Temperature-Dependent Far-Infrared Absorption in Cyclotrimethylene Trinitramine Single Crystals Using Broadband Time-Domain Terahertz Spectroscopy

• 作者: Yupeng Liu Jinchun Shi Chongyang Chen
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY
• 页码范围: 66-77
• 页数: 12页
• 语种: 英文
• DOI: 10.1088/0256-307X/39/1/018701

摘要

We investigate the absorption properties of cyclotrimethylene trinitramine (RDX) single crystals from ～15 to 150 cm-1 using the terahertz time-domain spectroscopy.We observe that all the absorption modes exhibit strong anisotropic behavior in terms of the crystal orientations.We demonstrate that the anharmonic phonon model can well describe the temperature-dependent behaviors of these absorption modes.These results indicate that the intermolecular interaction plays a major role in the collective motion of large number of RDX molecules.Our findings provide important information for understanding and controlling the dynamic properties in the explosive materials.