R_{0}(0) transition in the absorption spectrum of solid hydrogen deuteride (HD)

1988 ◽  
Vol 37 (4) ◽  
pp. 2357-2359 ◽  
Author(s):  
Sang Lee ◽  
Sung-Ik Lee ◽  
James Gaines ◽  
R. Tipping ◽  
J. Poll
Keyword(s):  
Absorption Spectrum ◽  
Solid Hydrogen ◽  
Hydrogen Deuteride

Raman spectrum of solid hydrogen deuteride

1993 ◽  
Vol 47 (22) ◽  
pp. 14886-14897 ◽  
Author(s):  
J. J. Miller ◽  
R. L. Brooks ◽  
J. L. Hunt
Keyword(s):  
Raman Spectrum ◽  
Solid Hydrogen ◽  
Hydrogen Deuteride

THEORY OF THE PHONON BRANCHES IN THE INFRARED SPECTRUM OF SOLID HYDROGEN

1962 ◽  
Vol 40 (2) ◽  
pp. 163-178 ◽  
Author(s):  
J. D. Poll ◽  
J. Van Kranendonk
Keyword(s):  
Experimental Data ◽  
Absorption Spectrum ◽  
Infrared Absorption Spectrum ◽  
Solid Hydrogen ◽  
General Criterion ◽  
Lattice Vibrations ◽  
Mean Square ◽  
The Mean ◽  
Integrated Intensities ◽  
Absorption Features

The effect of the lattice vibrations on the infrared absorption spectrum of solid hydrogen is investigated theoretically. General expressions are derived for the integrated intensities of the phonon branches in the rotational and vibrational spectrum of solid parahydrogen. It is shown that the intensities of the pure rotational and vibrational absorption features are not appreciably affected by the lattice vibrations. A general criterion is derived for the vanishing of the contribution of instantaneous phonon processes to the integrated intensities of the phonon branches. The integrated intensities are expressed in terms of the mean square displacements of the molecules from their equilibrium positions. Explicit calculations are presented, based on the Einstein and Debye models for the lattice vibrations, and the results are compared with the available experimental data.

Charge-induced absorption in proton-beam-irradiated solid hydrogen deuteride

1988 ◽  
Vol 66 (11) ◽  
pp. 1025-1030 ◽  
Author(s):  
J. J. Miller ◽  
R. L. Brooks ◽  
J. L. Hunt ◽  
J. D. Poll
Keyword(s):  
Solid Hydrogen ◽  
Cluster Ions ◽  
Hydrogen Impurity ◽  
Hydrogen Deuteride ◽  
Electron Bubbles ◽  
Induced Absorption ◽  
The Third ◽  
Doublet Structure ◽  
Third Line ◽  
Mev Protons

The charge-induced absorption spectrum in the fundamental band of solid hydrogen deuteride irradiated by a beam of 15 MeV protons has been observed. Four charge-induced absorption lines were seen, including one due to a small hydrogen impurity in the sample. Two of the three HD lines are caused by electron bubbles in the solid. These lines have been named Q1(0)− and S1(0)−, indicating the parent transition and the sign of the perturbing charge. Under higher resolution, the third line, named Q1(0)+, shows a doublet structure. The possibility that this doublet structure is caused by [Formula: see text] cluster ions is examined. A comparison of the timing and temperature dependence of the charge-induced lines in HD is made with previous results in D2.

THE INDUCED INFRARED ABSORPTION SPECTRUM OF SOLID DEUTERIUM AND SOLID HYDROGEN DEUTERIDE

1966 ◽  
Vol 44 (2) ◽  
pp. 373-398 ◽  
Author(s):  
A. Crane ◽  
H. P. Gush
Keyword(s):  
Absorption Spectrum ◽  
Infrared Absorption Spectrum ◽  
Translational Motion ◽  
Single Molecules ◽  
Absorption Bands ◽  
Hydrogen Deuteride ◽  
Phonon Branch ◽  
Solid Mixture ◽  
Solid Deuterium ◽  
Wave Numbers

The fundamental absorption bands of deuterium and hydrogen deuteride have been observed in the solid at a temperature of 1.9 °K. Features are observed that correspond to rotation–vibration transitions in single molecules, in pairs of molecules, and to molecular transitions accompanied by the creation of phonons. Several features were observed in the HD spectrum that arise from the fact that HD is heteronuclear; one of these was a sharp absorption line due to ΔJ = 1 transitions in single molecules. In addition, an unusual split-phonon branch was observed with a minimum of zero absorption a few wave numbers below the frequency of the ΔJ = 1 transition. This split-phonon feature is apparently a result of strong interaction between the rotation of the molecule and its translational motion in the lattice. The spectrum of a solid mixture of 10% HD and 90% H2 was also studied. The phonon branch accompanying the Q1(0) line of HD and the phonon branch accompanying the Q1(0) line of H2 observed in the same crystal have a very different shape, the former exhibiting a distinct minimum as for pure HD.

On the infrared spectrum of solid hydrogen deuteride

1990 ◽  
Vol 68 (4-5) ◽  
pp. 422-427 ◽  
Author(s):  
A. R. W. McKellar ◽  
M. J. Clouter
Keyword(s):  
Nearest Neighbor ◽  
Far Infrared ◽  
Solid Hydrogen ◽  
High Spectral Resolution ◽  
Fourier Transform Spectrometer ◽  
Hydrogen Deuteride ◽  
Mid Infrared ◽  
Integrated Intensity ◽  
Recent Theoretical Calculation ◽  
Good Agreement

The spectrum of solid hydrogen deuteride has been studied in the far-infrared (80–200 cm−1) and mid-infrared (3600–4500 cm−1) regions using a Fourier transform spectrometer and a moderately high spectral resolution of 0.09 cm−1. Spectra of the liquid were also recorded for comparison purposes. The pure rotational R0(0) transition at 88 cm−1 was found to have an integrated intensity of 1.78 ± 0.10 cm−2, in good agreement with a recent theoretical prediction. The shape of R0(0) appears to be best represented as the sum of two near-Lorentzian components. These may be related to the presence or absence of nearest neighbor H2 or D2 impurities in the crystal. The fundamental band in the mid-infrared is more complicated, and its detailed shape is not completely understood at this time. The profile of the band in the 3710 cm−1 region of the R1(0) transition is compared with a recent theoretical calculation. The presence of numerous sharp lines due to Q1(1) transitions in impurity H2 molecules around 4150 cm−1 is also noted.

Interference effects in the spectrum of HD: VI: HD–HD, and HD–Kr at room temperature

1994 ◽  
Vol 72 (5-6) ◽  
pp. 215-224 ◽  
Author(s):  
A. R. W. McKellar
Keyword(s):  
Absorption Spectrum ◽  
Fourier Transform ◽  
High Resolution ◽  
Room Temperature ◽  
Dipole Transition ◽  
Interference Effects ◽  
Hydrogen Deuteride ◽  
Interference Phenomenon ◽  
Infrared Spectrometer ◽  
Line Positions

The absorption spectrum of the fundamental band of hydrogen deuteride (λ ≈ 2.7 μm) has been studied in pure HD and in mixtures with krypton at moderate densities (1–45 amagat) and room temperature, using a high-resolution Fourier transform infrared spectrometer. The effects that arise from interference between the allowed dipole transition moments of free HD and the dipoles induced during collisions were studied. For HD–HD collisions, the eight transitions from P1(3) to R1(4) were analyzed to determine line positions, intensities, shift and broadening coefficients, and the phase shift parameters that govern the interference effects. Thus the interference phenomenon was studied over a wider range of initial- and final-J values than previously possible, and the systematic dependence of the phase shifts on transition was determined. For HD–Kr collisions, the R1(0) and R1(1) transitions were examined in detail. The spectrum in the region of R1(1) exhibited a realtively broad underlying "plateau" feature that was shown to be due to the presence of impurity CF4 molecules in the Kr sample.

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