Electromagnetic M1 transition strengths from inelastic proton scattering: The cases of 48Ca and 208Pb

被引：43

作者：

Birkhan, J. ^{[1
]}

Matsubara, H. ^{[2
,3
]}

von Neumann-Cosel, P. ^{[1
]}

Pietralla, N. ^{[1
]}

Ponomarev, V. Yu. ^{[1
]}

Richter, A. ^{[1
]}

Tamii, A. ^{[2
]}

Wambach, J. ^{[1
,4
]}

机构：

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

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

[3] Tokyo Womens Med Univ, Shinjuku Ku, 8-1 Kawada Cho, Tokyo 1628666, Japan

[4] ECT, I-38123 Villazzano, Trento, Italy

来源：

PHYSICAL REVIEW C | 2016年 / 93卷 / 04期

关键词：

INTERMEDIATE ENERGIES; DIPOLE RESPONSE; NUCLEI; SPIN; EXCITATIONS; RESONANCES; SN-120; SM-154; MODES; SHELL;

D O I：

10.1103/PhysRevC.93.041302

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：

Inelastic proton scattering at energies of a few hundred million electron volts and extreme forward angles selectively excite the isovector spin-flip M1 (IVSM1) resonance. A method based on isospin symmetry is presented to extract its electromagnetic transition strength from the (p, p') cross sections. It is applied to Ca-48, a key case for an interpretation of the quenching phenomenon of the spin-isospin response, and leads to a M1 strength consistent with an older (e, e') experiment excluding the almost two times larger value from a recent (gamma, n) experiment. Good agreement with electromagnetic probes is observed in Pb-208, suggesting the possibility of extracting systematic information on the IVSM1 resonance in heavy nuclei.

引用

页数：5

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