کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9595108 | 1507966 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetic energy distribution of H+ desorbed by core-level excitations of condensed ammonia using a miniature cylindrical mirror analyzer (CMA)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Kinetic energy distribution of H+ desorbed by core-level excitations of condensed ammonia using a miniature cylindrical mirror analyzer (CMA) Kinetic energy distribution of H+ desorbed by core-level excitations of condensed ammonia using a miniature cylindrical mirror analyzer (CMA)](/preview/png/9595108.png)
چکیده انگلیسی
We have developed a miniature cylindrical mirror analyzer (CMA) mounted on a 70-mm-diameter conflat flange for measurements of kinetic energy distribution of ions desorbed in the polar angles of 24°-28° from the surface normal. The acceptance solid angle is 0.16 sr and the energy resolution (FWHM) is estimated as E/ÎE = 20. We have applied it for measurements of kinetic energy distributions of ions desorbed from condensed ammonia (NH3) at the surface 4a1 â N 1s resonant transition (hν = 400.7 eV) and at N 1s ionization (hν = 412.5 eV). The results support the two H+ desorption mechanisms proposed previously, that is, a four-step mechanism involving ultrafast H2N-H extension within the lifetime of the N 1s core hole at 4a1 â N 1s, and a normal Auger stimulated ion desorption mechanism at N 1s ionization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 593, Issues 1â3, 20 November 2005, Pages 291-296
Journal: Surface Science - Volume 593, Issues 1â3, 20 November 2005, Pages 291-296
نویسندگان
Eiichi Kobayashi, Akira Nambu, Kazuhiko Mase,