Fine structure of the isoscalar giant quadrupole resonance in 28Si and 27Al

被引：10

作者：

Usman, I. T. ^{[1
,2
]}

Buthelezi, Z. ^{[2
]}

Carter, J. ^{[1
]}

Cooper, G. R. J. ^{[3
]}

Fearick, R. W. ^{[4
]}

Fortsch, S. V. ^{[2
]}

Fujita, H. ^{[1
,2
,5
]}

Fujita, Y. ^{[5
]}

von Neumann-Cosel, P. ^{[6
]}

Neveling, R. ^{[2
]}

Papakonstantinou, P. ^{[7
]}

Pysmenetska, I. ^{[6
]}

Richter, A. ^{[6
]}

Roth, R. ^{[6
]}

Sideras-Haddad, E. ^{[1
]}

Smit, F. D. ^{[2
]}

机构：

[1] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa

[2] iThemba LABS, POB 722, ZA-7129 Somerset West, South Africa

[3] Univ Witwatersrand, Sch Earth Sci, ZA-2050 Johannesburg, South Africa

[4] Univ Cape Town, Dept Phys, ZA-7700 Rondebosch, South Africa

[5] Osaka Univ, Res Ctr Nucl Phys, Ibaraki, Osaka 5670047, Japan

[6] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[7] Inst for Basic Sci Korea, Rare Isotope Sci Project, Daejeon 34047, South Korea

来源：

PHYSICAL REVIEW C | 2016年 / 94卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1103/PhysRevC.94.024308

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The isoscalar giant quadrupole resonance in Si-28 and Al-27 has been investigated with high-energy-resolution proton inelastic scattering at E-p = 200 MeV and at scattering angles close to the maximum of Delta L = 2 angular distributions with the K600 magnetic spectrometer of iThemba LABS, South Africa. Characteristic scales are extracted from the observed fine structure with a wavelet analysis and compared for Si-28 with random-phase approximation and second random phase approximation calculations with an interaction derived from the Argonne V18 potential by a unitary transformation. A recent extension of the method to deformed nuclei provides the best description of the data, suggesting the significance of Landau damping.

引用

页数：6

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