Measurement of interaction cross sections using isotope beams of Be and B and isospin dependence of the nuclear radii

Tanihata, I.; Kobayashi, Toshio; Yamakawa, Osamu; Shimoura, S.; Ekuni, K.; Sugimoto, Katsuhisa; Takahashi, N.; Shimoda, T.; Satō, Hiroshi

doi:10.1016/0370-2693(88)90702-2

Cited by 732 publications

(409 citation statements)

References 6 publications

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“…1) and thus smaller matter radii, R m = 2.621 fm and R m = 2.670 fm compared to 2.945 fm in 11 Li. Our theoretically calculated R m for 6 He is in closer agreement with the value from the reanalysis of the data deduced from total interaction cross sections [5] performed by Al-Khalili et al [45]. As for 6 Li, the result from the present calculation exceeds the value R m = 2.32(3) fm from Tanihata et al [5], but almost coincides with the value R m = 2.45(7) fm deduced from the recent proton scattering experiments at GSI [23].…”

Section: Resultssupporting

confidence: 85%

“…The diffuseness parameter is defined as the distance over which the value of the density decreases in the surface region from 90% to 10% of its value in the center of the nucleus divided by 4.4. For comparison we give additionally in Table I the nuclear matter radii of 4 He, 6 He, 8 He, and 6 Li, 11 Li deduced from the proton scattering experiments at GSI [23], from the data on total interaction cross sections σ I [1,2,4] obtained from an analysis of Tanihata et al [5,6] and from a more recent reanalysis [45,46] of the same data. We present in Table I for a comparison also the experimental charge rms radii for 4 He and 6 Li from [54,59,61] and in Table II those for 58,62 Ni and 116,118 Sn from [61] and for 82,92,94 Kr from [76].…”

Section: Resultsmentioning

confidence: 99%

“…At present, efforts are devoted to investigate with such probes highly unstable isotopes at radioactive nuclear beam (RNB) facilities. Since the first experiments [1][2][3][4][5][6], it has been found from analyses of total interaction cross sections that weakly-bound neutron-rich light nuclei, e.g., 6,8 He, 11 Li,14 Be, 17,19 B, have increased sizes that deviate substantially from the R ∼ A 1/3 rule. It was realized (e.g., Refs.…”

Section: Introductionmentioning

confidence: 99%

“…We also give the charge densities and compare them to matter density distributions. The calculated proton, neutron, charge and matter rms radii are also presented and the latter are compared with those for 4,6,8 He and 6,11 Li deduced from the proton scattering experiments at GSI [23] and from the total interaction cross sections σ I [1,2,4] obtained from the measurements of Tanihata et al [5,6] and from the reanalysis [45,46] of the same data. In our calculations for the He and Li isotopes we do not use (in contrast to the work of Ref.…”

Section: Introductionmentioning

confidence: 99%

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Charge and matter distributions and form factors of light, medium, and heavy neutron-rich nuclei

et al. 2005

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Results of charge form factors calculations for several unstable neutron-rich isotopes of light, medium, and heavy nuclei (He, Li, Ni, Kr, Sn) are presented and compared to those of stable isotopes in the same isotopic chain. For the lighter isotopes (He and Li) the proton and neutron densities are obtained within a microscopic large-scale shell-model, while for heavier ones Ni, Kr, and Sn the densities are calculated in deformed self-consistent mean-field Skyrme HF+BCS method. We also compare proton densities to matter densities together with their rms radii and diffuseness parameter values. Whenever possible comparison of form factors, densities and rms radii with available experimental data is also performed. Calculations of form factors are carried out both in plane wave Born approximation (PWBA) and in distorted wave Born approximation (DWBA). These form factors are suggested as predictions for the future experiments on the electron-radioactive beam colliders where the effect of the neutron halo or skin on the proton distributions in exotic nuclei is planned to be studied and thereby the various theoretical models of exotic nuclei will be tested.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Charge and matter distributions and form factors of light, medium, and heavy neutron-rich nuclei

et al. 2005

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“…In [154] the Glauber approximation while in [155] the usual adiabatic Schrdinger model are used for the radial wave function. The result of the analysis of the total reaction cross section in [154] of 11 Li,11 Be, and 8 B and a 12 C target, demonstrated that the breakup channel coupling necessarily increases the reaction cross section and accordingly requires a larger rms radius of the halo nucleus, as seemed to be required by the data on the interaction cross section (the total reaction cross section without the projectile inelastic or breakup contributions) at the time, which were analyzed using the optical, eikonal, approximation [156,157]. This result is easily understood using the general structure of the transmission coefficient , smaller than the optical one, σ R,opt = 2π ∞ 0 bdbT opt (b).…”

Section: Coupled Channelsmentioning

confidence: 99%

Current Status of Nuclear Physics Research

Bertulani

Hussein

2015

Braz J Phys

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In this review we discuss the current status of research in nuclear physics which is being carried out in different centers in the World. For this purpose we supply a short account of the development in the area which evolved over the last 9 decades, since the discovery of the neutron. The evolution of the physics of the atomic nucleus went through many stages as more data become available. We briefly discuss models introduced to discern the physics behind the experimental discoveries, such as the shell model, the collective model, the statistical model, the interacting boson model, etc., some of these models may be seemingly in conflict with each other, but this was shown to be only apparent.The richness of the ideas and abundance of theoretical models attests to the important fact that the nucleus is a really singular system in the sense that it evolves from two-body bound states such as the deuteron, to few-body bound states, such as 4 He, 7 Li, 9 Be etc. and up the ladder to heavier bound nuclei containing up to more than 200 nucleons. Clearly statistical mechanics, usually employed in systems with very large number of particles, would seemingly not work for such finite systems as the nuclei, neither do other theories which are applicable to condensed matter. The richness of nuclear physics stems from these restrictions. New theories and models are presently being developed. Theories of the structure and reactions of neutron-rich and proton-rich nuclei, called exotic nuclei, halo nuclei, or Borromean nuclei, deal with the wealth of experimental data that became available in the last 35 years. Further, nuclear astrophysics and stellar and Big Bang nucleosynthesis have become a more mature subject. Due to limited space, this review only covers a few selected topics, mainly those with which the authors have worked on. Our aimed potential readers of this review are nuclear physicists and physicists in other areas, as well as graduate students interested in pursuing a career in nuclear physics.

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Die Entdeckung protonenreicher Riesenkerne

Lenske

Geißel

Schwab

1995

Physik in unserer Zeit

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Ein in vielen Experimenten bestätigtes Gesetzt der Kernphysik besagt, daß das Kernvolumen proportional mit der Massenzahl zunimmt, es gehört ebenfalls zum Lehrbuchwissen, daß diese Regel weitgehend unabhängig von der Zahl der Protonen und Neutronen ist. Es war daher eine große Überraschung, als man vor einigen Jahren in Experimenten mit bestimmten leichten Atomkernen am Rande des Stabilitätsbereichs massive Verletzungen dieser scheinbar etablierten Tatsache entdeckte. Diese war ein erster Hinweis auf ungewöhnliche, exotische Kernzustände, auf die sich seither die besondere Aufmerksamkeit der Kernphysiker richtet.

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Measurement of interaction cross sections using isotope beams of Be and B and isospin dependence of the nuclear radii

Cited by 732 publications

References 6 publications

Charge and matter distributions and form factors of light, medium, and heavy neutron-rich nuclei

Charge and matter distributions and form factors of light, medium, and heavy neutron-rich nuclei

Current Status of Nuclear Physics Research

Die Entdeckung protonenreicher Riesenkerne

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