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质量数A≈125的热核GDR特性的研究

范红梅 , D.Santonocito , Y.Blumenfeld , P.Piattelli , C.Agodi , R.Alba , G.Bellia , R.Coniglione , F.Delaunay , A.Del Zoppo , P.Finocchiaro , N.Frascaria , V.Lima , C.Maiolino , E.Migneco , P.Sapienza

原子核物理评论 doi:10.3969/j.issn.1007-4627.2004.03.006

简单介绍了利用LNS的回旋加速器产生的116Sn束轰击12C和24Mg靶的实验装置以及实验过程.该实验通过MEDEA探测器测量了由全熔合与非全熔合反应产生的较低激发能区(160-300 MeV)质量数A≈125的热核的巨偶极共振特性, 比较了不同靶子、不同束流能量时巨偶极共振的γ产额的变化.

关键词: 熔合反应 , 巨偶极共振 γ产额 , BaF2晶体

Influences of externally applied potential on the properties of microscopic particles in nonlinear quantum systems

Physica B-Condensed Matter

When the Schrodinger equation in quantum mechanics is replaced by the nonlinear Schrodinger equation to describe microscopic particles in nonlinear quantum systems, it has been verified that the nature of the particles differs considerably from those in quantum mechanics, where they are localized and have also wave-corpuscle duality due to the nonlinear interactions. In this case the influences of externally applied potentials in the nonlinear Schrodinger equation on the natures of the microscopic particles have been studied by a perturbation theory. The studied results show that the external potential can change the states of the microscopic particles, such as the positions, amplitude and wave forms, but cannot change the wave-corpuscle duality. In the meanwhile, we find further that the relationship between the external potential and change of positions of the particle satisfies the rule of motion of classical particles. Thus we know from this study that the kinetic energy term, ((h) over bar (2)/2m)del(2)phi, in the nonlinear Schrodinger equation can only make the microscopic particles have a wave feature, but the nonlinear interaction b vertical bar phi vertical bar(2)phi determines its corpuscle feature, their combination makes the microscopic particles have a wave-corpuscle duality, and the potential V((r) over right arrow, t)phi changes only the positions, amplitude and wave form of the particles. Therefore the nonlinear interaction plays an important role in determination of the wave-corpuscle duality of microscopic particles in quantum theory. (C) 2010 Published by Elsevier B.V.

关键词: Microscopic particle;Schrodinger equation;External potential;wave-corpuscle duality;Nonlinear interaction;Quantum mechanics;schrodinger-equation

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