Relation between plasmons and the valence-band density of states in polymethylmethacrylate: Influence of ion irradiation on damage selectivity

J. P. Moliton; C. Jussiaux; T. Trigaud; R. Lazzaroni; O. Lhost; J. L. Bredas; Y. Kihn; J. Sevely

doi:10.1080/13642819608239151

Relation between plasmons and the valence-band density of states in polymethylmethacrylate: Influence of ion irradiation on damage selectivity

J. P. Moliton
, C. Jussiaux
, T. Trigaud
, R. Lazzaroni
, O. Lhost
, J. L. Bredas
, Y. Kihn
, J. Sevely

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A physical model is presented that aims at rationalizing the selectivity of bond breakage observed when polymethylmethacrylate is irradiated by ions in the 10–500 Kev energy range. This model, previously proposed by Brandt and Ritchie, is based on electronic collective effects. The coupling between the pure plasma oscillation at ω_p and the oscillation of free electrons at (ω²_k0)^½ makes the whole electronic population resonant at the frequency ω_rp = (ω²_p+ (ω²_k0))^½. By computing the valence-band density of states, we are able to calculate (ω²_k0) and then to deduce the theoretical value of ω_rp. On the other hand, we provide an experimental measurement of ω_rp and study its dependence on ion fluence by electron-energy-loss spectroscopy. The validity of the model of Brandt and Ritchie is then discussed in the light of both theoretical and experimental data.

Original language	English (US)
Pages (from-to)	763-778
Number of pages	16
Journal	Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume	73
Issue number	5
DOIs	https://doi.org/10.1080/13642819608239151
State	Published - May 1996
Externally published	Yes

ASJC Scopus subject areas

General Chemical Engineering
General Physics and Astronomy

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10.1080/13642819608239151

Cite this

Moliton, J. P., Jussiaux, C., Trigaud, T., Lazzaroni, R., Lhost, O., Bredas, J. L., Kihn, Y., & Sevely, J. (1996). Relation between plasmons and the valence-band density of states in polymethylmethacrylate: Influence of ion irradiation on damage selectivity. Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties, 73(5), 763-778. https://doi.org/10.1080/13642819608239151

Relation between plasmons and the valence-band density of states in polymethylmethacrylate: Influence of ion irradiation on damage selectivity. / Moliton, J. P.; Jussiaux, C.; Trigaud, T. et al.
In: Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties, Vol. 73, No. 5, 05.1996, p. 763-778.

Research output: Contribution to journal › Article › peer-review

Moliton, JP, Jussiaux, C, Trigaud, T, Lazzaroni, R, Lhost, O, Bredas, JL, Kihn, Y & Sevely, J 1996, 'Relation between plasmons and the valence-band density of states in polymethylmethacrylate: Influence of ion irradiation on damage selectivity', Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties, vol. 73, no. 5, pp. 763-778. https://doi.org/10.1080/13642819608239151

Moliton JP, Jussiaux C, Trigaud T, Lazzaroni R, Lhost O, Bredas JL et al. Relation between plasmons and the valence-band density of states in polymethylmethacrylate: Influence of ion irradiation on damage selectivity. Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties. 1996 May;73(5):763-778. doi: 10.1080/13642819608239151

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abstract = "A physical model is presented that aims at rationalizing the selectivity of bond breakage observed when polymethylmethacrylate is irradiated by ions in the 10–500 Kev energy range. This model, previously proposed by Brandt and Ritchie, is based on electronic collective effects. The coupling between the pure plasma oscillation at ωp and the oscillation of free electrons at (ω2k0)½ makes the whole electronic population resonant at the frequency ωrp = (ω2p+ (ω2k0))½. By computing the valence-band density of states, we are able to calculate (ω2k0) and then to deduce the theoretical value of ωrp. On the other hand, we provide an experimental measurement of ωrp and study its dependence on ion fluence by electron-energy-loss spectroscopy. The validity of the model of Brandt and Ritchie is then discussed in the light of both theoretical and experimental data.",

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note = "Funding Information: ACKNOWLEDGMENTS The authors have written this paper in memory of W. Brandt, to whom they will be grateful for ever. This work has been initiated and partially supported by the Commission of European Union, in the framework of the Brite-Euram programme NAPOLEO (No. 148C).",

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AU - Sevely, J.

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Relation between plasmons and the valence-band density of states in polymethylmethacrylate: Influence of ion irradiation on damage selectivity

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