کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9818030 1518775 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissociation and ionization of molecular ions by ultra-short intense laser pulses probed by coincidence 3D momentum imaging
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Dissociation and ionization of molecular ions by ultra-short intense laser pulses probed by coincidence 3D momentum imaging
چکیده انگلیسی
We have experimentally explored laser-induced dissociation and ionization of diatomic molecular ions using coincidence 3D momentum imaging. The vibrationally excited molecular ion beam (4-8 keV) is crossed by an ultrafast intense laser beam (28-200 fs, 1013-1014 W/cm2). The resulting fragments are recorded in coincidence by a time and position-sensitive detector. Complete angular distributions and kinetic energy release maps are reconstructed from the measured dissociation-momentum vectors. The angular distribution of the H+ + H fragments was found to be strongly correlated to their kinetic energy release upon dissociation. Low KER was associated with very narrow angular distributions and high KER with distributions peaking away from the laser polarization. Ionization was found to be smaller than dissociation and increased with laser intensity. The H+ + H+ fragments have a very narrow angular distribution along the laser polarization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 233, Issues 1–4, May 2005, Pages 56-61
نویسندگان
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