New electromagnetic properties of collective excitations (A07)

集体激励的新电磁特性（A07）

• 批准号: 289455911
• 金额: --
• 依托单位: Institut für Kernphysik
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/289455911?language=en
• 关键词: New; electromagnetic; properties; collective; excitations

The project will establish a new experimental technique for nuclear structure spectroscopy in electron-gamma-ray coincidence measurements using large-volume LaBr-scintillators for the first time. New and largely unexplored electromagnetic properties of collective nuclear excitations, namely the transversal and longitudinal components of low-lying electric dipole-excited states and the gamma-decay pattern of the nuclear giant dipole resonance, will be studied in the key nuclei 140Ce und 154Sm, respectively. The new data will test phenomenological nuclear models and challenge ab initio nuclear structure calculations.

该项目将首次建立一种使用大容量实验室闪烁体进行电子-伽马射线符合测量中的核结构光谱的新实验技术。在关键核140Ce和154Sm中，将分别研究集体核激发的新的和大部分未被探索的电磁性质，即低能级电偶极激发态的横向和纵向分量以及核巨偶极共振的伽马衰变图样。新数据将检验唯象核模型，挑战从头算核结构计算。