C, Tanihata, I. A, Jonson, B. B, Ye, Y.
A COMPREHENSİVE ANALYSİS OF DİFFERENT DENSİTY DİSTRİBUTİONS OF NEUTRON-RİCH 14BE EXOTİC NUCLEUS
Aygun, M. Energy, Sugimoto, T. Suzuki, T. Ozawa, A. Labiche, M. Al-Khalili, J. Aksyutina, Yu. Web of Science Citations: 1. X Short URL. To send the file to more than one person, separate the e-mail addresses by commas. My name:. My e-mail:. Start date Between and. The study of nuclear properties using secondary beams of exotic nuclei Investigation of direct nuclear reactions induced by light neutron rich nuclei Physics of exotic nuclei with the Ribras system Physics of exotic nuclei with the Ribras system Physics of exotic nuclei with the RIBRAS system Investigation of elastic scattering reactions with radioactive ion beam.
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Your e-mail:. Grant number:. This varied nuclear landscape in turn provides us with a laboratory in which to explore the dramatic influence of shape and shell structure on the proton quantum tunneling probability. The talk will explore new experimental approaches to the study of this fascinating phenomenon, including the exploration of new regions of the proton-drip-line, and regions of shape co-existence, where shape effects on tunneling would be probed in a uniquely sensitive manner.
Ponente : Philip J. Woods University of Edinburgh. Lunch 2h.
The structure of these nuclei provide essential infomation, among other things, about the isospin symmetry of the nuclear force as well as on proton-neutron correlations. As an example, the isobaric analogue states in mirror nuclei have shed light on the presence of isospin non-conserving forces in nuclear matter. In this presentation, the isospin symmetry and the proton-neutron correlations will be discussed with special attention to the perspectives offered by the new radioactive-ion beam facilities. Bentley and S. Lenzi, Prog.
Orlandi et al. Kaneko et al. C 82, R Cederwall et al. Ponente : J. Since spin and isospin are unique quantum numbers in nuclei, GT transitions represent very important nuclear response. In contrast, the CE reactions, e. These transitions depend only on the vector part of the weak interaction, and according to the conserved vector current CVC hypothesis, their strength Ft is a constant.
Then this value is used to determine the Vud term in the CKM quark mixing matrix, that should be unitary. These results have to be compared with other measurements that have been performed worldwide, showing the strong activity in this field. Finally, expectations and limitations for further studies will be addressed. Currently there are 13 superallowed transitions ranging from 10C to 74Rb that are determined accurately enough to contribute to the world average.
Unresolved puzzles in exotic nuclei
Additionally, a few theoretical correction terms are needed. Since , Q values of 15 different superallowed transitions, ranging from 10C to 62Ga, have been determined with high precision.
- Sol pu? dir, come si trova, No. 12 from Il Re Pastore, Act 2 (K208) (Full Score)!
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- Study of nuclear reactions with secondary beams of light exotic nuclei.
Using this so-called doublet technique and utilizing state-of-the art methods, such as ion-motion excitation with time-separated oscillatory fields, we have reached precisions down to the eV level. In-gas cell laser spectroscopy of neutron-deficient silver isotopes 25m.
Phys. Rev. C 57, () - Towards exotic nuclei via binary reaction mechanism
The recoiling reaction products are thermalised in a buffer gas cell filled typically with to mbar of argon. These results will be presented and the gas cell performances to study indium and tin isotopes as well as heavier isotopes will be discussed. Sonoda et al.
Kudryavtsev et al. Cocolios et al. Early onset of deformation in the neutron-deficient polonium isotopes identified by in-source resonant ionization laser spectroscopy 25m. The isotope shifts between all the isotopes have been extracted and large-scale atomic calculations have been used to determine the electronic parameters necessary to deduce changes in the mean-square charge radii mscr.
The extracted changes in the mscr deviate much earlier than predicted by nuclear models and point towards a well-deformed ground state from Po downwards, much earlier than suggested by alpha-decay and in-beam studies of those isotopes. After briefly introducing the technique and the challenges posed by the atomic calculations, we report in this contribution on the nuclear structure observables extracted charge radii and electromagnetic moments and their impact on our understanding of the shape coexistence phenomenon in this region of the nuclear chart.
Ponente : T. Cocolios Instituut voor Kern- en Stralingsfysica.
Tuesday February 22nd, Rp-process 40m. Explosive hydrogen burning studied with RIB 40m. With the perspectiveof the development of new intense radioactive beams oflight proton-rich nuclei, I propose to go through several examples of experiments that can be performed and their astrophysical motivations X-ray bursts, novae, gamma ray astronomy, meteorites.
The important point is that direct measurement of nuclear reaction cross sections is certainly the most ambitious goal and the most necessary. Some alternative mechanisms of reaction, as the radiative capture of two protons, and exotic as the p,gamma reaction producing an unbound nucleus,will also be discussed. Coffee 40m. Aluminum nucleosynthesis with proton-rich exotic beams 40m. The goal of understanding the production of galactic Al brings together progress in nuclear astrophysics from observations, theory, meteoritics, and laboratory experiments.
In the case of experimental work, nuclear reactions involving unstable isotopes are being studied to elucidate the production of Al in stellar explosive nucleosynthesis. This talk will discuss recent experiments carried out by our McMaster group to study such reactions with proton-rich radioactive ion beams at various laboratories worldwide e. Studies of neutron-deficient nuclei with breakup reactions 40m. A short review of theoretical descriptions for breakup reactions of neutron-deficient nuclei and, in particular, the breakup of weakly bound light nuclei. They include measurements of proton-removal cross sections, longitudinal momentum distributions of core fragments, extraction of spectroscopic factors from measurements of knock-out reactions, extraction of nuclear dipole response and of radiative capture reactions of astrophysical interest.
Exotic modes of excitations in neutron-deficient nuclei 40m. The evolution of low-energy isoscalar and isovector dipole strength in neutron-deficient nuclei is analyzed in a fully consistent mean-field plus QRPA framework. The fragments of interest were separated and identified in the FRS. Because of the reduced yield of Sb we conclude that proton radioactivity with a half life below ns is its dominant decay channel. The fragments were stopped in a stack of DSSDs for the correlation of implantation with subsequent decays. Ten Si detectors in front and behind this implantation zone served as calorimeter for betas.
A number of isomeric states was observed. In 98Cd we also observe an unknown transition, shedding light on core excited states. That gives us the GT strength of the decay which is the largest ever seen. Ponente : Thomas Faestermann Physics Dept.