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Pre-formation Probability of ^5He Cluster in Pre-equilibrium Mechanism

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Communications in Theoretical Physics 2004年第4X期42卷 587-593页

作者： duanjun-feng YANYu-Liang ZHANGJing-Shang ChinaInstituteofAtomicEnergy P.O.Box275(41)Beijing102413China

The possibility of 5He cluster emission has been affirmed theoretically. In order to describe the emission probability of 5He cluster, the pre-formation probability of 5He cluster in pre-equilibrium emission process is needed to be established. In terms of Iwamoto-Harada model, the theoretical formula of pre-formation probability of 5He cluster including 1p shell nucleon in pre-equilibrium mechanism has been established and calculated. In the case of low incident energies, the configuration of [1, m] for 5He cluster is the dominant part in the nuclear reaction. The calculated results indicate that pre-formation probability of configuration [1, m] for the unstable 5He cluster is much smaller than those of d, t, 3He, and 4He, i.e. the light stable composite particles, which are consisted of only 1s shell nucleons. However, it is propitious to the emission of 5He from the point of view on threshold energies, since the binding energies of 5He are generally lower than that of 3He in compound nucleus. The corresponding model formula has been given in this paper for described pre-formation probability of 5He cluster in pre-equilibrium mechanism.

关键词：原子核物理核反应复合粒子辐射氦束辐射费米面

Analytical Solution of Smoluchowski Equation in Harmonic Oscillator Potential

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Communications in Theoretical Physics 2005年第6期43卷 1099-1104页

作者： SUNXiao-Jun LUXiao-Xia YANYu-Liang duanjun-feng ZHANGJing-Shang ChinaInstituteofAtomicEnergy P.O.Box275（41）Beijing102413China／／CollegeofPhysicsandInformationTechnologyGuangxiNormalUniversityGuilin541004China ChinaInstituteofAtomicEnergy P.O.Box275（41）Beijing102413China

Non-equilibrium fission has been described by diffusion model. In order to describe the diffusion process analytically, the analytical solution of Smoluchowski equation in harmonic oscillator potential is obtained. This analytical solution is able to describe the probability distribution and the diffusive current with the variable x and t. The results indicate that the probability distribution and the diffusive current are relevant to the initial distribution shape, initial position, and the nuclear temperature T; the time to reach the quasi-stationary state is proportional to friction coefficient beta, but is independent of the initial distribution status and the nuclear temperature T. The prerequisites of negative diffusive current are justified. This method provides an approach to describe the diffusion process for fissile process in complicated potentials analytically.

关键词： Smoluchowski equation probability distribution diffusive current

Analysis of Neutron Double-Differential Cross Section of n＋^14N at 14.2 MeV

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Communications in Theoretical Physics 2005年第1X期44卷 128-132页

作者： YANYu-Liang duanjun-feng SUNXiao-Jun WANGJi-Min ZHANGJing-Shang ChinaInstituteofAtomicEnergy P.O.Box275(41)Beijing102413China ChinaInstituteofAtomicEnergy P.O.Box275(41)Beijing102413China//CollegeofPhysicsandInformationTechnologyGuangxiNormalUniversityGuilin541004China

By using a new reaction model for light nuclei, the double-differential cross section of n+14N reactions at En = 14.2 MeV has been analyzed. In the case of n+14N reactions, the reaction mechanism is very complex, there are over one hundred opened partial reaction channels even at incident energy En = 14.2 MeV. In this paper the opened reaction channels are listed in detail. With LUNF code the model calculation is performed to analyze the doubledifferential cross sections of total outgoing neutron. The calculated results agree fairly with the experimental data. The results indicate that the pre-equilibrium mechanism dominates the whole reaction processes, and the recoil effect in light nuclear reactions is essentially important. 5He emission has been considered, but it is only a small contribution to the double-differential cross section at incident energy En = 14.2 MeV.

关键词：核子反应双微分交叉截面轻子原子核

郭沫若历史剧在上海的舞台实践--上海剧艺社演出《孔雀胆》考述

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绵阳师范学院学报 2024年第9期43卷 77-84页

作者：冯清贵绵阳师范学院文学与历史学院四川绵阳621000

《孔雀胆》是郭沫若抗战时期创作的第五部历史剧。根据原始报刊资料还原了1946年上海剧艺社演出《孔雀胆》的具体情况。在艺术成就上,朱端钧导演的《孔雀胆》情调幽美,既体现了郭沫若历史剧的诗化风格,又对演剧的民族化进行了有益探索... 详细信息

《孔雀胆》是郭沫若抗战时期创作的第五部历史剧。根据原始报刊资料还原了1946年上海剧艺社演出《孔雀胆》的具体情况。在艺术成就上,朱端钧导演的《孔雀胆》情调幽美,既体现了郭沫若历史剧的诗化风格,又对演剧的民族化进行了有益探索。在社会影响上,《孔雀胆》的演出,受到了社会各界的普遍赞誉,表达了中国民众对于光明与正义的热烈期盼。

关键词：上海剧艺社《孔雀胆》演出考述