Determining the translational and internal temperatures of isolated metal clusters: A comprehensive approach based on molecular-beam-deflection experiments

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
Thomas M. Fuchs ◽  
Filip Rivic ◽  
Rolf Schäfer
Keyword(s):  
Molecular Beam ◽  
Metal Clusters ◽  
Comprehensive Approach ◽  
Beam Deflection

SIZE-SELECTIVE MEASUREMENTS OF SILICON-CLUSTER POLARIZABILITIES BY A CLUSTER-BEAM DEFLECTION TECHNIQUE

1996 ◽  
Vol 03 (01) ◽  
pp. 371-375 ◽  
Author(s):  
J. WOENCKHAUS ◽  
R. SCHÄFER ◽  
J.A. BECKER
Keyword(s):  
Cluster Size ◽  
Molecular Beam ◽  
Metal Clusters ◽  
Beam Deflection ◽  
Silicon Cluster ◽  
Cluster Beam ◽  
Electric Polarizabilities ◽  
Semiconductor Clusters ◽  
Silicon Nanocrystallites

Average static electric polarizabilities of small and middle silicon-cluster size ranges have been measured employing a mass-selective molecular beam deflection method. The largest studied clusters contained N=60 atoms of silicon. The polarizabilities of the semiconductor clusters are compared to the results obtained for metal clusters. Especially, the measurements of the midsized semiconductor clusters Si30–Si45 are discussed with regard to the predicted spherical cage-like structures which have been recently by Röthlisberger et al.1 The results for the larger clusters are analyzed in terms of recent experiments of photoluminescence of small silicon nanocrystallites.2

MAGNETISM IN TRANSITION-METAL CLUSTERS FROM THE ATOM TO THE BULK

1996 ◽  
Vol 03 (01) ◽  
pp. 429-434 ◽  
Author(s):  
I.M.L. BILLAS ◽  
A. CHÂTELAIN ◽  
W.A. de HEER
Keyword(s):  
Molecular Beam ◽  
Magnetic Moments ◽  
Beam Deflection ◽  
Transition Metal Clusters ◽  
Iron Cluster ◽  
Iron Cobalt ◽  
Nickel Clusters ◽  
Magnetic Shell ◽  
Superparamagnetic Clusters ◽  
Cobalt And Nickel

Molecular beam deflection measurements of small iron, cobalt, and nickel clusters show how magnetism develops as the cluster size is increased from several tens to several hundreds of atoms for temperatures from 80 and 1000 K. Cluster magnetization is found to be superparamagnetic for rotationally warm clusters, where it follows the Langevin function. The magnetization of rotationally cold clusters is anomalous: it is strongly reduced and nonlinear with the applied field. For superparamagnetic clusters, the magnetic moments can be determined from the magnetization. We find that ferromagnetism occurs even for the smallest sizes: for clusters with less than about 30 atoms the magnetic moments are atom-like and as the size is increased up to 700 atoms they approach the bulk limit, with oscillations probably caused by surface-induced spin-density waves. The trends are explained in a magnetic shell model. The magnetic properties of iron cluster show anomalies, suggesting that a high moment to low moment crystallographic phase transition in Fe clusters occurs at relatively low temperatures.

Application of Molecular Beam Deflection Time-of-Flight Mass Spectrometry to Peptide Analysis

2003 ◽  
Vol 75 (20) ◽  
pp. 5512-5516 ◽  
Author(s):  
Rodolphe Antoine ◽  
Isabelle Compagnon ◽  
Driss Rayane ◽  
Michel Broyer ◽  
Philippe Dugourd ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Molecular Beam ◽  
Time Of Flight ◽  
Beam Deflection ◽  
Peptide Analysis ◽  
Flight Mass Spectrometry

Molecular dynamics simulations of molecular beam deflection experiments

2006 ◽  
Vol 423 (1-3) ◽  
pp. 13-16 ◽  
Author(s):  
Ph. Dugourd ◽  
R. Antoine ◽  
M. Abd El Rahim ◽  
D. Rayane ◽  
M. Broyer ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Molecular Beam ◽  
Beam Deflection ◽  
Dynamics Simulations

Asymmetric Top Rotors in Electric Fields. II. Influence of Internal Torsions in Molecular Beam Deflection Experiments

2006 ◽  
Vol 110 (33) ◽  
pp. 10006-10011 ◽  
Author(s):  
R. Antoine ◽  
M. Abd El Rahim ◽  
M. Broyer ◽  
D. Rayane ◽  
Ph. Dugourd
Keyword(s):  
Electric Fields ◽  
Molecular Beam ◽  
Beam Deflection ◽  
Asymmetric Top

Molecular beam deflection experiments on mixed clusters

2001 ◽  
Vol 16 (1) ◽  
pp. 365-368 ◽  
Author(s):  
I. Compagnon ◽  
R. Antoine ◽  
D. Rayane ◽  
Ph. Dugourd ◽  
M. Broyer
Keyword(s):  
Molecular Beam ◽  
Beam Deflection ◽  
Mixed Clusters

Molecular Beam Deflection Experiments on Fullerene and Benzene Derivatives

2009 ◽  
Author(s):  
Rodolphe Antoine ◽  
Driss Rayane ◽  
Michel Broyer ◽  
Philippe Dugourd ◽  
George Maroulis ◽  
...  
Keyword(s):  
Molecular Beam ◽  
Beam Deflection ◽  
Benzene Derivatives

Influence of nuclear spins on electron spin coherence in isolated, p-doped tin clusters

2021 ◽  
Author(s):  
Thomas M. Fuchs ◽  
Rolf Schäfer
Keyword(s):  
Electron Spin ◽  
Molecular Beam ◽  
Spin Dynamics ◽  
Beam Deflection ◽  
Nuclear Spins ◽  
Spin Coherence ◽  
Level Crossings

Electron spin coherence is probed for the superatomic cluster AlSn12 in a molecular beam deflection experiment. Nuclear spins diminish electron spin coherence which is discussed within spin dynamics on avoided level crossings.

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