ROTATIONAL SPECTROSCOPY OF THE CO-PARA-H2 MOLECULAR COMPLEX

被引：26

作者：

Potapov, A. V. ^{[1
,2
]}

Surin, L. A. ^{[1
,2
]}

Panfilov, V. A. ^{[2
]}

Dumesh, B. S. ^{[2
]}

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

Schlemmer, S. ^{[1
]}

Raston, P. L. ^{[3
]}

Jaeger, W. ^{[3
]}

机构：

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

[2] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia

[3] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada

来源：

ASTROPHYSICAL JOURNAL | 2009年 / 703卷 / 02期

基金：

加拿大自然科学与工程研究理事会; 俄罗斯基础研究基金会;

关键词：

ISM: molecules; molecular data; techniques: spectroscopic; WEAKLY-BOUND COMPLEX; DER-WAALS-COMPLEXES; RESOLUTION INFRARED-SPECTRUM; ENERGY-LEVELS; CO; MICROWAVE; HE; CO-ORTHOD(2); COLLISIONS; HYDROGEN;

D O I：

10.1088/0004-637X/703/2/2108

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The rotational spectrum of the CO-para-H-2 van der Waals complex, produced using a molecular jet expansion, was observed with two different techniques: OROTRON intracavity millimeter-wave spectroscopy and pulsed Fourier transform microwave spectroscopy. Thirteen transitions in the frequency range from 80 to 130 GHz and two transitions in the 14 GHz region were measured and assigned, allowing for a precise determination of the corresponding energy level positions of CO-para-H-2. The data obtained enable further radio astronomical searches for this molecular complex and provide a sensitive test of the currently best available intermolecular potential energy surface for the CO-H-2 system.

引用

页码：2108 / 2112

页数：5

共 23 条

[1] A search for the CO-H-2 dimer in the galaxy [J].

Allen, RJ ;

Loinard, L ;

McKellar, ARW ;

Lequeux, J .

ASTROPHYSICAL JOURNAL, 1997, 489 (01) :102-108

[2]

[Anonymous], 1978, Laser and Coherence Spectroscopy, DOI DOI 10.1007/978-1-4684-2352-5_2

[3] Two highly sensitive microwave cavity spectrometers [J].

Dumesh, BS ;

Surin, LA .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1996, 67 (10) :3458-3464

[4] ROTATIONAL EXCITATION OF CO BY COLLISIONS WITH HE, H, AND H2 UNDER CONDITIONS IN INTERSTELLAR CLOUDS [J].

GREEN, S ;

THADDEUS, P .

ASTROPHYSICAL JOURNAL, 1976, 205 (03) :766-785

[5] A new ab initio interaction energy surface and high-resolution spectra of the H2-CO van der Waals complex -: art. no. 104301 [J].

Jankowski, P ;

Szalewicz, K .

JOURNAL OF CHEMICAL PHYSICS, 2005, 123 (10)

[6] Ab initio potential energy surface and infrared spectra of H2-CO and D2-CO vanderWaals complexes [J].

Jankowski, P ;

Szalewicz, K .

JOURNAL OF CHEMICAL PHYSICS, 1998, 108 (09) :3554-3565

[7] Molecular complexes in close and far away [J].

Klemperer, William ;

Vaida, Veronica .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2006, 103 (28) :10584-10588

[8] Isotopic probing of very weak intermolecular forces:: Microwave and infrared spectra of CO-He isotopomers [J].

McKellar, ARW ;

Xu, YJ ;

Jäger, W ;

Bissonnette, C .

JOURNAL OF CHEMICAL PHYSICS, 1999, 110 (22) :10766-10773

[9] High-resolution infrared spectrum and energy levels of the weakly bound complex, CO-orthoD2 [J].

McKellar, ARW .

JOURNAL OF CHEMICAL PHYSICS, 2000, 112 (21) :9282-9288

[10] High-resolution infrared spectrum and energy levels of the weakly bound complex, CO-paraH2 [J].

McKellar, ARW .

JOURNAL OF CHEMICAL PHYSICS, 1998, 108 (05) :1811-1820

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