Scientific Results

Absolute measurement of the S(0) and S(1) lines in the electric quadrupole fundamental band of D-2 around 3 mu m

Year: 2010

Authors: Maddaloni P., Malara P., De Tommasi E., De Rosa M., Ricciardi I., Gagliardi G., Tamassia F., Di Lonardo G., De Natale P.

Autors Affiliation: Istituto Nazionale di Ottica (INO)-Consiglio Nazionale Delle Ricerche (CNR), Comprensorio “A. Olivetti,” Via Campi Flegrei, Pozzuoli, Napoli 34-80078, Italy;
Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale del Risorgimento, Bologna 4-40136, Italy

Abstract: The electric quadrupole fundamental (v = 1←0) band of molecular deuterium around 3 μm is accessed by cavity ring-down spectroscopy using a difference-frequency-generation source linked to the Cs-clock primary standard via an optical frequency comb synthesizer. An absolute determination of the line position and strength is reported for the first two transitions (J = 2←0 and J = 3←1) of the S branch. An accuracy of 6×10−8 is achieved for the line-center frequencies, which improves by a factor 20 previous experimental results [ A. R. W. McKellar and T. Oka, Can. J. Phys. 56, 1315 (1978) ]. The line strength values, measured with 1% accuracy, are used to retrieve the quadrupole moment matrix elements which are found in good agreement with previous theoretical calculations [ A. Birnbaum and J. D. Poll, J. Atmos. Sci. 26, 943 (1969) ; J. L. Hunt, J. D. Poll, and L. Wolniewicz, Can. J. Phys. 62, 1719 (1984) ]

Journal/Review: JOURNAL OF CHEMICAL PHYSICS

Volume: 133 (15)      Pages from: 154317  to: 154317

KeyWords: Absolute measurements; Birnbaum; Cavity ring-down spectroscopy; Center frequency; Difference frequency; Electric quadrupoles; Fundamental bands; Line positions; Line strength; Matrix elements; Optical frequency combs; Primary standards; Quadrupole moments; Theoretical calculations, Cesium; Deuterium, Surveys
DOI: 10.1063/1.3493393

Citations: 24
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