Frequency measurement of pure rotational transitions in the v2= 1 state of H2O

Rotationally resolved infrared spectroscopy of adamantane

“…36 The line frequency accuracy depends on the spectral region studied and on the signal to noise ratio of the band studied; however, for reasons of conformity, we adopt a fixed experimental uncertainty of 0.0002 cm −1 over the full IR range, which is a reasonable compromise for all bands.…”

The H216O molecule: Line position and line intensity analyses up to the second triad

“…In the first of these papers [1], measurements were carried out at room temperature in the infrared domain (IR) in order to obtain accurate line positions and line strengths for transitions involving vibrational states of the second triad. In the second of these papers [2], measurement of the frequencies of a large number of microwave lines within the (010) vibrational state were carried out. In the last of these papers [3], the absorption spectra of water was recorded using CW-cavity ring down spectroscopy in order to obtain intensities for weak transitions lying in the 5911-6122 and 6745-7016 cm À1 regions.…”

“…In the last of these papers [3], the absorption spectra of water was recorded using CW-cavity ring down spectroscopy in order to obtain intensities for weak transitions lying in the 5911-6122 and 6745-7016 cm À1 regions. Although, the number of new transitions available is larger than one thousand, no global analysis of these data [1][2][3] has been performed yet.…”

“…The results of the line position analysis of a large body of data consisting of rotational energies [4][5][6], line positions [1,5,[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] and microwave frequencies [2,[24][25][26][27][28][29][30][31][32][33][34][35][36] are also reported along with similar results concerning a line strength analysis in which the new data measured in this work are included along with already available data [1,3,11,12,21,37]. Both data sets involve the eight first vibrational states and both analyses were performed using a slightly modified version of the bending-rotation Hamiltonian approach [38,4].…”

Frequency measurement of pure rotational transitions of D2O using tunable terahertz spectrometer

“…Other than D 2 O, we measured frequencies of pure rotational transitions of H 16 2 O (v=0 and v 2 =1 vibrational states), H 17 2 O, and H 18 2 O in the frequency range from 0.5 to 5 THz [1][2][3][4].…”