The nuclear data of n+^(240;242;244)Pu reactions for incident energy below 200 MeV are calculated and evaluated to meet the requirement in the design of an accelerator-driven subcritical system. The optical model is u...The nuclear data of n+^(240;242;244)Pu reactions for incident energy below 200 MeV are calculated and evaluated to meet the requirement in the design of an accelerator-driven subcritical system. The optical model is used to calculate the total, nonelastic, shape elastic cross sections, shape elastic scattering angular distributions, and transmission coefficients. The distorted-wave Born approximation is applied to calculate the direct inelastic scatterings to the discrete excited states. The nuclear reaction statistical models and fission theory are applied to describe neutron, proton, deuteron, triton, helium-3, alpha and c emissions, and fission consistently. The results thus obtained are compared with experimental data and the evaluated data obtained from ENDF/B-VII.1 and JENDL-4.0.展开更多
Two novel quadrupolar organic compounds, 3-(4-((E)-2-(9-butyl-9H-carbazol-6-yl) vinyl)styryl)-9-propyl-9H-carbazole (BCSPC) and 3-(3-(3-((1E)-2-(4-((E)-2-(3-(3,5-bis(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazo...Two novel quadrupolar organic compounds, 3-(4-((E)-2-(9-butyl-9H-carbazol-6-yl) vinyl)styryl)-9-propyl-9H-carbazole (BCSPC) and 3-(3-(3-((1E)-2-(4-((E)-2-(3-(3,5-bis(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazol-6-yl)vinyl)phenyl) vinyl)-9-butyl-9H-carbazol-6-yl)-5-(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazole (BCPBC), with different conjugated arms, have been designed and synthesized. Their one-and two-photon absorption (TPA) and excited fluorescence properties have been experimentally investigated. The two-photon absorption cross-sections of two compounds were estimated by two-photon excited fluorescence technique using 200 fs, 76 MHz, Ti:sapphire laser, which are 22 and 154 GM for BCSPC and BCPBC, respectively. The optimal excitation wavelengths are 780 nm for both BCSPC and BCPBC. A data recording experiment proved the potential application of the materials.展开更多
现有通用电力系统仿真软件自动化和智能化程度不高的问题极大影响了安全稳定分析工作的效率。为此,从工程技术人员的实际需求出发,基于电力系统分析综合程序(power system analysis software package,PSASP)设计并开发了电网智能仿真计...现有通用电力系统仿真软件自动化和智能化程度不高的问题极大影响了安全稳定分析工作的效率。为此,从工程技术人员的实际需求出发,基于电力系统分析综合程序(power system analysis software package,PSASP)设计并开发了电网智能仿真计算工具。该工具通过从数据解析与处理、计算功能优化、结果分析自动化3个方面对现有软件进行了优化,提升工作效率。引入达梦数据库系统,实现海量数据的存储、计算、查询和共享。开发了厂站接线图自动绘制功能,可自动实现元件连接关系的可视化展示。开发了运行方式数据自动生成功能,可形成对应海量运行场景的潮流作业数据。开发了静态安全自动分析功能,可进行N-1开断的自动计算和结果的智能分析与展示。最后,以华中电网安全稳定分析为例,验证了智能仿真工具的实用效果。展开更多
基金supported by the National Natural Science Foundation of China-NSAF(No.U1630122)IAEA Coordinated Research Projects(CRPs)on Recommended Input Parameter Library(RIPL)for Fission Cross Section Calculations(No.20464)
文摘The nuclear data of n+^(240;242;244)Pu reactions for incident energy below 200 MeV are calculated and evaluated to meet the requirement in the design of an accelerator-driven subcritical system. The optical model is used to calculate the total, nonelastic, shape elastic cross sections, shape elastic scattering angular distributions, and transmission coefficients. The distorted-wave Born approximation is applied to calculate the direct inelastic scatterings to the discrete excited states. The nuclear reaction statistical models and fission theory are applied to describe neutron, proton, deuteron, triton, helium-3, alpha and c emissions, and fission consistently. The results thus obtained are compared with experimental data and the evaluated data obtained from ENDF/B-VII.1 and JENDL-4.0.
基金supported by the National Natural Science Foundation of China (Grant Nos. 50532030, 20771001, 20775001 and 50873001)the National Natural Science Foundation of Anhui Province (Grant No. 070414188)the Foundation of Scientific Innovation Team of Anhui Province (Grant No. 2006KJ007TD)
文摘Two novel quadrupolar organic compounds, 3-(4-((E)-2-(9-butyl-9H-carbazol-6-yl) vinyl)styryl)-9-propyl-9H-carbazole (BCSPC) and 3-(3-(3-((1E)-2-(4-((E)-2-(3-(3,5-bis(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazol-6-yl)vinyl)phenyl) vinyl)-9-butyl-9H-carbazol-6-yl)-5-(9-butyl-9H-carbazol-6-yl)phenyl)-9-butyl-9H-carbazole (BCPBC), with different conjugated arms, have been designed and synthesized. Their one-and two-photon absorption (TPA) and excited fluorescence properties have been experimentally investigated. The two-photon absorption cross-sections of two compounds were estimated by two-photon excited fluorescence technique using 200 fs, 76 MHz, Ti:sapphire laser, which are 22 and 154 GM for BCSPC and BCPBC, respectively. The optimal excitation wavelengths are 780 nm for both BCSPC and BCPBC. A data recording experiment proved the potential application of the materials.
文摘现有通用电力系统仿真软件自动化和智能化程度不高的问题极大影响了安全稳定分析工作的效率。为此,从工程技术人员的实际需求出发,基于电力系统分析综合程序(power system analysis software package,PSASP)设计并开发了电网智能仿真计算工具。该工具通过从数据解析与处理、计算功能优化、结果分析自动化3个方面对现有软件进行了优化,提升工作效率。引入达梦数据库系统,实现海量数据的存储、计算、查询和共享。开发了厂站接线图自动绘制功能,可自动实现元件连接关系的可视化展示。开发了运行方式数据自动生成功能,可形成对应海量运行场景的潮流作业数据。开发了静态安全自动分析功能,可进行N-1开断的自动计算和结果的智能分析与展示。最后,以华中电网安全稳定分析为例,验证了智能仿真工具的实用效果。
