Two-directional N2 desorption in thermal dissociation of N2O on Rh(110), Ir(110), and Pd(110) at low temperatures
Two-directional N2 desorption in thermal dissociation of N2O on Rh(110), Ir(110), and Pd(110) at low temperatures
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低温下 N2O 在 Rh(110)、Ir(110) 和 Pd(110) 上热离解的双向 N2 解吸
DOI：
10.1116/1.1495507
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
T. Matsushima
中科院分区：
文献类型：
--
作者：
H. Horino;I. Rzeznicka;A. Kokalj;I. Kobal;Y. Ohno;A. Hiratsuka;T. Matsushima
在160 K以下，在Rh（110）、Ir（110）和Pd（110）上，通过角分辨热解吸，发现了N2O解离的双向N2解吸。N2O(a)在加热过程中大部分解离，释放N2(g)并留下O(a)。N2在110 ~ 200 K范围内有4个解吸峰。其中一个通常表现为余弦分布，而其他的则沿着[001]方向在平面上的表面法线急剧准直。准直角在Rh（110）上约为70°，在Ir（110）上约为65°，在Pd（110）上约为43°-50°。提出了N2倾斜发射的高能原子辅助解吸模型。
Two-directional N2 desorption was found in N2O dissociation on Rh(110), Ir(110), and Pd(110) below 160 K by angle-resolved thermal desorption. N2O(a) is mostly dissociated during heating procedures, emitting N2(g) and leaving O(a). N2 showed four desorption peaks in the temperature range of 110–200 K. One of them commonly showed a cosine distribution, whereas the others sharply collimated off the surface normal in the plane along the [001] direction. The collimation angle was about 70° on Rh(110), 65° on Ir(110), and 43°–50° on Pd(110). A high-energy-atom assisted desorption model was proposed for N2 inclined emission.