The onset of coulomb explosions in polyatomic molecules
Φόρτωση...
Ημερομηνία
Συγγραφείς
Smith, D. J.
Ledingham, K. W. D.
Singhal, R. P.
McCanny, T.
Graham, P.
Kilic, H. S.
Tzallas, P.
Kosmidis, C.
Langley, A. J.
Taday, P. F.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Rapid Communications in Mass Spectrometry
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
With the development of high intensity femtosecond lasers, the ionisation and dissociation dynamics. of molecules has become an area of considerable interest. Using the technique of femtosecond laser mass spectrometry (FLMS), the molecules carbon disulphide, pyrimidine, toluene, cyclohexanone and benzaldehyde are studied with pulse widths of 50 fs in the near infrared (IR) wavelength region (790 mm), Results are presented and contrasted for laser beam intensifies around 10(15) and 10(16) W cm(-2). For the lower intensities, the mass spectra yield dominant singly charged parent ions. Additionally, the appearance of doubly charged parent ions is evident for carbon disulphide, toluene and benzaldehyde with envelopes of doubly charged satellite species existing in these local regions. Carbon disulphide also reveals a small triply charged component, Such atomic-like features are thought to be a strong fingerprint of FLMS at these intensities, However, upon increasing the laser intensity to similar to 10(16) W cm(-2), parent ion dominance decreases and the appearance of multiply charged atomic species occurs, particularly carbon. This phenomenon has been attributed to Coulomb explosions in which the fast absorption of many photons may produce transient highly ionised parent species which can subsequently blow apart. Copyright (C) 1999 John Wiley & Sons, Ltd.
Περιγραφή
Λέξεις-κλειδιά
intense laser fields, multielectron-dissociative-ionization, induced multiple ionization, multiphoton ionization, femtosecond laser, mass-spectrometry, enhanced ionization, diatomic-molecules, pulses, ions
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000081521900004
http://onlinelibrary.wiley.com/store/10.1002/(SICI)1097-0231(19990730)13:14<1366::AID-RCM644>3.0.CO;2-3/asset/644_ftp.pdf?v=1&t=h0xph67h&s=5908d32310276dc5d1054c0d0f64a4563aa029c2
http://onlinelibrary.wiley.com/store/10.1002/(SICI)1097-0231(19990730)13:14<1366::AID-RCM644>3.0.CO;2-3/asset/644_ftp.pdf?v=1&t=h0xph67h&s=5908d32310276dc5d1054c0d0f64a4563aa029c2
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών