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Nadasen, A.; Stevens, T.; Farhat, Jamil; Brusoe, J.; Schwandt, P.; Js, Winfield; G, Yoo; Anantaraman, N.; Becchetti, FD; Brown, J.; Hotz, B; Jw, Jänecke; Roberts, D. A.; Warner, R.E.

doi:10.1103/physrevc.47.674

Cited by 61 publications

(26 citation statements)

References 23 publications

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“…We finally note that the rainbow pattern has also been observed in the elastic scattering of 6,7 Li at energies up to around 50 MeV/nucleon [45,46,47] and 9 Be at 18 MeV/nucleon [48]. For example, the elastic 6 Li scattering on the light targets has shown a broad exponential falloff in the cross section at large angles which was identified as the "shoulder" of the primary rainbow maximum.…”

Section: Other Systemssupporting

confidence: 51%

Nuclear rainbow scattering and nucleus–nucleus potential

Khoa

Oertzen

Bohlen

et al. 2007

J. Phys. G: Nucl. Part. Phys.

208

308

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Abstract. Elastic scattering of α-particle and some tightly-bound light nuclei has shown the pattern of rainbow scattering at medium energies, which is due to the refraction of the incident wave by a strongly attractive nucleus-nucleus potential. This review gives an introduction to the physics of the nuclear rainbow based essentially on the optical model description of the elastic scattering. Since the realistic nucleusnucleus optical potential (OP) is the key to explore this interesting process, an overview of the main methods used to determine the nucleus-nucleus OP is presented. Given the fact that the absorption in a rainbow system is much weaker than that usually observed in elastic heavy-ion scattering, the observed rainbow patterns were shown to be linked directly to the density overlap of the two nuclei penetrating each other in the elastic channel, with a total density reaching up to twice the nuclear matter saturation density ρ 0 . For the calculation of the nucleus-nucleus OP in the doublefolding model, a realistic density dependence has been introduced into the effective M3Y interaction which is based originally on the G-matrix elements of the Reid-and Paris nucleon-nucleon (NN) potentials. Most of the elastic rainbow scattering data were found to be best described by a deep real OP like the folded potential given by this density dependent M3Y interaction. Within the Hartree-Fock formalism, the same NN interaction gives consistently a soft equation of state of cold nuclear matter which has an incompressibility constant K ≈ 230 − 260 MeV. Our folding analysis of numerous rainbow systems has shown that the elastic α-nucleus and nucleus-nucleus refractive rainbow scattering is indeed a very helpful experiment for the determination of the realistic K value. The refractive rainbow-like structures observed in other quasielastic scattering reactions have also been discussed. Some evidences for the refractive effect in the elastic scattering of unstable nuclei are presented and perspectives for the future studies are discussed.

show abstract

Section: Other Systemssupporting

confidence: 51%

Nuclear rainbow scattering and nucleus–nucleus potential

Khoa

Oertzen

Bohlen

et al. 2007

J. Phys. G: Nucl. Part. Phys.

208

308

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“…Fig. 5 also includes the optical model cross sections obtained by fitting known elastic scattering distributions [24,25]. One observes an even better description of the scatter effect in the reaction cross sections.…”

Section: Theoretical Predictions and Comparison With Measurementmentioning

confidence: 99%

Reaction and proton-removal cross sections ofLi6,Be7
Warner¹,
Cârstoiu²,
Brown³
et al. 2006
Phys. Rev. C
Self Cite
41
2
37
0
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Excitation functions for total reaction cross sections, σR, were measured for the light, mainly proton-rich nuclei 6 Li, 7 Be, 10 B, 9,10,11 C, 12 N, 13,15 O, and 17 Ne incident on a Si telescope at energies between 15 and 53 MeV/nucleon. The telescope served as target, energy degrader and detector. Proton-removal cross sections, σ2p for 17 Ne and σp for most of the other projectiles, were also measured. The strong absorption model reproduces the A-dependence of σR, but not the detailed structure. Glauber multiple scattering theory and the JLM folding model provided improved descriptions of the measured σR values. rms radii, extracted from the measured σR using the optical limit of Glauber theory, are in good agreement with those obtained from high energy data. Oneproton removal reactions are described using an extended Glauber model, incorporating second order noneikonal corrections, realistic single particle densities, and spectroscopic factors from shell model calculations.

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“…An empirical logarithmic dependence of the form J V =−785+95 ln͑E͒ has been found in Ref. [50] mostly based on unique OM potentials determined from 35 and 53 MeV/ nucleon 6 Li scattering on light targets. This matches perfectly the dependence obtained with the dispersion relation for E Ͼ 10 MeV/ nucleon, but disagrees at lower energies.…”

Section: Dispersion Relationmentioning

confidence: 99%

“…At high energy, Nadasen and his group [16,17] have been able to derive a unique optical potential which was essential to assess the quality of the folding model. At lower energies, ambiguities found in the analysis of data prevented any definite conclusion about the strength and energy dependence of the optical potential.…”

Section: O+mentioning

confidence: 99%

Refractive effects in the scattering of loosely bound nuclei

et al. 2004

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A study of the interaction of the loosely bound nuclei 6,7 Li at 9 and 19 MeV/ nucleon with light targets has been undertaken. With the determination of unambiguous optical potentials in mind, elastic data for four projectile-target combinations and one neutron transfer reaction 13 C͑ 7 Li, 8 Li͒ 12 C have been measured over a large angular range. The kinematical regime encompasses a region where the mean field (optical potential) has a marked variation with mass and energy, but turns out to be sufficiently surface transparent to allow strong refractive effects to be manifested in elastic scattering data at intermediate angles. The identified exotic feature, a "plateau" in the angular distributions at intermediate angles, is fully confirmed in four reaction channels and is interpreted as a prerainbow oscillation resulting from the interference of the barrier and internal barrier far-side scattering subamplitudes.

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Elastic scattering of 318 MeVLi6fromC

Cited by 61 publications

References 23 publications

Nuclear rainbow scattering and nucleus–nucleus potential

Nuclear rainbow scattering and nucleus–nucleus potential

Reaction and proton-removal cross sections ofLi6,Be7
Warner¹,
Cârstoiu²,
Brown³
et al. 2006
Phys. Rev. C
Self Cite
41
2
37
0
View full text Add to dashboard Cite

Refractive effects in the scattering of loosely bound nuclei

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Elastic scattering of 318 MeVLi6fromC

Cited by 61 publications

References 23 publications

Nuclear rainbow scattering and nucleus–nucleus potential

Nuclear rainbow scattering and nucleus–nucleus potential

Reaction and proton-removal cross sections ofLi6,Be7Warner1, Cârstoiu2, Brown3 et al. 2006Phys. Rev. CSelf Cite412370View full textAdd to dashboardCite

Refractive effects in the scattering of loosely bound nuclei

Contact Info

Product

Resources

About

Reaction and proton-removal cross sections ofLi6,Be7
Warner¹,
Cârstoiu²,
Brown³
et al. 2006
Phys. Rev. C
Self Cite
41
2
37
0
View full text Add to dashboard Cite