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本文探讨了总结合能Λ′、结合能（升华能）Λ和有效结合能Λｅｆｆ，与扫描隧道显微镜（ＳＴＭ）场蒸发的关系。计算表明，随着探针样品间距ｄ减小，Λｅｆｆ迅速减小，而Λ′不断增加。相应地采用Λｅｆｆ计算的蒸发场强随着ｄ减小而迅速减小，且能给出与实验相吻合的结果。而采用Λ′计算的蒸发场强随着ｄ减小会出现一个峰值，该峰值超过当ｄ为无穷大时的蒸发场强，明显与实验矛盾。当使用Λ时，蒸发场强随着ｄ减小变化缓慢，而且高出实验测量值几倍。本文认为在ＳＴＭ场蒸发中真正起作用的是有效结合能Λｅｆｆ。
In this paper, we discuss the relationship between the energy Λ ’, the binding energy (sublimation energy) Λ and the effective binding energy Λeff, and the evaporation of the scanning tunneling microscope (STM) field. Calculations show that as probe spacing d decreases, Δeff decreases rapidly and ΔΛ increases. Correspondingly, the evapotranspiration field calculated using Λeff decreases rapidly with decreasing d, and the experimental results are given. However, the evapotranspiration calculated by Λ ’shows a peak value as d decreases, which exceeds the evaporating field intensity when d is infinite, which obviously contradicts the experiment. When Λ is used, the evaporation intensity changes slowly as d decreases, and is several times higher than the experimental measurements. This paper argues that what really works in the STM field evaporation is the effective binding energy Λeff.