The positive SIMS spectrum of poly(methyl methacrylate) (PMMA) has been obtained with a mass resolution in excess of 8000 and all the components assigned up to m/z 200 based on accurate mass measurements. Aspects of the interpretation of the spectrum, previously based on quadrupole SIMS data from a
Cs+Ion Beam Damage of Poly(vinyl chloride) and Poly(methyl methacrylate) Studied by High Mass Resolution ToF-SIMS
β Scribed by Briggs, D.; Fletcher, I. W.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 652 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0142-2421
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β¦ Synopsis
Changes in the SIMS spectra of poly(vinyl chloride) (PVC) and poly(methyl methacrylate) (PMMA) as a function of 8 keV Cs`dose have been studied in the range 1011-5 Γ 1013 ions cm~2. In order to resolve uncertainties in previous studies (based on quadrupole SIMS and insulating samples) this work has utilized a high mass resolution ToF-SIMS instrument and Γlms on silicon sufficiently thin to obviate the need for surface potential control (charge neutralization). The form of the damage curves has been compared with a recently introduced model of damage development based on the statistics of bond breaking.
1997 by John
π SIMILAR VOLUMES
A previous XPS and low mass resolution (quadrupole) SIMS study of methyl methacrylate-poly(ethylene glycol) methacrylate random copolymers indicated (by XPS) a surface composition close to that of the bulk, however the trends in SIMS intensity ratios for peaks chosen to represent the individual mono