KINETIC ENERGY AND MASS ANALYSIS OF COVALENT GROUP IV CLUSTER IONS IN PULSED-LASER STIMULATED FIELD EVAPORATION

1988 ◽  
Vol 49 (C6) ◽  
pp. C6-75-C6-80 ◽  
Author(s):  
T. T. TSONG ◽  
J. LIU
Keyword(s):  
Kinetic Energy ◽  
Pulsed Laser ◽  
Group Iv ◽  
Cluster Ions ◽  
Field Evaporation ◽  
Mass Analysis

Low-Fluence Laser Induced Fragmentation and Desorption of 3,4,9,10-Perylenetetracarboxylic Dianhydride (PTCDA) Thin Film

2013 ◽  
Vol 543 ◽  
pp. 30-34 ◽  
Author(s):  
Aljona Ramonova ◽  
Tengiz Butkhuzi ◽  
Viktorija Abaeva ◽  
I.V. Tvauri ◽  
Soslan Khubezhov ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Kinetic Energy ◽  
Atomic Oxygen ◽  
Laser Light ◽  
Pulsed Laser ◽  
Molecular Fragmentation ◽  
Irradiation Pulse ◽  
Main Effect

Laser-induced fragmentation and desorption of fragments of PTCDA films vacuum-deposited on GaAs (100) substrate has been studied by time-of-flight (TOF) mass spectroscopy. The main effect caused by pulsed laser light irradiation (pulse duration: 10 ns, photon energy: 2.34 eV and laser fluence ranging from 0.5 to 7 mJ/cm2) is PTCDA molecular fragmentation and desorption of the fragments formed, whereas no desorption of intact PTCDA molecule was detected. Fragments formed are perylene core C20H8, its half C10H4, carbon dioxide, carbon monoxide and atomic oxygen. All desorbing fragments have essentially different kinetic energy. The mechanism of photoinduced molecular fragmentation and desorption is discussed.

Ion Kinetic Energy Distributions and Mechanisms of Pulsed Laser Ablation on Al

2008 ◽  
Vol 112 (42) ◽  
pp. 16556-16560 ◽  
Author(s):  
Jon I. Apiñániz ◽  
Borja Sierra ◽  
Roberto Martínez ◽  
Asier Longarte ◽  
Carolina Redondo ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Kinetic Energy ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Energy Distributions ◽  
Ion Kinetic Energy ◽  
Kinetic Energy Distributions

Functional gold nanoparticles coupled with laser desorption ionization mass spectrometry for bioanalysis

2016 ◽  
Vol 8 (46) ◽  
pp. 8123-8133 ◽  
Author(s):  
Binesh Unnikrishnan ◽  
Chia-Yin Chang ◽  
Han-Wei Chu ◽  
Anisha Anand ◽  
Chih-Ching Huang
Keyword(s):  
Mass Spectrometry ◽  
Gold Nanoparticles ◽  
Gold Cluster ◽  
Pulsed Laser ◽  
Laser Desorption ◽  
Cluster Ions ◽  
Ionization Mass ◽  
Laser Desorption Ionization ◽  
Desorption Ionization ◽  
Surface Ligand

Monitoring of surface ligand and gold cluster ions produced by pulsed-laser-induced desorption/ionization of gold nanoparticles enables the transduction and amplification of mass signals for biosensing and bioimaging applications.

Observation of doubly charged triatomic cluster ions in field evaporation

1985 ◽  
Vol 156 ◽  
pp. 173-182 ◽  
Author(s):  
W. Drachsel ◽  
Th. Jentsch ◽  
K.A. Gingerich ◽  
J.H. Block
Keyword(s):  
Cluster Ions ◽  
Field Evaporation ◽  
Doubly Charged
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