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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.16428 |
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| _version_ | 1866910539027841024 |
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| author | Prášek, A. Alexa, P. Bonatsos, D. Thiamová, G. Petrellis, D. Veselý, P. |
| author_facet | Prášek, A. Alexa, P. Bonatsos, D. Thiamová, G. Petrellis, D. Veselý, P. |
| contents | In this paper we focus on three mass regions where first-order phase transitions occur, namely for $N=40$, 60 and 90. We investigate four isotopic chains (Se, Zr, Mo and Nd) in the framework of microscopic Skyrme-Hartree-Fock + Bardeen-Cooper-Schrieffer calculations for 15 different parametrizations. The microscopic calculations show the typical behavior expected for first-order phase transitions. To find the best candidate for the critical point phase transition we propose new microscopic position and occupation indices calculated for positive-parity and negative-parity proton and neutron single-quasiparticle states around the Fermi level. The microscopic calculations are completed by macroscopic calculations within the Algebraic Collective Model (ACM), and compared to the experimental data for $^{74}$Se, $^{102}$Mo and $^{150}$Nd, considered to be the best candidates for the critical point nuclei. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_16428 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Phase transitions in N = 40, 60 and 90 nuclei Prášek, A. Alexa, P. Bonatsos, D. Thiamová, G. Petrellis, D. Veselý, P. Nuclear Theory In this paper we focus on three mass regions where first-order phase transitions occur, namely for $N=40$, 60 and 90. We investigate four isotopic chains (Se, Zr, Mo and Nd) in the framework of microscopic Skyrme-Hartree-Fock + Bardeen-Cooper-Schrieffer calculations for 15 different parametrizations. The microscopic calculations show the typical behavior expected for first-order phase transitions. To find the best candidate for the critical point phase transition we propose new microscopic position and occupation indices calculated for positive-parity and negative-parity proton and neutron single-quasiparticle states around the Fermi level. The microscopic calculations are completed by macroscopic calculations within the Algebraic Collective Model (ACM), and compared to the experimental data for $^{74}$Se, $^{102}$Mo and $^{150}$Nd, considered to be the best candidates for the critical point nuclei. |
| title | Phase transitions in N = 40, 60 and 90 nuclei |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2407.16428 |