Abstract
We calculate the rate of the spontaneous magnetic dipole radiation transitions from ortho-to para-states of the hydrogen molecule at room temperature with radiation wavelengths of about 0.01-0.1 cm. Exponentially small differences between the rotational energies and heat capacities of parahydrogen, orthohydrogen molecules and diatomic molecules consisting of different hydrogen atoms for high temperatures are derived.
| Original language | English |
|---|---|
| Article number | 235401 |
| Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
| Volume | 51 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 13 Nov 2018 |
Keywords
- magnetic dipole transitions
- orthohydrogen molecule
- parahydrogen molecule
- partition function
- spin flip
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
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Ishkhanyan, A. M., & Krainov, V. P. (2018). Low-frequency electromagnetic radiation of hydrogen molecular gas: Effect of the ortho-para conversion. Journal of Physics B: Atomic, Molecular and Optical Physics, 51(23), [235401]. https://doi.org/10.1088/1361-6455/aae6ee