Investigation of the isoscalar response of Mg-24 to Li-6 scattering

doi:10.1103/PhysRevC.104.014607

	Investigation of the isoscalar response of Mg-24 to Li-6 scattering
	Zamora, J. C.15; Sullivan, C.12,13,14; Zegers, R. G. T.12,13,14; Aoi, N.11; Batail, L.9,10; Bazin, D.12,14; Carpenter, M.8; Carroll, J. J.7; Fang, Y. D.11; Fujita, H.11
刊名	PHYSICAL REVIEW C
	2021-07-07
卷号	104 期号:1 页码:7
ISSN号	2469-9985
DOI	10.1103/PhysRevC.104.014607
通讯作者	Zamora, J. C.()
英文摘要	Background: Mg-24 is a strongly deformed nucleus in the ground state. Deformation effects can be observed in the structure of the isoscalar giant monopole and quadrupole resonances. Mg-24 is also a nucleus that is well known to present different types of cluster-oscillation modes. Both giant resonances and cluster states are strongly populated by isoscalar transitions. Purpose: To extract the E0, E1, and E2 transition strengths via Li-6 scattering. The Li-6 probe is a powerful tool for investigating the isoscalar nuclear response with a very favorable ratio of resonance-to-continuum background. Method: Double-differential cross sections of Li-6 inelastic scattering, at the beam energy of 100 MeV/u, were measured in the excitation-energy range 10-40 MeV and scattering angles 0-3 degrees. A multipole-decomposition analysis was performed for extracting the isoscalar E0, E1, and E2 strength distributions. Results: The extracted multipole strengths were compared with predictions from consistent quasiparticle random phase approximation calculations. The theoretical predictions are in fair agreement with the experimental data. The E0 strength was also compared with results from antisymmetrized molecular dynamics calculations found in the literature. A few peaks in the experimental data might be associated with clustering in Mg-24. Conclusions: Ground-state deformation effects were observed in the isoscalar giant monopole resonance (ISGMR) and isoscalar giant quadrupole resonance (ISGQR) distributions. The ISGMR strength is split in two peaks around 19 and 28 MeV. The ISGQR exhibits a pronounced peak at 20 MeV with a broadening at the low-energy region, similar to predictions from microscopic calculations. Signatures of excitation of cluster states were observed in the E0 response. Further studies including particle-decay measurements will be required to confirm the nature of the observed peaks.
资助项目	Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[2018/04965-4] ; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)[2016/17612-7] ; National Science Foundation[PHY-1430152] ; National Science Foundation[PHY-1565546] ; National Science Foundation[PHY-1913554] ; National Science Foundation[PHY-1713857] ; National Science Foundation[PHY-2011890] ; US DOE[DE-AC02-06CH113567] ; German BMBF[05P19RDFN1] ; International Joint Research Promotion Program of Osaka University ; DFG[SFB 1245] ; DFG[279384907] ; Hirose International Scholarship Foundation
WOS关键词	GIANT MONOPOLE RESONANCE ; INELASTIC ALPHA-SCATTERING ; FISSION DECAY ; QUADRUPOLE-RESONANCE ; NUCLEAR-MATTER ; INCOMPRESSIBILITY ; EXCITATION ; STRENGTH
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000670699900003
资助机构	Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) ; National Science Foundation ; US DOE ; German BMBF ; International Joint Research Promotion Program of Osaka University ; DFG ; Hirose International Scholarship Foundation
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/137044]
专题	中国科学院近代物理研究所
通讯作者	Zamora, J. C.
作者单位	1.Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA 2.Tech Univ Darmstadt, Inst Nucl Phys, D-64289 Darmstadt, Germany 3.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan 4.Univ Groningen, ESRIG, Nucl Energy Grp, NL-9747 AA Groningen, Netherlands 5.Swarthmore Coll, Dept Phys & Astron, Swarthmore, PA 19081 USA 6.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA 7.DEVCOM Army Res Lab, Adelphi, MD 20783 USA 8.Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA 9.Univ Paris Saclay, LMCE, CEA, F-91680 Bruyeres Le Chatel, France 10.CEA, DAM, DIF, F-91297 Arpajon, France
推荐引用方式 GB/T 7714	Zamora, J. C.,Sullivan, C.,Zegers, R. G. T.,et al. Investigation of the isoscalar response of Mg-24 to Li-6 scattering[J]. PHYSICAL REVIEW C,2021,104(1):7.
APA	Zamora, J. C..,Sullivan, C..,Zegers, R. G. T..,Aoi, N..,Batail, L..,...&Zhu, S..(2021).Investigation of the isoscalar response of Mg-24 to Li-6 scattering.PHYSICAL REVIEW C,104(1),7.
MLA	Zamora, J. C.,et al."Investigation of the isoscalar response of Mg-24 to Li-6 scattering".PHYSICAL REVIEW C 104.1(2021):7.