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arXiv 0905.2901nucl-exnucl-th
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从24 Mg +12 C衰变的二元反应

Binary reaction decays from 24Mg+12C

C. Beck, P. Papka, A. Sanchez i Zafra, S. Thummerer, F. Azaiez, P. Bednarczyk, S. Courtin, D. Curien, O. Dorvaux, D. Lebhertz, A. Nourreddine, M. Rousseau, W. v… 展开作者

C. Beck, P. Papka, A. Sanchez i Zafra, S. Thummerer, F. Azaiez, P. Bednarczyk, S. Courtin, D. Curien, O. Dorvaux, D. Lebhertz, A. Nourreddine, M. Rousseau, W. von Oertzen, B. Gebauer, C. Wheldon, Tz. Kokalova, G. de Angelis, A. Gadea, S. Lenzi, S. Szilner, D. R Napoli, W. N. Catford, D. G. Jenkins, G. Royer

摘要:

本文研究了~(24)Mg ~(*)中的带电粒子和γ衰变在~(12)C +~(12)C碰撞中出现准分子共振时的激发能。在测量的24 Mg * 激发能区域内讨论了与低自旋共振结构相关的超形变和超形变带的发生的各种理论预测。在Elab(24 Mg)= 130 MeV的能量下,研究了24 Mg +12 C的逆运动学反应,Elab(24 Mg)= 130 MeV的能量使24 Mg态的布居衰变到12 C +12 C共振分裂态.独家数据是用安装在斯特拉斯堡VIVITRON串联设施的EUROBALL IV的二元反应光谱仪收集的。具有大变形的特定结构被选择性地填充在二元反应中,并研究了其相关的γ衰变。通过选择激发能或经由两体Q值的进入点,已经选择了与非弹性和α-转移通道相关联的符合事件。的二元反应通道的分析提出了一个特别强调24镁-γ,20氖-γ和16 O-γ符合。在24 Mg和16 O的高能态上分别推导出了新的信息(自旋和分支比)。

英文摘要:

Charged particle and gamma decays in 24Mg* are investigated for excitation energies where quasimolecular resonances appear in 12C+12C collisions. Various theoretical predictions for the occurence of superdeformed and hyperdeformed bands associated with resonance structures with low spin are discussed within the measured 24Mg* excitation energy region. The inverse kinematics reaction 24Mg+12C is studied at E_lab(24Mg) = 130 MeV, an energy which enables the population of 24Mg states decaying into 12C+12C resonant break-up states. Exclusive data were collected with the Binary Reaction Spectrometer in coincidence with EUROBALL IV installed at the VIVITRON Tandem facility at Strasbourg. Specific structures with large deformation were selectively populated in binary reactions and their associated gamma decays studied. Coincident events associated with inelastic and alpha-transfer channels have been selected by choosing the excitation energy or the entry point via the two-body Q-values. The analysis of the binary reaction channels is presented with a particular emphasis on 24Mg-gamma, 20Ne-gamma and 16O-gamma coincidences. New information (spin and branching ratios) is deduced on high-energy states in 24Mg and 16O, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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