Measurement of light charged particles in the decay channels of medium-mass excited compound nuclei
S. Valdre', S. Barlini, G. Casini, G. Pasquali, S. Piantelli, S. Carboni, M. Cinausero, F. Gramegna, T. Marchi, G. Baiocco, L. Bardelli, G. Benzoni, M. Bini, N.… 展开作者
S. Valdre', S. Barlini, G. Casini, G. Pasquali, S. Piantelli, S. Carboni, M. Cinausero, F. Gramegna, T. Marchi, G. Baiocco, L. Bardelli, G. Benzoni, M. Bini, N. Blasi, A. Bracco, S. Brambilla, M. Bruno, F. Camera, A. Corsi, F. Crespi, M. D Agostino, M. Degerlier, V. L. Kravchuk, S. Leoni, B. Million, D. Montanari, L. Morelli, A. Nannini, R. Nicolini, G. Poggi, G. Vannini, O. Wieland, P. Bednarczyk, M. Ciemała, J. Dudek, B. Fornal, M. Kmiecik, A. Maj, M. Matejska-Minda, K. Mazurek, W. Meczynski, S. Myalski, J. Styczen, M. Zieblinski
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4 pages, 3 figures, Contribution to conference proceedings of the 25th International Nuclear Physics Conference (INPC 2013) Journal-ref: 25th International Nuclear Physics Conference (INPC 2013), Firenze : Italy (2013)
The 48Ti on 40Ca reactions have been studied at 300 and 600 MeV focusing on the fusion-evaporation (FE) and fusion-fission (FF) exit channels. Energy spectra and multiplicities of the emitted light charged particles have been compared to Monte Carlo simulations based on the statistical model. Indeed, in this mass region (A about 100) models predict that shape transitions can occur at high spin values and relatively scarce data exist in the literature about coincidence measurements between evaporation residues and light charged particles. Signals of shape transitions can be found in the variations of the lineshape of high energy gamma rays emitted from the de-excitation of GDR states gated on different region of angular momenta. For this purpose it is important to keep under control the FE and FF processes, to regulate the statistical model parameters and to control the onset of possible preequilibrium emissions from 300 to 600 MeV bombarding energy.
Study of cluster structures of excited states for the light nuclei He, Li and Be in three-body photodisintegration processes. Application for the excited states of the 6He* nucleus
Parameters of Cascade Gamma-Decay of Compound-Nuclei Nd-146, Gd-156, Yb-172, Ta-182, W-184, Os-191, Th-231,233, U-239, Pu-240 from Experimental Data of Reaction $(n,γ)$
Parameters of Distribution of the Primary Gamma-Transition Intensities Following Resonance Neutron Capture and Some Properties of Compound Nuclei $^{157,159}$Gd
Systematic Study of Survival Probability of Excited Superheavy Nuclei
用统计模型研究了含$100 \leq Z \leq 134$的超重核对中子发射和裂变的稳定性。特别是对这些SHN的1n沟道中抗裂变的生存概率进行了系统的研究。在目前的计算中，中子分离能和壳层修正能始终取自有限程液滴模型的计算结果，该模型预测了SHN在Z=115和N=179附近的稳定岛。事实证明，在最佳激发能下激发SHN的1n通道中计算的存活概率在Z=115和N=179附近最大化的意义上，这种稳定岛对于激发SHN持续存在。这表明1n沟道中的存活几率主要由核壳效应决定。
Yield scaling, size hierarchy and fluctuations of observables in fragmentation of excited heavy nuclei
本文研究了入射能量为32-50 A MeV的Sn +Sn反应产生的单源和80 A MeV的Au+Au碰撞产生的准粒子的多重碎裂性质。这两种类型的源的比较有关Fisher标度，Zipf定律，碎片大小和波动观测。所有数据均观察到Fisher标度。从Fisher标度中提取的赝临界能量在Au +Sn中心碰撞和Au准抛射体之间是一致的。在后一种情况下，它也对应于波动最大的能量区域。由Zipf分析得到的临界能高于Fisher分析得到的临界能。
Particle emission from $^{40}$Ar nuclei excited in fixed-target $^{208}$Pb+$^{40}$Ar UPC at the LHC
Institute of Nuclear Physics PAN（波兰科学院核物理研究所）；Universitá degli Studi di Ferrara（费拉拉大学）；INFN Sezione di Ferrara（意大利国家核物理研究所费拉拉分部）；University of Rzeszów（热舒夫大学）
The comparative analysis of channels of three α-particles and ^12C nuclei production in ^16Op-collisions at 3.25 A GeV/c
本文提供了在3.25 A GeV/c的^16 Op碰撞中三个α粒子和^12 C核产生通道的比较分析的新实验数据。结果表明，产生三个α粒子的通道在一半的事件中是由一个激发态^12 C ^* 核衰变的结果实现的，而通道的其余部分是由一个α团簇从弱束缚的剩余核（包含三个α团簇）中敲出实现的。各向同性相空间模型上的激发系统的衰减的建模是合理的，在小的值的激发能，然而，它允许采取有价值的额外信息的动态调查过程中的实验数据。
采用Fayans { \it et al}的EDF方法，在自洽的TFFS中计算了100多个球奇核的基态和激发态的磁矩.我们把自己限制在有一个中子和一个质子粒子（空穴）的原子核中，这些粒子被添加到魔法或半魔法的核心中。一个简单的模型，没有相互作用的奇核子。在大多数情况下，我们分析，得到了良好的协议与实验数据。考虑了几种情况下，这种简单的模型不工作，有必要超越。对许多不稳定奇核和奇-奇核的磁矩的未知值进行了预测，其中包括60个激发态奇-奇核的磁矩。
Novel chiral-wobbling excitation mode in atomic nuclei
Islamic University of Science and Technology（伊斯兰科学技术大学）；University of Kashmir（克什米尔大学）；Institute of Physics (IOP)（物理研究所（IOP））；Homi Bhabha National Institute（霍米·巴巴国家研究所）；Government Degree College Shopian（肖皮安政府学位学院）；Government Degree College Kulgam（库尔加姆政府学位学院）；Shandong University（山东大学）
Microscopic study of nuclei synthesis in pycnonuclear reaction $^{12}$C + $^{12}$C in neutron stars
Institute of Modern Physics, Chinese Academy of Sciences（中国科学院近代物理研究所）；Southern Center for Nuclear-Science Theory (SCNT)（南方核科学理论中心）；Heavy Ion Science and Technology Key Laboratory, Institute of Modern Physics, Chinese Academy of Sciences（中国科学院近代物理研究所重离子科学与技术重点实验室）；School of Nuclear Sciences and Technology, University of Chinese Academy of Sciences（中国科学院大学核科学与技术学院）；Institute for Nuclear Research, National Academy of Sciences of Ukraine（乌克兰国家科学院核物理研究所）；Bogolyubov Institute for Theoretical Physics（博戈留博夫理论物理研究所）
Different mechanism of two-proton emission from proton-rich nuclei $^{23}$Al and $^{22}$Mg
用RIKEN RI束流工厂的抛射体碎片分离器（RIPS）测量了两个激发态丰质子核$^{23}$ Al $\rightarrow$ p + p + $^{21}$ Na和$^{22}$ Mg $\rightarrow$ p + p + $^{20}$ Ne的三体衰变的双质子相对动量（$q_{pp}$）和张开角（$θ_{pp}$）分布。在高激发态$^{22}$ Mg的双质子分裂通道中，在$q_{pp}\sim20$ MeV/c处观察到明显的峰，以及在30 $^\circ$附近观察到$θ_{pp}$的峰。相反，对于$^{23}$ Al情况，不存在这样的峰。结果表明，激发态$^{22}$ Mg的双质子发射机制与$^{23}$ Al的不同，前者在高激发态下具有较好的双质子发射，而后者主要由连续衰变过程控制.
