Reflection of clusters of helium, hydrogen, and nitrogen as function of the reflector temperature
Reflection of clusters of helium, hydrogen, and nitrogen as function of the reflector temperature
复制标题
氦、氢和氮簇的反射随反射器温度的变化
DOI：
10.1063/1.1681697
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发表时间：
1974
影响因子：
4.4
通讯作者：
G. Krieg
中科院分区：
文献类型：
--
作者：
J. Gspann;G. Krieg
氦、氢和氮的团簇在80 - 550 K的温度范围内反射到抛光的不锈钢板上。通过飞行时间质谱法测量，入射团簇平均包含约1.5×105个氦原子或氢分子或104个氮分子。反射团簇光束的平均尺寸、速度和分子强度的角分布表明，在反射镜温度的研究范围内，氦团簇的反射对应于较高反射镜温度下的氢团簇反射，而氮团簇反射对应于较低反射镜温度下的氢团簇反射。氢原子团簇观察到的反射的两个制度之间的过渡是由一个最佳的反射器温度导致的反射光束的最大强度，最小的集群材料的损失，和一个不同的角度分离的入射集群大小…
Clusters of helium, hydrogen, and nitrogen are reflected at a polished stainless steel plate at temperatures ranging from 80 to 550 K. The incident clusters contain on the average about 1.5×105 atoms of helium or molecules of hydrogen or 104 molecules of nitrogen, as measured by time‐of‐flight mass spectrometry. The angular distributions of the average sizes, the velocities, and the molecular intensities of the reflected cluster beams show that in the investigated range of reflector temperatures the reflection of the helium clusters corresponds to the hydrogen cluster reflection at higher reflector temperatures while the nitrogen cluster reflection corresponds to the hydrogen cluster reflection at lower reflector temperatures. The transition between the two regimes of reflection as observed with hydrogen clusters is marked by an optimum reflector temperature leading to a maximum intensity of the reflected beam, a minimum loss of clustered material, and a distinct angular separation of incident cluster siz...