کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5375897 | 1504311 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Statistical versus non-statistical photo-fragmentation of protonated GWG tri-peptide induced by UV excitation
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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![عکس صفحه اول مقاله: Statistical versus non-statistical photo-fragmentation of protonated GWG tri-peptide induced by UV excitation Statistical versus non-statistical photo-fragmentation of protonated GWG tri-peptide induced by UV excitation](/preview/png/5375897.png)
چکیده انگلیسی
A new experimental method is described in which photo-induced fragmentation of protonated molecules in an electric field is investigated by the detection in coincidence of the ion and neutral fragments. This technique allows measuring fragmentation times, in the tens of nanosecond range, for each fragmentation channel independently. As an example, the method has been used to study the photo-fragmentation of the protonated tri-peptide GWG. It is shown that the various fragmentation channels have different fragmentation times. This is a clear signature of non-ergodic mechanisms occurring during fragmentation of such a large molecule.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 347, Issues 1â3, 23 May 2008, Pages 324-330
Journal: Chemical Physics - Volume 347, Issues 1â3, 23 May 2008, Pages 324-330
نویسندگان
B. Lucas, M. Barat, J.A. Fayeton, C. Jouvet, P. Ãarçabal, G. Grégoire,