The adsorption of helium atoms on small cationic gold clusters

2018 ◽  
Vol 20 (14) ◽  
pp. 9554-9560 ◽  
Author(s):  
Marcelo Goulart ◽  
Michael Gatchell ◽  
Lorenz Kranabetter ◽  
Martin Kuhn ◽  
Paul Martini ◽  
...  
Keyword(s):  
Gold Cluster ◽  
Gold Clusters ◽  
Cluster Ions ◽  
Helium Atoms ◽  
Ion Structure ◽  
Cluster Ion ◽  
Cationic Gold

Adducts between gold cluster ions and helium atoms reveal the underlying cluster ion structure.

Metastable fragmentation of photoionized styrene cluster ions: Implications for cluster ion structure

2012 ◽  
Vol 330-332 ◽  
pp. 58-62
Author(s):  
David A. Hales ◽  
Kevin L. Kmiec ◽  
Catrin M. Mills ◽  
Patrick D. Rawhouser ◽  
Shawna Rigsby McGehee
Keyword(s):  
Cluster Ions ◽  
Ion Structure ◽  
Metastable Fragmentation ◽  
Cluster Ion

FORMATION OF HELIUM-CLUSTER IONS CO2Hen+ (n≤15) IN A DRIFT TUBE COOLED BY LIQUID HELIUM

1996 ◽  
Vol 03 (01) ◽  
pp. 205-209 ◽  
Author(s):  
H. TANUMA ◽  
M. SAKAMOTO ◽  
N. KOBAYASHI
Keyword(s):  
Liquid Helium ◽  
Cluster Size ◽  
Drift Tube ◽  
Cluster Ions ◽  
Magic Numbers ◽  
Helium Atoms ◽  
Drift Field ◽  
Helium Cluster ◽  
Helium Gas ◽  
Cluster Ion

The formation of helium-cluster ion CO 2 He n+ (n≤15) has been observed when CO2+ ions are injected into a drift tube filled with helium gas cooled by liquid helium. The cluster sizes n = 5 and 14 are found to be magic numbers based on the drift-field dependence of the cluster size distribution. The structure of CO 2 He 14+ cannot be considered as the icosahedron, which is proposed as the structure of the cluster ions having twelve helium atoms surrounding the ionic core in our previous papers.

scholarly journals Absolute cross sections for the dissociation of hydrogen cluster ions in high-energy collisions with helium atoms

2006 ◽  
Vol 73 (2) ◽  
Author(s):  
S. Eden ◽  
J. Tabet ◽  
K. Samraoui ◽  
S. Louc ◽  
B. Farizon ◽  
...  
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Cluster Ions ◽  
Helium Atoms ◽  
High Energy Collisions

Cationic gold clusters ligated with differently substituted phosphines: effect of substitution on ligand reactivity and binding

2015 ◽  
Vol 17 (22) ◽  
pp. 14636-14646 ◽  
Author(s):  
Grant E. Johnson ◽  
Astrid Olivares ◽  
David Hill ◽  
Julia Laskin
Keyword(s):  
Ligand Binding ◽  
Lone Pair ◽  
Gold Clusters ◽  
Binding Energies ◽  
Phosphine Ligands ◽  
Strongly Correlated ◽  
P Loss ◽  
Ligand Reactivity ◽  
Cationic Gold

Loss of substituted phosphine ligands is strongly correlated with the electron donating ability of the phosphorous lone pair. The results indicate that the relative ligand binding energies increase in the order PMe3 < PPhMe2 < PPh2Me < PPh3 < PPh2Cy < PPhCy2 < PCy3.

SPUTTERING WITH GAS CLUSTER-ION BEAMS

1996 ◽  
Vol 03 (01) ◽  
pp. 1017-1021 ◽  
Author(s):  
J. MATSUO ◽  
M. AKIZUKI ◽  
J. NORTHBY ◽  
G.H. TAKAOKA ◽  
I. YAMADA
Keyword(s):  
Ion Irradiation ◽  
Removal Rate ◽  
Ion Beam ◽  
Solid Surfaces ◽  
Silicon Surfaces ◽  
Cluster Ions ◽  
Mass Filter ◽  
Cluster Bombardment ◽  
Cluster Ion Beams ◽  
Cluster Ion

A high-current (~100 nA) cluster-ion-beam equipment with a new mass filter has been developed to study the energetic cluster-bombardment effects on solid surfaces. A dramatic reduction of Cu concentration on silicon surfaces has been achieved by 20-keV Ar cluster (N~3000) ion bombardment. The removal rate of Cu with cluster ions is two orders of magnitude higher than that with monomer ions. A significantly higher sputtering yield is expected for cluster-ion irradiation. An energetic cluster-ion beam is quite suitable for removal of metal.

A New Type of Cluster-Ion Source for Thin Film Deposition

1990 ◽  
Vol 206 ◽  
Author(s):  
Hellmut Haberland ◽  
Martin Karrais ◽  
Martin Mall
Keyword(s):  
Electron Impact ◽  
Plane Surface ◽  
Thin Film Deposition ◽  
Ion Source ◽  
Film Deposition ◽  
Cluster Ions ◽  
Cluster Ion ◽  
Impact Ionisation ◽  
Aggregation Technique ◽  
High Degree

ABSTRACTAtoms are gas discharge sputtered from a solid target. They are condensed to form clusters using the gas aggregation technique. An intense beam of clusters of all solid materials can be obtained. Up to 80 % of the clusters can be ionised without using additional electron impact ionisation. Total deposition rates vary between 1 and 1000 Å per second depending on cluster diameter, which can be varied between 3 and 500 nm. Thin films of Al, Cu, and Mo have been produced so far. For non accelerated beams a weakly adhering mostly coulored deposit is obtained. Accelerating the cluster ions this changes to a strongly adhering film, having a shiny metallic appearance, and a very sharp and plane surface as seen in an electron microscope. The advantages compared to Kyoto ICB-method are: easy control of the cluster size, no electron impact ionisation, high degree of ionisation, and sputtering is used instead of thermal evaporation, which allows the use of high melting point materials.

Observing the real time formation of phosphine-ligated gold clusters by electrospray ionization mass spectrometry

2017 ◽  
Vol 19 (26) ◽  
pp. 17187-17198 ◽  
Author(s):  
Marshall R. Ligare ◽  
Grant E. Johnson ◽  
Julia Laskin
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Ionization ◽  
Real Time ◽  
Electrospray Ionization Mass Spectrometry ◽  
Gold Cluster ◽  
Gold Clusters ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Real Time Monitoring ◽  
The Real

Real-time monitoring of the gold cluster synthesis by electrospray ionization mass spectrometry reveals distinct formation pathways for Au8, Au9 and Au10 clusters.

scholarly journals Temperature dependent chiroptical response of sigmoidal gold clusters: probing the stability of chiral metal clusters

2018 ◽  
Vol 9 (25) ◽  
pp. 5614-5622 ◽  
Author(s):  
Ping Guo ◽  
Biao Yang ◽  
Li Zhang ◽  
Liang Zhao
Keyword(s):  
Metal Clusters ◽  
Gold Cluster ◽  
Gold Clusters ◽  
Cluster Compounds ◽  
Structural Factors ◽  
Temperature Dependent ◽  
Cluster Stability ◽  
The Stability

Three chiral gold cluster compounds are herein selected to probe how structural factors influence the cluster stability upon heating.

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