAR SYMMETRY
CHRISTEN, D
[J]. JOURNAL OF MOLECULAR STRUCTURE, 1978, 48 (01) : 101 - 106
[7] ISOTOPES OF TITANIUM IN COOL STARS
CLEGG, RES
LAMBERT, DL
BELL, RA
[J]. ASTROPHYSICAL JOURNAL, 1979, 234 (01) : 188 - 199
[8] DEVORE TC, 1983, HIGH TEMP SCI, V16, P269
[9] DEVORE TC, 1982, HIGH TEMP SCI, V15, P219
[10] Frisch M., 2004, GAUSSIAN 03 REVISION, DOI DOI 10.1016/J.MOLSTRUC.2017.03.014

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