›› 2014, Vol. 23 ›› Issue (10): 107804-107804.doi: 10.1088/1674-1056/23/10/107804
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
冷文秀a b, 戈立娜c, 徐山森d, 詹洪磊c, 赵昆a b c
Leng Wen-Xiu (冷文秀)a b, Ge Li-Na (戈立娜)c, Xu Shan-Sen (徐山森)d, Zhan Hong-Lei (詹洪磊)c, Zhao Kun (赵昆)a b c
摘要: Heptafluoropropane (HFP), as the best alternative to halon fire-suppression agents, is now a widely used fire extinguishing agent. The current studies of HFP, concentrating on the extinguishing mechanisms of flames and decomposition products, in general deal with the destructive and high temperature cases. In this paper, terahertz time-domain spectra are used to characterize HFP at different pressures. Optical parameters of HFP, such as absorption coefficient, refractive index, and relative permittivity, and their relationship with concentration of samples, are discussed. The absorption peak of HFP at 0.3 THz depends strongly on the applied pressure, and the corresponding parameters increase almost linearly with increasing HFP concentration. The present study lays a foundation for future extensive applications.
中图分类号: (Time resolved spectroscopy (>1 psec))