Application of a static quadrupole deviator to the deposition of size-selected cluster ions from a laser vaporization source

2004 ◽  
Vol 75 (7) ◽  
pp. 2461-2470 ◽  
Author(s):  
R. Alayan ◽  
L. Arnaud ◽  
A. Bourgey ◽  
M. Broyer ◽  
E. Cottancin ◽  
...  
Keyword(s):  
Cluster Ions ◽  
Laser Vaporization ◽  
Static Quadrupole

FTMS studies of mass-selected, large cluster ions produced by direct laser vaporization

1987 ◽  
Vol 134 (3) ◽  
pp. 214-219 ◽  
Author(s):  
Stephen W McElvany ◽  
H.H Nelson ◽  
Andrew P Baronavski ◽  
Clifford H Watson ◽  
John R Eyler
Keyword(s):  
Large Cluster ◽  
Cluster Ions ◽  
Laser Vaporization ◽  
Direct Laser

Production of ?cold/hot? metal cluster ions: a modified laser vaporization source

1991 ◽  
Vol 20 (1-4) ◽  
pp. 411-412 ◽  
Author(s):  
H. Weidele ◽  
U. Frenzel ◽  
T. Leisner ◽  
D. Kreisle
Keyword(s):  
Metal Cluster ◽  
Cluster Ions ◽  
Laser Vaporization ◽  
Hot Metal

Generation of ArnH3+ cluster ions by laser vaporization and their black-body radiation induced dissociation

2004 ◽  
Vol 6 (6) ◽  
pp. 1128 ◽  
Author(s):  
Martin K. Beyer ◽  
Elena V. Savchenko ◽  
O. Petru Balaj ◽  
Iulia Balteanu ◽  
Brigitte S. Fox-Beyer ◽  
...  
Keyword(s):  
Black Body ◽  
Black Body Radiation ◽  
Cluster Ions ◽  
Laser Vaporization ◽  
Radiation Induced

Raman Spectroscopy of Size Selected, Matrix Isolated Si Clusters

1994 ◽  
Vol 332 ◽  
Author(s):  
A. Ogura ◽  
E. C. Honea ◽  
C. A. Murray ◽  
K. Raghavachari ◽  
W. O. Sprenger ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Plasmon ◽  
Mass Spectrometer ◽  
Surface Plasmon Polariton ◽  
Cluster Ions ◽  
Distorted Octahedron ◽  
Laser Vaporization ◽  
Pentagonal Bipyramid ◽  
The Matrix ◽  
Plasmon Polariton

ABSTRACTWe report results of Raman spectroscopy of size selected, matrix isolated Si clusters. Cluster ions produced by laser vaporization are size selected by a quadruple mass spectrometer and co-deposited with cryogenic matrices onto a substrate at ∼15K. A surface-plasmon-polariton-enhanced Raman geometry is used to gain adequate signal.The observed vibrational frequencies from Si4, Si6 and Si7 are compared with theoretically calculated Raman active modes based on the structures of planar rhombus, distorted octahedron and pentagonal bipyramid, respectively. The agreement is excellent. Cluster agglomeration is observed when cluster concentrations exceed ∼0.3% by volume in the matrix and/or with annealing at ∼28K, below the temperature of matrix evaporation.

scholarly journals Mass spectrometry of refractory black carbon particles from six sources: carbon-cluster and oxygenated ions

2014 ◽  
Vol 14 (5) ◽  
pp. 2591-2603 ◽  
Author(s):  
J. C. Corbin ◽  
B. Sierau ◽  
M. Gysel ◽  
M. Laborde ◽  
A. Keller ◽  
...  
Keyword(s):  
Carbon Cluster ◽  
Cluster Ions ◽  
Laser Vaporization ◽  
Carbonaceous Particles ◽  
Mass Spectral ◽  
Carbon Particles ◽  
Fullerene Soot ◽  
Aerosol Mass ◽  
Combustion Particles ◽  
Refractory Particle

Abstract. We discuss the major mass spectral features of different types of refractory carbonaceous particles, ionized after laser vaporization with an Aerodyne high-resolution soot-particle aerosol mass spectrometer (SP-AMS). The SP-AMS was operated with a switchable 1064 nm laser and a 600 °C thermal vaporizer, yielding respective measurements of the refractory and non-refractory particle components. Six samples were investigated, all of which were composed primarily of refractory material: fuel-rich and fuel-lean propane/air diffusion-flame combustion particles; graphite-spark-generated particles; a commercial fullerene-enriched soot; Regal Black, a commercial carbon black; and nascent aircraft-turbine combustion particles. All samples exhibited a spectrum of carbon-cluster ions Cxn+ in their refractory mass spectrum. Smaller clusters (x < 6) were found to dominate the Cxn+ distribution. For fullerene soot, fuel-rich-flame particles and spark-generated particles, significant Cxn+ clusters at x &amp;gg; 6 were present, with significant contributions from multiply charged ions (n > 1). In all six cases, the ions C1+ and C3+ contributed over 60% to the total C1 5 were present. When such signals were present, C1+ / C3+ was close to 1. When absent, C1+ / C3+ was < 0.8. This ratio may therefore serve as a proxy to distinguish between the two types of spectra in atmospheric SP-AMS measurements. Significant refractory oxygenated ions such as CO+ and CO2+ were also observed for all samples. We discuss these signals in detail for Regal Black, and describe their formation via decomposition of oxygenated moieties incorporated into the refractory carbon structure. These species may be of importance in atmospheric processes such as water uptake and heterogeneous chemistry. If atmospherically stable, these oxidized species may be useful for distinguishing between different combustion sources. If unstable, they may provide a means to estimate the atmospheric age of an rBC sample. Future studies should attempt to establish which of these scenarios is more realistic.

Sign in / Sign up

Export Citation Format

Share Document