Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in...Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in terms of both the DWBA and coupled channel calculations. The DWBA results introduce a reasonable description of the angular distributions and excitation function data. The coupled channel calculations provide a better agreement with the experimental forward and backward angle data than the DWBA calculations.展开更多
Using a cluster model based on the Woods-Saxon potential, alpha-particle decays from excited states in 24Mg have been system atically investigated. Calculations can in general reproduce experimental data, noticing the...Using a cluster model based on the Woods-Saxon potential, alpha-particle decays from excited states in 24Mg have been system atically investigated. Calculations can in general reproduce experimental data, noticing the fact that the preformation factor P of alpha particle in alpha-decaying nuclei is of order from 100 to 10?2. This can be the evidence for the α+20Ne structure in 24Mg. Meanwhile, the results also show the existence of other configurations, such as 16O+2α. Since the calculated decay widths are very sensitive to the angular momentum carried by the outgoing cluster (α particle), our results could serve as a guide to experimental spin assignments.展开更多
This work is concerned with the analyses of the shower and gray particle production in 4.5 A GeV/c 24Mg collision with emulsion nuclei. The highest particle production occurs in the region of the low impact parameters...This work is concerned with the analyses of the shower and gray particle production in 4.5 A GeV/c 24Mg collision with emulsion nuclei. The highest particle production occurs in the region of the low impact parameters. While the multiplicity of the shower particles emitted in the forward direction depends on the projectile mass number and energy, the multiplicity of the backward ones shows a limiting behaviour. The source of the emission of the forward shower particles is completely different from that of the backward ones. The target fragments are produced in a thermalized system of emission.展开更多
文摘Different interpretations are introduced to describe the uprising oscillatory structures of ^16O+^24Mg reaction. The gross resonant structures to the ground- and first-excited states have been studied successfully in terms of both the DWBA and coupled channel calculations. The DWBA results introduce a reasonable description of the angular distributions and excitation function data. The coupled channel calculations provide a better agreement with the experimental forward and backward angle data than the DWBA calculations.
基金supported by the Chinese Major State Basic Research Development Program (Grant No. 2007CB815000)the Chinese National Fund for Fostering Talent Undergraduates in Basic Science (Grant No.J0730316)+1 种基金the National Natural Science Foundation of China (Grant Nos.10735010 and 10975006)the Swedish Research Council
文摘Using a cluster model based on the Woods-Saxon potential, alpha-particle decays from excited states in 24Mg have been system atically investigated. Calculations can in general reproduce experimental data, noticing the fact that the preformation factor P of alpha particle in alpha-decaying nuclei is of order from 100 to 10?2. This can be the evidence for the α+20Ne structure in 24Mg. Meanwhile, the results also show the existence of other configurations, such as 16O+2α. Since the calculated decay widths are very sensitive to the angular momentum carried by the outgoing cluster (α particle), our results could serve as a guide to experimental spin assignments.
文摘This work is concerned with the analyses of the shower and gray particle production in 4.5 A GeV/c 24Mg collision with emulsion nuclei. The highest particle production occurs in the region of the low impact parameters. While the multiplicity of the shower particles emitted in the forward direction depends on the projectile mass number and energy, the multiplicity of the backward ones shows a limiting behaviour. The source of the emission of the forward shower particles is completely different from that of the backward ones. The target fragments are produced in a thermalized system of emission.
