Terahertz time-domain spectroscopy of a simulated pore structure to probe particle size and porosity

• 作 者: 董晨 宝日玛 赵昆 许长虹 金武军 钟寿仙
• 机 构: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum,Beijing K
• 出 处: Chinese Physics B
• 发表日期: 2014年12期
• 关键词: porosity terahertz rock sizes pores agreed reservoirs spectroscopic Petroleum po

The particle sizes and porosities of simulated pore structures are probed by terahertz time-domain spectroscopy.A double-peak time-domain spectrum phenomenon is observed when the terahertz(THz) pulses illuminated a pore and a particle. The amplitudes of the two peaks depend strongly and monotonically on the particle size and porosity. A model is used to study the phenomenon, and the computational results agreed with the experimental measurements. These measurements indicate the terahertz spectroscopic behaviors of pores and particles, suggesting that terahertz spectroscopy can be used as a noncontact probe of porosity.

The particle sizes and porosities of simulated pore structures are probed by terahertz time-domain spectroscopy. A double-peak time-domain spectrum phenomenon was observed when the terahertz (THz) pulses illuminated a pore and a particle. The amplitudes of the two peaks depend strongly and monotonically on the particle size and porosity. A model is used to study the phenomenon, and the computational results agreed with the experimental measurements. These measurements indicate the terahertz spectroscopic behaviors of pores and particles, suggesting that terahertz spectroscopy can be used as a noncontact probe of porosity.