Altman I S, Lee D, Song J, Choi M
National CRI Center for Nano Particle Control, Institute of Advanced Machinery and Design, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Nov;64(5 Pt 1):052202. doi: 10.1103/PhysRevE.64.052202. Epub 2001 Oct 24.
The energy accommodation coefficient (EAC), which is used to characterize gas-surface interactions, was experimentally estimated at high temperatures. A method utilizing laser irradiation to heat up nanoparticles that are generated in a flame was proposed. From the obtained dependence of particle temperature upon laser power, the EAC was derived to be approximately equal to 0.005, which agrees nicely with our recent rigorous theoretical result. It indicates that the efficiency of heat transfer between gas and particles is sufficiently small in high temperature system at large Knudsen numbers.
用于表征气体-表面相互作用的能量适应系数（EAC）在高温下通过实验进行了估算。提出了一种利用激光辐照加热火焰中产生的纳米颗粒的方法。根据所获得的颗粒温度与激光功率的依赖关系，得出EAC约等于0.005，这与我们最近的严格理论结果非常吻合。这表明在高温系统中，大克努森数下气体与颗粒之间的热传递效率足够小。
