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相关论文: Anti-bubble effect of temperature \& deformation: …

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The impact of temperature-induced deformations and shape fluctuations on the particle stability and decay processes has been investigated across the isotopes of hot nuclear systems with $Z = 28$ to $50$, with focus on astrophysically…

核理论 · 物理学 2026-03-09 Mamta Aggarwal , Pranali Parab , G. Saxena

The thermal evolution of the shell correction energy is investigated for deformed nuclei using Strutinsky prescription in a self-consistent relativistic mean-field framework. For temperature independent single-particle states corresponding…

核理论 · 物理学 2009-11-07 B. K. Agrawal , Tapas Sil , S. K. Samaddar , J. N. De

We demonstrate that hot superheavy nuclei do not retain spherical shapes, as traditionally assumed, but instead equilibrate in deformed, often oblate or triaxial, configurations at finite excitation energy. This behavior arises from a…

The relativistic Hartree-BCS theory is applied to study the temperature dependence of nuclear shape and pairing gap for $^{166}Er$ and $^{170}Er$. For both the nuclei, we find that as temperature increases the pairing gap vanishes leading…

核理论 · 物理学 2009-11-06 B. K. Agrawal , Tapas Sil , J. N. De , S. K. Samaddar

We investigate the effect of temperature on $\alpha$-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…

核理论 · 物理学 2025-06-03 M. Davies , E. Yüksel , J. -P. Ebran , E. Khan , P. Stevenson

A systematic study of the central depletion of proton density has been performed in the isotonic chains of nuclei with neutron numbers $N = 20$ and $28$ using different variants of the relativistic mean-field (RMF) models. These models…

核理论 · 物理学 2019-05-22 G. Saxena , M. Kumawat , B. K. Agrawal , Mamta Aggarwal

The existence of bubble nuclei identified by the central depletion in nucleonic density is studied for the conventional magic N (Z) $=$ 8, 20, 28, 40, 50, 82, 126 isotones (isotopes) and recently speculated magic N $=$ 164, 184, 228…

核理论 · 物理学 2018-12-26 G. Saxena , M. Kumawat , M. Kaushik , S. K. Jain , Mamta Aggarwal

Deformation, a key concept in our understanding of heavy nuclei, is based on a mean-field description that breaks the rotational invariance of the nuclear many-body Hamiltonian. We present a method to analyze nuclear deformations at finite…

核理论 · 物理学 2015-01-07 Y. Alhassid , C. N. Gilbreth , G. F. Bertsch

The shape evolutions of the pear-shaped nuclei $^{224}$Ra and even-even $^{144-154}$Ba with temperature are investigated by the finite-temperature relativistic mean field theory with the treatment of pairing correlations by the BCS…

核理论 · 物理学 2017-11-15 Wei Zhang , Yi Fei Niu

The behavior of several nuclear properties with temperature is analyzed within the framework of the Finite Temperature Hartree-Fock-Bogoliubov (FTHFB) theory with the Gogny force and large configuration spaces. Thermal shape fluctuations in…

核理论 · 物理学 2014-11-18 V. Martin , J. L. Egido , L. M. Robledo

We study the important for the experiment features of the effect of the electron shell on alpha decay in the adiabatic approach. The effect is of tenths of a percent or less in magnitude, depending on the transition energy and the atomic…

核理论 · 物理学 2015-06-15 Feodor F. Karpeshin , Malvina B. Trzhaskovskaya

Calculations for electron capture rates on nuclei with atomic numbers between $Z=20$ and $Z=52$ are performed in a self-consistent finite-temperature covariant energy density functional theory within the relativistic quasiparticle…

核理论 · 物理学 2025-08-19 A. Ravlić , S. Giraud , N. Paar , R. G. T. Zegers

One of the key observables in a gravitational wave power spectrum from a first order phase transition in the early Universe is the mean bubble spacing, which depends on the rate of nucleation of bubbles of the stable phase, as well as the…

广义相对论与量子宇宙学 · 物理学 2022-05-10 Mudhahir Al Ajmi , Mark Hindmarsh

The previous mean-field calculation [Myaing Thi Win and K. Hagino, Phys. Rev. C{\bf 78}, 054311 (2008)] has shown that the oblate deformation in $^{28,30,32}$Si disappears when a $\Lambda$ particle is added to these nuclei. We here…

核理论 · 物理学 2018-07-04 H. Mei , K. Hagino , J. M. Yao , T. Motoba

We examine the effect of nuclear deformation on the calculated $\beta$-decay half-lives of 55 neutron-rich nuclei. The deformation values were computed using DD-PC1 and DD-ME2 interactions in the Relativistic Hartree-Bogoliubov model. Yet…

核理论 · 物理学 2024-07-29 Jameel-Un Nabi , Tuncay Bayram , Wajeeha Khalid , Arslan Mehmood , Alper Köseoğlu

Temperature and angular momentum dependence of the quadrupole deformation is studied in the middle of the sd-shell for 28Si and 27Si isotopes using the spherical shell model approach. The shell model calculations have been performed using…

核理论 · 物理学 2010-11-02 P. A. Ganai , J. A. Sheikh , I. Maqbool , R. P. Singh

The rich phenomena of deformations in neutron-deficient krypton isotopes such as the shape evolution with neutron number and the shape coexistence attract the interests of nuclear physicists for decades. It will be interesting to study such…

核理论 · 物理学 2017-07-28 Wei Zhang , Yifei Niu

We investigate nuclear matter at finite temperature and density, including the formation of light clusters up to the alpha particle The novel feature of this work is to include the formation of clusters as well as their dissolution due to…

核理论 · 物理学 2010-04-06 S. Typel , G. Röpke , T. Klähn , D. Blaschke , H. H. Wolter

Understanding the nucleation and growth dynamics of the surface bubbles generated on a heated surface can benefit a wide range of modern technologies, such as the cooling systems of electronics, refrigeration cycles, nuclear reactors and…

A systematic study of the temperature dependence of the shapes and pairing gaps of some isotopes in the rare-earth region is made in the relativistic Hartree-BCS theory. Thermal response to these nuclei is always found to lead to a phase…

核理论 · 物理学 2009-11-06 B. K. Agrawal , Tapas Sil , S. K. Samaddar , J. N. De
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