The $α$-particle condensation in diluted $^{16}\text{O}$ at finite temperature
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908389150294016 |
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| author | Davies, M. Yüksel, E. Ebran, J. -P. Khan, E. Stevenson, P. |
| author_facet | Davies, M. Yüksel, E. Ebran, J. -P. Khan, E. Stevenson, P. |
| contents | We investigate the effect of temperature on $α$-particle clustering in the diluted nucleus $^{16}\text{O}$ using the multi-constrained finite-temperature relativistic Hartree-Bogoliubov model with the DD-ME2 interaction. At a critical density the nucleus undergoes a Mott-like transition from a homogeneous to a localised configuration characterised by $α$-particle clustering and the emergence of a finite non-axial octupole deformation. We study the interplay between the onset of localisation under nuclear dilution and the suppression of deformation and $α$-particle clustering due to increasing temperature. Investigating the temperature-density plane, our findings indicate that temperature delays the formation of non-axial octupole deformation and $α$-particle clustering in dilute environments. Following the transition from homogeneous to clustered configurations, the non-axial octupole deformation continues to increase with further dilution of the system and becomes nearly independent of temperature. We found that $α$-particle clusters appear at temperatures up to $T = 4.10$ MeV and at a corresponding normalised density $ρ_{\text{Mott}}/ρ_0 \approx 0.09$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_01604 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The $α$-particle condensation in diluted $^{16}\text{O}$ at finite temperature Davies, M. Yüksel, E. Ebran, J. -P. Khan, E. Stevenson, P. Nuclear Theory We investigate the effect of temperature on $α$-particle clustering in the diluted nucleus $^{16}\text{O}$ using the multi-constrained finite-temperature relativistic Hartree-Bogoliubov model with the DD-ME2 interaction. At a critical density the nucleus undergoes a Mott-like transition from a homogeneous to a localised configuration characterised by $α$-particle clustering and the emergence of a finite non-axial octupole deformation. We study the interplay between the onset of localisation under nuclear dilution and the suppression of deformation and $α$-particle clustering due to increasing temperature. Investigating the temperature-density plane, our findings indicate that temperature delays the formation of non-axial octupole deformation and $α$-particle clustering in dilute environments. Following the transition from homogeneous to clustered configurations, the non-axial octupole deformation continues to increase with further dilution of the system and becomes nearly independent of temperature. We found that $α$-particle clusters appear at temperatures up to $T = 4.10$ MeV and at a corresponding normalised density $ρ_{\text{Mott}}/ρ_0 \approx 0.09$. |
| title | The $α$-particle condensation in diluted $^{16}\text{O}$ at finite temperature |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2503.01604 |