Laser-based mass spectrometry of fullerenes and their compounds
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:127753
- Argonne National Lab., IL (United States); and others
Advanced mass spectrometry is used to study C{sub 60}, related carbon clusters named fullerenes, and metallofullerenes. For analysis, the authors rely on laser desorption/laser ionization. Pulsed laser beams (532 nm and 266 nm) are used for desorption of sample material adsorbed on a stainless steel substrate. Postionization of the desorbed neutral flux of molecules is investigated at various wavelengths to optimize the ionization process and minimize the concurrent fragmentation and delayed ionization processes. The applied postionization wavelengths range from 532 nm down to 118 nm. The 118 nm vacuum ultraviolet (VUV) radiation is generated by nonresonant four-wave mixing. In addition, the authors also use a difference mixing scheme, which not only provides tunability in the VUV range, but also at least an order of magnitude more intensity. Additionally, this VUV radiation allows postionization of neutral species following fragmentation by a laser with a longer wavelength (three-laser experiment), thus the neutral fragments resulting from photofragmentation can also be studied.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 127753
- Report Number(s):
- CONF-920376--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 37; ISSN 0003-0503; ISSN BAPSA6
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laser Desorption Postionization Mass Spectrometry of Antibiotic-Treated Bacterial Biofilms using Tunable Vacuum Ultraviolet Radiation
Comparing Vacuum and Extreme Ultraviolet Radiation for Postionization of Laser Desorbed Neutrals from Bacterial Biofilms and Organic Fullerene
Desorption Dynamics, Internal Energies and Imaging of Organic Molecules from Surfaces with Laser Desorption and Vacuum Ultraviolet (VUV) Photoionization
Journal Article
·
Wed Aug 04 00:00:00 EDT 2010
· Analytical Chemistry
·
OSTI ID:991035
Comparing Vacuum and Extreme Ultraviolet Radiation for Postionization of Laser Desorbed Neutrals from Bacterial Biofilms and Organic Fullerene
Conference
·
Tue Dec 07 23:00:00 EST 2010
·
OSTI ID:1006396
Desorption Dynamics, Internal Energies and Imaging of Organic Molecules from Surfaces with Laser Desorption and Vacuum Ultraviolet (VUV) Photoionization
Journal Article
·
Tue Apr 05 00:00:00 EDT 2011
· Chemistry an Asian Journal
·
OSTI ID:1023405