Experimental observation of quantum interferences in CO-H$_2$ rotational energy transfer at room temperature
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914378954047488 |
|---|---|
| author | Labiad, Hamza Faure, Alexandre Sims, Ian R. |
| author_facet | Labiad, Hamza Faure, Alexandre Sims, Ian R. |
| contents | Using time-resolved infrared-vacuum-ultraviolet double-resonance spectroscopy, experimental room temperature measurements of state-to-state rate coefficients for rotational energy transfer within the X $^1Σ^+(v=2)$ vibrational state of CO due to H$_2$ collisions have been compared to accurate 4-D close-coupling quantum calculations. Theoretically predicted quantum interferences in the CO-H$_2$ collisional system are experimentally observed at room temperature, and excellent agreement between theory and experiment is observed. These results provide a valuable benchmark for validating the anisotropic part of the potential energy surface, thereby supporting the theoretical modeling of CO emission in warm astrophysical environments such as photodissociation regions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_04403 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Experimental observation of quantum interferences in CO-H$_2$ rotational energy transfer at room temperature Labiad, Hamza Faure, Alexandre Sims, Ian R. Quantum Physics Atomic and Molecular Clusters Using time-resolved infrared-vacuum-ultraviolet double-resonance spectroscopy, experimental room temperature measurements of state-to-state rate coefficients for rotational energy transfer within the X $^1Σ^+(v=2)$ vibrational state of CO due to H$_2$ collisions have been compared to accurate 4-D close-coupling quantum calculations. Theoretically predicted quantum interferences in the CO-H$_2$ collisional system are experimentally observed at room temperature, and excellent agreement between theory and experiment is observed. These results provide a valuable benchmark for validating the anisotropic part of the potential energy surface, thereby supporting the theoretical modeling of CO emission in warm astrophysical environments such as photodissociation regions. |
| title | Experimental observation of quantum interferences in CO-H$_2$ rotational energy transfer at room temperature |
| topic | Quantum Physics Atomic and Molecular Clusters |
| url | https://arxiv.org/abs/2504.04403 |