FOM Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, Trilateral Euregio Cluster, Edisonbaan 14, Nieuwegein, The Netherlands.
Phys Chem Chem Phys. 2010 Nov 14;12(42):14067-75. doi: 10.1039/c0cp00637h. Epub 2010 Sep 22.
In this study we investigate how the hydrogen flux administered to amorphous hydrogenated carbon (a-C : H) samples influences the sticking probability of hydrocarbon radicals on these samples. We bombard a-C : H samples that were previously subjected to different hydrogen fluxes with hydrocarbon radicals. The energy of the radicals is 10 eV. The sample temperatures are 700 and 1000 K. The results show that the sticking probability is larger on samples pre-irradiated with a higher hydrogen flux caused by the higher sp(2) fraction in the sample. This suggests that redeposition can contribute to the observed flux dependency of the carbon erosion yield.
在这项研究中，我们研究了施加到非晶氢化碳 (a-C:H) 样品上的氢通量如何影响烃自由基在这些样品上的附着概率。我们用烃自由基轰击先前受到不同氢通量辐照的 a-C:H 样品。自由基的能量为 10 eV。样品温度为 700 和 1000 K。结果表明，由于样品中 sp(2) 分数较高，在前一个较高氢通量辐照下的样品上，附着概率更大。这表明再沉积可能导致观察到的碳侵蚀产额对通量的依赖性。
