刚体平衡的教学设计

本文以“刚体的平衡条件”为例,将案例教学的思想方法引入物理课程的教学中,论述在物理教学中如 何使学生从具体的案例出发经过思考、分析、建立物理模型、应用基本理论,得到可能的解决方案,并提炼理论,同 时,将物理课堂进行拓展与延伸.     

Symmetry energy from neutron-rich fragments in heavy-ion collisions, and its dependence on incident energy, and impact parameters

The yields of fragments produced in the 60Ni+ 12C reactions at 80 A and 140 A MeV, and with maximum impact parameters of 1.5, 2 and 7.3 fm at 80 A MeV are calculated by the statistical abrasion-ablation model. The yields of fragments are analyzed by the isobaric yield ratio (IYR) method to extract the coefficient of symmetry energy to temperature (asym/T ). The incident energy is found to influence asym/T very little. It’s found that asym/T of fragments with the same neutron-excess I = N-Z increases when A increases, while asym/T of isobars decreases when A increases. The asym/T of prefragments is rather smaller than that of the final fragments, and the asym/T of fragments in small impact parameters is smaller than that of the larger impact parameters, which both indicate that asym/T decreases when the temperature increases. The choice of the reference IYRs is found to have influence on the extracted a sym /T of fragments, especially on the results of the more neutron-rich fragments. The surface-symmetry energy coefficient (bs/T ) and the volume-symmetry energy coefficient (bv/T) are also extracted, and the bs/bv is found to coincide with the theoretical results.     

大学物理教学中激发学生学习兴趣的方法和体会

探讨了在大学物理教学中,如何适时、适当地运用思路提示、列举生活实例和介绍科研前沿等方法,激发学生学习物理知识的兴趣,使学生更好地掌握物理知识,提高大学物理教学质量.     

中高能重离子碰撞中的电磁场效应和手征反常现象

重离子碰撞可以产生极强的电磁场和高温高密量子色动力学(QCD)物质,诱导很多重要手征反常现象,例如手征磁效应和手征磁波.本文围绕手征反常现象中的诸多物理要素,详细介绍包括相对论重离子碰撞中不同碰撞系统和能量下的电磁场特性、同质异位素碰撞中寻找手征磁效应、手征磁波特性、中低能重离子碰撞中磁场效应等一系列与电磁场和手征反常现象相关的理论研究成果.相关研究有助于实验中寻找强相互作用中的电荷宇称(CP)破缺的证据,加深对QCD真空涨落和宇宙中正反物质不对称问题的理解.     

农林专业量子力学知识的教学尝试

讨论了在农林专业如何进行量子力学教学的问题,认为用理论背后的故事来激发学生求知欲望,感染教育学生;使用类比方法提高学生思维能力;在教学中强调量子力学与经典力学的比较,让学生弄清量子力学研究的内容.