广西师范大学学报（自然科学版） ›› 2012, Vol. 30 ›› Issue (3): 54-58.

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p-24Mg弹性散射对24Mg原子核的α粒子结构的检验

杨永栩   

  1. 广西师范大学物理科学与技术学院,广西桂林541004
  • 收稿日期:2012-07-10 出版日期:2012-09-20 发布日期:2018-12-04
  • 通讯作者: 杨永栩(1957—),男,广西钟山人,广西师范大学教授。E-mail:yyxu@mailbox.gxnu.edu.cn
  • 作者简介:杨永栩,男,汉族,1957年12月出生,广西钟山人,广西师范大学教授。
  • 基金资助:
    国家自然科学基金资助项目(10865002,11265004)

A Study of the Alpha-particle Structure for 24MgNucleus by p-24Mg Elastic Scattering

YANG Yong-xu   

  1. College of Physics and Technology,Guangxi Normal University,Guilin Guangxi 541004,China
  • Received:2012-07-10 Online:2012-09-20 Published:2018-12-04

摘要： 基于24Mg原子核的α粒子结构观点,利用已知的通过拟合电子散射实验得出的24Mg原子核基态电荷分布密度,得到24Mg原子核基态α粒子分布的形状因子。在Glauber多重散射理论框架下对入射能量为800 MeV 的p-24Mg弹性散射微分截面进行了研究计算。理论计算结果给出了合理的p-24Mg弹性散射截面角分布曲线,但截面量值与实验数据有一定的偏离。计算结果表明,本文基于24Mg原子核的α粒子结构观点得到24Mg原子核基态α粒子分布的形状因子有一定的合理性,但仍需进一步通过各类散射过程对24Mg原子核的6α、16O+α+α等结团结构进行比较研究,深入研究分析24Mg原子核的α结构特性。

关键词: 核粒子结构, p-24Mg弹性散射, Glauber散射理论

Abstract: Based on alpha-particle structure model of 24Mg nucleus,the form factor of alpha distribution in the 24Mg nucleus was obtained from the charge distribution.The differential cross section of the p-24Mg elasticscattering at 800 MeV have been calculated in the framework of Glauber multiple scattering theory.The results show that the mean features of the measured angular distribution of the cross section can be reasonably described by the alpha-particle structure model of 24Mg nucleus.But detailed fits to the experimental data,especially at the larger angle region,are discrepant.The different alpha-particle structure model of 24Mg nucleus should be further systematically investigated.

Key words: nuclear cluster model, p-24Mg elastic scattering, Glauber multiple scattering theory

中图分类号: 

  • O572.34
[1] BLANPIED G S,HINTZ N M,KYLE G S,et al.Proton scattering from 24Mg at 0.8 GeV[J].Phys Rev C,1979,20(4):1490-1497.
[2] BLANPIED G S,HINTZ N M,KYLE G S,et al.Elastic and inelastic scattering of 0.8 GeV protons from 24Mg and 26Mg[J].Phys Rev C,1982,25(1):422-437.
[3] BLANPIED G S,RITCHIE B G,BARLETT M L,et al.Elastic and inelastic scattering of 0.8 GeV polarized protons from 24Mg and 26Mg[J].Phys Rev C,1988,37(5):1987-1999.
[4] HICKS K H,JEPPESEN R G,LIN C C K,et al.Inelastic proton scatteringat 200 to 400 MeV for 24Mg and 28Si in a microscopic framework[J].Phys Rev C,1988,38(1):229-239.
[5] KIM Y J,AMOS K,KARATAGLIDIS S,et al.Microscopic model analyses ofproton scattering from 12C,20Ne,24Mg,28Si and 40Ca[J].Nuclear Physics A,2008,807:119-144.
[6] MARSH S,RAE W D M.The structure of 24Mg using thecranked cluster model[J].Physics Letters B,1986,180(3):185-190.
[7] KATO K,BANDO H.A Study of 24Mg by 16O+alpha+alpha Model[J].Progress of Theoretical Physics,1979,62(3):644-661.
[8] DESCOUVEMONT P.Microscopic study of alpha clustering in 12C,24Mg and 48Cr[J].Nuclear Physics A,2002,709:275-286.
[9] ITAGAKI N,KIMURA M,KUROKAWA C,et al.Alpha-condensed state with acore nucleus[J].Phys Rev C,2007,75(3):037303.
[10] ITAGAKI N,CSEH J,PLOSZAJCZAK M.Simplified modeling of cluster-shell competition in 20Ne and 24Mg[J].Phys Rev C,2011,83(1):014302.
[11] ICHIKAWA T,ITAGAKI N,KAWABATA T,et al.Gas-like state of alpha clusters around a 16O core in 24Mg[J].Phys Rev C,2011,83(6):061301.
[12] FROSCH R F,McCARTHY J S,RAND R E,et al.Structure of the 4He nucleus from elastic electron scattering[J].Phys Rev,1967,160(4):874-879.
[13] KARAKOC M,BOZTOSUN I.α-α double folding cluster potentialdescription of the 12C+24Mg system[J].Phys Rev C,2006,73(4):047601.
[14] VRIES H De,JAGER C W De,VRIES C De.Nuclear charge-density-distribution parameters from elastic electron scattering[J].Atomic Data and NuclearData Tables,1987,36(3):495-536.
[15] LI G C,YEARIAN M R,SICK I.High-momentum-transfer electron scattering from 24Mg,27Al,28Si,and 32S[J].Phys Rev C,1974,9(5):1861-1877.
[16] GLAUBER R J.Lecture in theoretical physics[M].BRITTIN W E,DUNHAM L G.New York:Interscience,1959:315.
[17] LI Qing-run,ZHOU jin-li.Proton-carbon elastic scattering in the intermediate energyrange based on the alpha-particle model[J].J Phys G,1991,17:663-674.
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