Nuclear charge radii of (21-32)Mg.
نویسندگان
چکیده
Charge radii of all magnesium isotopes in the sd shell have been measured, revealing evolution of the nuclear shape throughout two prominent regions of assumed deformation centered on (24)Mg and (32)Mg. A striking correspondence is found between the nuclear charge radius and the neutron shell structure. The importance of cluster configurations towards N=8 and collectivity near N=20 is discussed in the framework of the fermionic molecular dynamics model. These essential results have been made possible by the first application of laser-induced nuclear orientation for isotope shift measurements.
منابع مشابه
Moments and mean square charge radii of short-lived argon isotopes
We report on the measurement of optical isotope shifts for 32-4°Ar and for 46Ar from which the changes in mean square nuclear charge radii across the N = 20 neutron shell closure are deduced. The investigations were carried out by collinear laser spectroscopy in fast beams of neutral argon atoms. The ultra-sensitive detection combines optical pumping, state-selective collisional ionization and ...
متن کاملStaggering of the nuclear charge radii in a superfluid model with good particle number.
A simple superfluid model with an effective four body interaction of monopole pairing type is used to explain the staggering of the charge radii in the isotope chains. The contribution of deformation and of the particle number projection are analyzed for the Sn isotopes. Good results are obtained for the staggering parameters and neutron pairing energies. PACS numbers: 21.10.Dr, 21.10.Ft, 21.30...
متن کاملGarvey-Kelson Relations for Nuclear Charge Radii
The Garvey-Kelson relations (GKRs) are algebraic expressions originally developed to predict nuclear masses. In this letter we show that the GKRs provide a fruitful framework for the prediction of other physical observables that also display a slowly-varying dynamics. Based on this concept, we extend the GKRs to the study of nuclear charge radii. The GKRs are tested on 455 out of the approximat...
متن کاملRadii and Binding Energies in Oxygen Isotopes: A Challenge for Nuclear Forces.
We present a systematic study of both nuclear radii and binding energies in (even) oxygen isotopes from the valley of stability to the neutron drip line. Both charge and matter radii are compared to state-of-the-art ab initio calculations along with binding energy systematics. Experimental matter radii are obtained through a complete evaluation of the available elastic proton scattering data of...
متن کاملMeasurement of the Charge Radii of Li using Laser Spectroscopy
The radioactive isotopes of lithium have been the subject of numerous investigations, particularly after the discovery of the exotic Halo nucleus Li in 1985 [1]. Matter radii, excited states and electromagnetic moments have been determined. But the charge distribution inside the nuclei and how it is affected by the increasing number of neutrons is still an open question. Charge radii from cross...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Physical review letters
دوره 108 4 شماره
صفحات -
تاریخ انتشار 2012