Polarizability of the Hydrogen Molecule

Kol, W.; Wolniewicz, L.

doi:10.1063/1.1840870

Cited by 504 publications

(93 citation statements)

References 18 publications

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“…From the spacing of 0.27 cm -1 , we estimate the crystal field parameter DB 0 to be 0.45 cm -1 for solid orthodeuterium is the isotropic polarizability of J = 0 hydrogen molecule in the v = n vibrational state, and R is the distance between two molecules. By referring to the theoretically calculated polarizabilities [25], the ratio D D B B 0 0 2 2 D H is calculated to be around 0.9, which is in good agreement with the observed value of 0.85. Since no further splitting is observed in each component of the doublet, we conclude that the ground state crystal field splitting d 1 of solid orthodeuterium is less than the width; that is, 0.01 cm -1 .…”

Section: Q 2 (0) Transition Of Solid Orthodeuteriumsupporting

confidence: 71%

Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy

Katsuki

Fushitani

Momose

2003

Low Temperature Physics

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Pure vibrational overtone transitions of solid parahydrogen were studied using high-resolution laser spectroscopy. Extremely narrow spectral linewidth (~20 MHz) allowed us to observe rich spectral structure that originates in subtle intermolecular interactions in the crystal. It was found that anisotropy of the distribution of zero-point lattice vibration of hydrogen molecules perturbs the energy levels of the vibrationally excited states significantly. Large amplitude of the zero-point lattice vibration being an intrinsic nature of quantum solids, was directly observed from the present high-resolution spectroscopy. The first observation of a pure vibrational overtone transition of solid orthodeuterium is also discussed.

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Section: Q 2 (0) Transition Of Solid Orthodeuteriumsupporting

confidence: 71%

Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy

Katsuki

Fushitani

Momose

2003

Low Temperature Physics

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“…The first and simplest diatomic is hydrogen, which has been theoretically much studied for over the past 40 years due to its importance in Raman spectroscopy. 20 As further illustrative diatomics, also simple by today's standards, we have considered nitrogen (N 2 ) and carbon monoxide (CO). They are special in that N 2 offers the strongest bond in nature, besides being the largest component of Earth's atmosphere.…”

Section: E(f) ) E(0) -µFmentioning

confidence: 99%

Extrapolating to the One-Electron Basis Set Limit in Polarizability Calculations

Junqueira

Varandas

2008

J. Phys. Chem. A

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We report calculations of polarizabilities using total energies extrapolated to the complete basis set limit. A dual-level scheme has been employed, with the complete basis set limit of the correlation energy determined by the recently reported uniform singlet-and triplet-pair extrapolation method. The finite field approach has been employed, with tensors and averaged polarizabilities for the ground electronic states of H 2 , N 2 , CO, and H 2 O reported and compared with available experimental data in the literature. Exploratory results are also presented for C 6 H 4 NO 2 NH 2 .

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“…The values of (r 2 ) were calculated iisiri the Cniilnmh aτnrnγimιfίοη where neff denotes the efTective quantum number for a given (upper or lower) state. In our calculations for H2 and D2 we used the theoretical values of polarizabilities αΗ = 0.8045 χ 10-24 cm3 and αD2 = 0.794 x 10-24 cm3 calculated by Kolos and Wolniewicz [23]. The values of the C6 constants obtained in this way are listed in Table II.…”

Section: Resultsmentioning

confidence: 99%

Pressure Broadening and Shift of the 326.1 nm Cd Line Perturbed by H₂and D₂

et al. 2000

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The experimental values of pressure broadening and shift coemcients of the 114 Cd 326.1 nm line perturbed by Η2 and D2 are determined using a LIF technique and compared with theoretical values calculated from the impact theory.PACS numbers: 32.70. -n, 33.70.-w, 34.20.-b 1. Introduction In a series of experiments in our laboratory [1][2][3][4][5] the pressure broadening and shift of the 114Cd 326.1 nm (51S0-53Ρ1) intercombination line perturbed by He, Ne, Ar, Kr, and Xe have been studied using a pressure-scanned Fabry-Perot interferometer. As a sequel to the previous papers this paper reports results of measurements of the pressure broadening and shift of this line caused by the simplest molecular perturbers such as H2 and D2. There are only a few papers in the literature dealing with collisional effects on the 326.1 nm Cd line perturbed by molecular gases but they have rather a qualitative character [6][7][8]. The study of the pressure broadening and shift of the 326.1 nm Cd line by various molecular gases is of interest as it can provide information on the interaction between the ground-state perturbing molecules and the excited (53Ρ1) Cd-atom. The main goal of this work is to establish magnitudes of the broadening and shift coemcients of the 326.1 nm Cd line perturbed by Η2 and D2 at low perturbing gas pressures, i.e. in the linear region where two-body interactions predominate and the impact approxiiiiation of the collisional broadening theory is fully applicable.Due to the known high quenching rate for the Cd-H 2 and Cd-D2 systems [9][10][11], present measurements were performed with a laser induced fluorescence (LIF) technique.

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Polarizability of the Hydrogen Molecule

Cited by 504 publications

References 18 publications

Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy

Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy

Extrapolating to the One-Electron Basis Set Limit in Polarizability Calculations

Pressure Broadening and Shift of the 326.1 nm Cd Line Perturbed by H₂and D₂

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Polarizability of the Hydrogen Molecule

Cited by 504 publications

References 18 publications

Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy

Quantum property of solid hydrogen as revealed by high-resolution laser spectroscopy

Extrapolating to the One-Electron Basis Set Limit in Polarizability Calculations

Pressure Broadening and Shift of the 326.1 nm Cd Line Perturbed by H2and D2

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Pressure Broadening and Shift of the 326.1 nm Cd Line Perturbed by H₂and D₂