Thermal expansion of α-nitrogen ice in terahertz spectroscopy
| Autor: | Bagvanth Reddy Sangala, K. Guda |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Phonon Terahertz radiation General Physics and Astronomy chemistry.chemical_element 01 natural sciences Molecular physics Nitrogen Thermal expansion Terahertz spectroscopy and technology 010309 optics chemistry Lattice (order) 0103 physical sciences Intermolecular potential |
| Zdroj: | Indian Journal of Physics. 92:1385-1388 |
| ISSN: | 0974-9845 0973-1458 |
| DOI: | 10.1007/s12648-018-1238-9 |
| Popis: | The volumetric thermal expansion coefficient of α-nitrogen (N2) ice is calculated for temperatures between 10 and 25 K using its terahertz transmission data and a phonon model. The observed dip in terahertz transmission around 1.45 THz is modeled as phonon absorption based on an intermolecular potential which is sum of the Lennard-Jones potential and quadrupole–quadrupole interaction term. Using this model and our experimental data, the lattice parameters of α-N2 ice were obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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