fulltext.study @t Gmail

Multiphoton ionization and dissociation of naphthalene at 266, 355, and 532 nm

Paper ID Volume ID Publish Year Pages File Format Full-Text
28877 44102 2010 7 PDF Available
Title
Multiphoton ionization and dissociation of naphthalene at 266, 355, and 532 nm
Abstract

A comparison of laser-induced multiphoton ionization/dissociation and dissociation/ionization pathways of naphthalene, C10H8, is presented at 266, 355, 532 nm, using time-of-flight mass spectrometry, ToF-MS. From the spectra several processes were identified: molecular ionization, simple dissociation, hydrogen transposition, hydrogen loss, and total deprotonation. The dependence on the wavelength and the radiation intensity is clear. At 266 nm energies per pulse, <1.0 mJ (9.23 × 102 MW cm−2), C10H8+ dominates the spectra and new ions were observed as the laser intensity was increased. At 355 nm, hydrogen loss was the principal dissociative route, with the formation of low mass ions: CHn+, 0 < n < 6, in particular CH6 was identified by isotopic analysis. At 532 nm, the CnHm+ ions, 2 < n < 5, were the most abundant species. The calculated numbers of absorbed photons along with previous calculations were used to propose different fragmentation channels.

Keywords
Naphthalene; PAHs; Photoionization; Photodissociation; Time-of-flight mass spectrometry
First Page Preview
Multiphoton ionization and dissociation of naphthalene at 266, 355, and 532 nm
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 215, Issues 2–3, 25 September 2010, Pages 140–146
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us