کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1686598 | 1010604 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
X-ray absorption fine structure and photon-stimulated ion desorption from solid MoO3 at molybdenum 3p1/2, 3p3/2 and oxygen 1s edges
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We investigated photon-stimulated ion desorption (PSID) from solid MoO3 following Mo 3p1/2, 3p3/2 and O 1s inner-shell excitations. The photon-energy dependences of O+ ion desorption yields were measured using quadrupole mass spectrometry. Near-edge X-ray absorption fine structure (NEXAFS) spectra were measured by the total electron yield method and were compared with the desorption yield curves. Relatively high desorption yields were observed in O 1s â eg resonance compared with that in O 1s â t2g resonance, while no enhanced yields were observed in either the Mo 3p1/2 or Mo 3p3/2 edge. The enhancement effect in the O 1s â eg resonance was attributed to fast bond breakage induced by the antibonding nature of the Ïâ-like eg orbital. On the other hand, the non-enhancement following the Mo 3p1/2 and 3p3/2 edges was ascribed to the de-excitation of the excited electrons via very fast Coster-Kronig transitions, which can take place only following Mo 3p1/2 and 3p3/2 excitations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 245, Issue 2, April 2006, Pages 406-410
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 245, Issue 2, April 2006, Pages 406-410
نویسندگان
Guohua Wu, Tetsuhiro Sekiguchi, Yuji Baba, Iwao Shimoyama,