›› 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

Pressure-dependent terahertz optical characterization of heptafluoropropane

冷文秀a b, 戈立娜c, 徐山森d, 詹洪磊c, 赵昆a b c   

  1. a State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
    b Key Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF), Beijing 100723, China;
    c Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, China;
    d Xi'an Polytechnic University, Xi'an 710048, China
  • 收稿日期:2014-07-11 修回日期:2014-08-20 出版日期:2014-10-15 发布日期:2014-10-15
  • 基金资助:
    Project supported by the National Key Basic Research Program of China (Grant No. 2014CB744300), the Specially Funded Program on National Key Scientific Instruments and Equipment Development, China (Grant No. 2012YQ140005), and the Beijing Natural Science Foundation (Grant No. 4122064).

Pressure-dependent terahertz optical characterization of heptafluoropropane

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   

  1. a State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
    b Key Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF), Beijing 100723, China;
    c Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, China;
    d Xi'an Polytechnic University, Xi'an 710048, China
  • Received:2014-07-11 Revised:2014-08-20 Online:2014-10-15 Published:2014-10-15
  • Contact: Zhao Kun E-mail:zhk@cup.edu.cn
  • About author:78.47.D-; 42.87.-d; 78.20.Ci
  • Supported by:
    Project supported by the National Key Basic Research Program of China (Grant No. 2014CB744300), the Specially Funded Program on National Key Scientific Instruments and Equipment Development, China (Grant No. 2012YQ140005), and the Beijing Natural Science Foundation (Grant No. 4122064).

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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.

关键词: optical constant, heptafluoropropane, terahertz, pressure

Abstract: 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.

Key words: optical constant, heptafluoropropane, terahertz, pressure

中图分类号:  (Time resolved spectroscopy (>1 psec))

  • 78.47.D-
42.87.-d (Optical testing techniques) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))