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Excitation energy spectra and absolute cross section angular distributions were measured for the 13C(18O,16O)15C two-neutron transfer reaction at 84 MeV incident energy. This reaction selectively populates two-neutron configurations in the…

We present a phenomenological theory of nuclei that incorporates clustering at the nuclear surface in a general form. The theory explains the recently extracted large symmetry energy by Natowitz et al. at low densities of nuclear matter and…

核理论 · 物理学 2015-06-03 Q. N. Usmani , Nooraihan Abdullah , K. Anwar , Zaliman Sauli

The persistence of $\alpha+\alpha+t$ cluster configuration in the ground state of $^{11}$B is discussed. The $\alpha$ particles emitted from excited states of $^{12}$C could be utilized for cancer treatment, where the cluster states are…

核理论 · 物理学 2022-02-16 Naoyuki Itagaki , Tomoya Naito , Yuichi Hirata

Nucleosynthesis in the standard hot big bang cosmology offers a successful account of the production of the light nuclides during the early evolution of the Universe. Consistency among the predicted and observed abundances of D, $^3$He,…

天体物理学 · 物理学 2016-08-30 Gary Steigman , James. E. Felten

Ternary fission of actinides probes the state of the nucleus at scission. Light clusters are produced in space and time very close to the scission point. Within the nonequilibrium statistical operator method, a generalized Gibbs…

核理论 · 物理学 2021-06-09 G. Röpke , J. B. Natowitz , H. Pais

We have calculated the fission fragments' mass distributions for several isotopes of heavy and super-heavy nuclei from uranium to flerovium within an improved scission point model. For all considered nuclei, in addition to the standard…

核理论 · 物理学 2024-11-08 F. A. Ivanyuk , N. Carjan

Recent studies of clustering in light nuclei with an initial energy above 1 A GeV in nuclear treack emulsion are overviewed. The results of investigations of the relativistic $^9$Be nuclei fragmentation in emulsion, which entails the…

核实验 · 物理学 2008-11-26 D. A. Artemenkov , T. V. Shchedrina , R. Stanoeva , P. I. Zarubin

We review recent experimental and theoretical progress in understanding the microscopic details of clustering in light nuclei. We discuss recent experimental results on $\alpha$-conjugate systems, molecular structures in neutron-rich…

核理论 · 物理学 2018-08-30 Martin Freer , Hisashi Horiuchi , Yoshiko Kanada-En'yo , Dean Lee , Ulf-G. Meißner

New photometric and spectroscopic observations of galaxies in the directions of three distant clusters are presented as part of our on-going high-redshift cluster survey. The clusters are CL1324+3011 at z = 0.76, CL1604+4304 at z = 0.90,…

天体物理学 · 物理学 2009-11-06 Marc Postman , Lori Lubin , J. Bev Oke

The composition of hot and dense nuclear matter is calculated including the $1p$-shell nuclei $4 \le A \le 16$. In-medium shifts, in particular Pauli blocking, are determined by the intrinsic wave function of the nuclei. Results are given…

核理论 · 物理学 2020-07-01 Gerd Röpke

Clusters of galaxies are the largest gravitationally bound objects in the Universe, containing about 10^15 solar masses of hot (10^8 K) gas, galaxies and dark matter in a typical volume of about 10 Mpc^3. Magnetic fields and relativistic…

Some time ago the possibility of classical (without Gamow tunneling) universal description of radioactive nuclei decay was demonstrated. Such possibility is basis on the classical interpretation of Bohmian Psi-field reality in…

核理论 · 物理学 2016-08-03 Strachimir Cht. Mavrodiev , M. A. Deliyergiyev

The prime objective is to settle a contradiction between a high nongravitational acceleration affecting the orbital motion of comet C/1995 O1 and its enormous nucleus by modeling it as a compact cluster of boulder-sized fragments held…

地球与行星天体物理 · 物理学 2017-09-12 Zdenek Sekanina

Brownian particles that are replicated and annihilated at equal rate have strongly correlated positions, forming a few compact clusters separated by large gaps. We characterize the distribution of the particles at a given time, using a…

统计力学 · 物理学 2023-02-23 Benoît Ferté , Pierre Le Doussal , Alberto Rosso , Xiangyu Cao

We present high-resolution seeing limited and AO NIR imaging observations of the stellar cluster within about one parsec of Sgr A*, the massive black hole at the centre of the Milky Way. Stellar number counts and the diffuse background…

天体物理学 · 物理学 2009-11-13 R. Schoedel , A. Eckart , T. Alexander , D. Merritt , R. Genzel , A. Sternberg , L. Meyer , F. Kul , J. Moultaka , T. Ott , C. Straubmeier

We present an experimental study on the collective behavior of macroscopic self-propelled particles that are externally excited by light. This property allows testing the system response to the excitation intensity in a very versatile…

软凝聚态物质 · 物理学 2025-09-03 Sára Lévay , Axel Katona , Hartmut Löwen , Raúl Cruz Hidalgo , Iker Zuriguel

This article comprises three sections. Section 2 starts with a review of ab initio no-core shell model calculations by Monte Carlo Shell Model. Alpha clustering arises for 8,10,12Be and 12C with Daejeon16 and JISP16 interactions, even in…

核理论 · 物理学 2026-04-09 Takaharu Otsuka , Alexander Volya , Naoyuki Itagaki

Scrupulous theoretical study of 8Be nucleus states, both clustered and non-clustered, is performed over a wide range of the excitation energies. The quantities which characterize the degree of the alpha-clustering of these states:…

核理论 · 物理学 2020-12-30 D. M. Rodkin , Yu. M. Tchuvil'sky

The spatial dispersion of the single-nucleon wave functions is analyzed using the self-consistent mean-field framework based on nuclear energy density functionals, and with the harmonic oscillator approximation for the nuclear potential. It…

核理论 · 物理学 2018-06-20 J. -P. Ebran , E. Khan , R. -D Lasseri , D. Vretenar

Recent simulation work has successfully captured the formation of the star clusters that have been observed in merging galaxies. These studies, however, tend to focus on studying extreme starbursts, such as the Antennae galaxies. We aim to…

宇宙学与河外天体物理 · 物理学 2015-06-16 Leila C. Powell , Frederic Bournaud , Damien Chapon , Romain Teyssier