The method of measuring the lifetime has been used to investigate the kinetics of spontaneousboiling-up of superheated xenon in copper tubes. In experiments the temperature dependence of themean lifetime has been determined at pressures of 1.48 and 1.98 MPa. The data obtained have beencompared with homogeneous nucleation theory. It has been found that experimental values of theattainable superheating temperature and the derivative (e In J/ eT)_pare systematically lower thantheir theoretical values. A description of experimental data in the framework of heterogeneousnucleation theory has shown that for the agreement of theory and experiment with the use of amacroscopic model of nucleation on a smooth surface it is necessary to take the value of theequilibrium contact angle θ_0equal to 70°, which is not a characteristic for xenon-metal system.Taking into account the contribution of the energy of the three-phase contact solid wall-liquid-gasin a microscopic nucleation model makes it possible to reconcile heterogeneous nucleation theoryand experimental data at a contact angle θ_0close to zero, with the linear tension taken equal to–6 X 10~(-12)J/m and the microscopic contactangle θ_*=57°. The number of weakened sites, onwhich bubbles may form, is always smaller than the number of molecules adjacent to the solidwall
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机译：测量寿命的方法已用于研究铜管中过热氙自发沸腾的动力学。在实验中，已经确定了在1.48和1.98 MPa的压力下，主题烷寿命的温度依赖性。获得的数据已与均相成核理论进行了比较。已经发现，可达到的过热温度和导数（e In J / eT）_par的实验值系统地低于其理论值。在异质成核理论框架内对实验数据的描述表明，为使理论和实验相一致，使用在光学表面上使用微镜下成核模型，必须将平衡接触角θ_0的值等于70°，这不是氙金属体系的特征。考虑到三相接触固体壁-液-气在微观成核模型中的能量贡献，使得有可能在接触角θ_0接近于零，线性张力等于–6 X 10〜（-12）J / m，微观接触角θ_ * = 57°。可能在其上形成气泡的弱化部位的数量总是小于与固壁相邻的分子的数量
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