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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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![عکس صفحه اول مقاله: Dissociation and ionization of molecular ions by ultra-short intense laser pulses probed by coincidence 3D momentum imaging Dissociation and ionization of molecular ions by ultra-short intense laser pulses probed by coincidence 3D momentum imaging](/preview/png/9818030.png)
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 (4-8Â keV) is crossed by an ultrafast intense laser beam (28-200Â fs, 1013-1014Â 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+Â +Â 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+Â +Â 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 1â4, May 2005, Pages 56-61
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 233, Issues 1â4, May 2005, Pages 56-61
نویسندگان
Itzik Ben-Itzhak, Pengqian Wang, Jiangfan Xia, A. Max Sayler, Mark A. Smith, J.W. Maseberg, Kevin D. Carnes, Brett D. Esry,