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发表于 2025-3-30 10:06:04
Surface Organic Reactions Induced by Ion Bombardmention transfer, clustering and fragmentation (often by simple gas phase dissociation) are often involved in ion formation when organic molecules are subjected to particle impact. Inorganic complexes and organometallic compounds often undergo more complex processes, including ligand exchange and other
amorphous
发表于 2025-3-30 15:11:32
Ion Bombardment MS: A Sensitive Probe of Chemical Reactions Occurring at the Surface of Organic Solirization and other chemical syntheses, the long-term stability of drugs, the degradation of plastics, catalysis, and a range of analytical chemical procedures. We have recently investigated the use of energetic heavy ion bombardment mass spectrometry as a new technique for monitoring microscale chem
他日关税重重
发表于 2025-3-30 17:44:53
Ion-Neutral Correlations Following Metastable Decay Ions that decay in the field-free drift region contribute to the parent ion peak because the centre-of-mass velocity remains constant. However, the normal TOF spectrum provides no information on metastable decay paths or rate constants. Such data can contribute to structural elucidation and underst
整洁漂亮
发表于 2025-3-30 22:52:26
Metastable Ion Studies with a 252Cf Time-of-Flight Mass Spectrometerovery of the .Cf desorption method by R. Macfarlane and co-workers several P.D.M.S. systems have been built in a number of different laboratories. At our institute a time-of-flight instrument which was designed for measuring masses of exotic radioactive nuclei has been used for applications
拱形大桥
发表于 2025-3-31 02:37:29
Increasing Secondary Ion Yields: Derivatization/SIMSt imparts energy to the surface, which is partitioned in many ways. It is generally accepted that in metals the energy, for keV particles, is partitioned through momentum transfer collisions . This cascade disrupts the surface and results in emission of electrons, neutrals and ions. Molecular SIM
intertwine
发表于 2025-3-31 09:01:21
Aspects and Applications of Derivatization/SIMSivity can extend to the parts-per-billion (ppb) range for selected components in complex mixtures such as body fluids. We have applied derivatization/SIMS to several classes of compounds, including peptides , saccharides , ketones and ketosteroids and amine-containing drugs .
growth-factor
发表于 2025-3-31 11:36:08
Influence of the Target Preparation on the SI-Emission of Organic Moleculesies of the substrate surface, the solvent, the additives and the chemical behaviour of the substance itself /1–5/. Most often silver has been successfully applied as substrate material. In order to get informations about interactions between solved molecules and the substrate and about the compositi
闲聊
发表于 2025-3-31 15:12:03
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INCUR
发表于 2025-3-31 17:50:39
TOF-SIMS of Polymers in the High Mass Rangeyrolyzates in low mass range could be detected. Invention of softer volatilization and ionization sources like field desorption MS, (FDMS), electrohydrodynamic MS, (EHDMS), , .Cf-plasma desorption (.Cf-PDMS), laser desorption, (LDMS), and secondary ion MS, (SIMS), has expanded MS to include polym