Toroidal and spherical bubble nuclei

Wong, Cheuk-Yin

doi:10.1016/0003-4916(73)90420-x

Cited by 138 publications

(169 citation statements)

References 15 publications

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“…In 1967, Siemens and Bethe studied spherical bubble nuclei using a liquid drop model [5]. And later on, based on a liquid drop model (LDM) with shell correction energy, Wong studied known β-stable nuclei and found spherical bubbles [10]. Furthermore, Moretto et al showed that bubbles at finite temperature may be stabilized by the inner vapor pressure [13].…”

Section: Introductionmentioning

confidence: 99%

Hollow nuclear matter

Yong

2016

Phys. Rev. C

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It is generally considered that an atomic nucleus is always compact. Based on the isospindependent Boltzmann nuclear transport model, here I show that large block nuclear matter or excited nuclear matter may both be hollow. And the size of inner bubble in these matter is affected by the charge number of nuclear matter. Existence of hollow nuclear matter may have many implications in nuclear or atomic physics or astrophysics as well as some practical applications.

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Section: Introductionmentioning

confidence: 99%

Hollow nuclear matter

Yong

2016

Phys. Rev. C

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“…E.g., a region of relatively higher stability against spontaneous fission was obtained at Z = 164 and N = 318 in [8]. The properties of toroidal and spherical bubble nuclei were presented in [159]. Although speculative, the highly advanced experimental technology should be used also for some experiments to search for such really exotic phenomena in the accessible region of nuclei between Z = 126, N = 184 and Z = 190, N = 297.…”

Section: Discussionmentioning

confidence: 99%

Synthesis of superheavy elements by cold fusion

Hofmann¹

2011

Radiochimica Acta

120

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Summary.The new elements from Z = 107 to 112 were synthesized in cold fusion reactions based on targets of lead and bismuth. The principle physical concepts are presented which led to the application of this reaction type in search experiments for new elements. Described are the technical developments from early mechanical devices to experiments with recoil separators. An overview is given of present experiments which use cold fusion for systematic studies and synthesis of new isotopes. Perspectives are also presented for the application of cold fusion reactions in synthesis of elements beyond element 113, the so far heaviest element produced in a cold fusion reaction. Further, the transition of hot fusion to cold fusion is pointed out, which occurs in reactions for synthesis of elements near Z = 126 using actinide targets and beams of neutron rich isotopes of elements from iron to germanium.

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“…The values of J appearing are 20, 60, and 100, but only for J=60 the configuration remains stable for a very large number of iterations. The values occurring here can be understood quite simply from the radially displaced harmonic oscillator model [9]. In practice the wave functions can be approximated quite well as Gaussians in the distance from the central circle of the torus, and by azimuthal factors like exp(imφ).…”

Section: Torus Stabilization By Rotationmentioning

confidence: 99%

“…In the present study, search for the stable state using the equivalent cranked rme HF equation, δ Ĥ − ωĴ z = 0 [14, 15], by scana large range of ω. efore the HF calculations, we here discuss the shell cture of the torus configuration using the radial dised harmonic oscillator (RDHO) model [9]. For the s configuration, not only Ω but also the z component of orbital angular momentum, Λ, are good quantum num-(Ω = Λ + Σ, where Σ denotes the z component of the values, ±1/2).…”

Section: Torus Stabilization By Rotationmentioning

confidence: 99%

Exotic Cluster Structures in the Mean-Field Theory

Maruhn¹

2017

Fission and Properties of Neutron-Rich Nuclei

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Abstract. Investigations of exotic cluster-like phenomena in the framework of the SkyrmeHartree-Fock approach are reported. The occurrence of highly excited isomeric states is discussed in connection with the question of their stability in static and time-dependent Hartree Fock (TDHF) calculations. We find rotational stabilization of a 4α chain structure in 16 O occurring for a limited range of angular momenta. A toroidal configuration of 40 Ca was also stabilized by rotation and provides a very interesting example of rotation about a symmetry axis with a strictly quantized total angular momentum. Finally we look at the formation of nuclear pasta phases in a time-dependent approach and their classification. Complex isomeric states in Hartree-Fock calculationsIn an early paper on cluster structure of light nuclei [1] it was already found that in Hartree-Fock calculations exotic configurations can appear that appear to be as stable as the ground state but upon closer examination are found to in reality be unstable against some type of collective deformation. Fig. 1 illustrates how this works in practice: a chain configuration of three α-particles remains stable for several thousand static iterations in a Hartree-Fock code but then suddenly switches over to the ground state of 12 C via a bending deformation described by the Q 31 multipole accompanied by a drastic change in quadrupole deformation β. It is especially interesting in this context that the typical convergence criteria like the relative change in energy per iteration ΔE and uncertainty in the singleparticle energies Δh are at the same level for the chain state as for the ground state.

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Toroidal and spherical bubble nuclei

Cited by 138 publications

References 15 publications

Hollow nuclear matter

Hollow nuclear matter

Synthesis of superheavy elements by cold fusion

Exotic Cluster Structures in the Mean-Field Theory

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