THE THERMAL ROUGHENING OF LIQUID SURFACES AND ITS EFFECT ON GAS-LIQUID COLLISIONS
THE THERMAL ROUGHENING OF LIQUID SURFACES AND ITS EFFECT ON GAS-LIQUID COLLISIONS
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DOI：
10.1063/1.467693
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发表时间：
1994-08-01
影响因子：
4.4
通讯作者：
NATHANSON, GM
中科院分区：
文献类型：
--
作者：
KING, ME;SAECKER, ME;NATHANSON, GM
碰撞的惰性气体与全氟液体在85 K的范围内揭示了气体-液体的能量转移取决于液体的温度。在较高的温度下，热住宿的冲击氖，氩，和氘原子的增长在迅速的非弹性散射的代价。实验表明，较热的液体具有较粗糙的表面，这会促进多次碰撞，从而耗散原子的入射能量，并可能暂时将气体困在表面分子不相称的堆积所产生的间隙中。在高能量脉冲碰撞过程中转移的能量的分数几乎保持不变的液体的温度的变化，这意味着在散射平面内的脉冲遇到的主要是由单一的碰撞事件。
Collisions of-inert gases with a perfluorinated liquid over an 85 K range reveal how gas-liquid energy transfer depends on the temperature of the liquid. At higher temperatures, thermal accommodation of impinging Ne, Ar, and Xe atoms grows at the expense of prompt inelastic scattering. The experiments suggest that hotter liquids possess rougher surfaces, which promote multiple collisions that dissipate the atom's incident energy and which may momentarily trap gases in gaps created by incommensurate packing of the surface molecules. The fraction of energy transferred during a high energy impulsive collision remains almost unaltered by changes in the liquid's temperature, implying that impulsive encounters within the scattering plane are dominated by single collision events.