Manifestations et mesures de concentration de métastables dans les jets de plasma d'argon ou d'hélium à pression atmosphérique dans les régions de basses températures

Fortin, Marc; Meubus, Paul

doi:10.1139/p79-223

Cited by 2 publications

(1 citation statement)

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“…Measurements of metastable atom concentration in Ar and He plasma jets, low temperature and atmospheric pressure [21] show that metastable concentrations are of the order of 10 9 -10 12 cm −3 in the close proximity of the plasma. Radiative destruction of metastable atoms results from three-body collisions with neutral atoms in the fundamental state.…”

Section: Removal Of C-c Bondsmentioning

confidence: 99%

Role of active species in surface cleaning by an Ar-N2 atmospheric pressure post-discharge

Belmonte¹,

Thiebaut²,

Mézerette³

2002

J. Phys. D: Appl. Phys.

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Post-discharge cleaning at atmospheric pressure of oxidized iron foils rinsed by acetone and methanol is studied by XPS. The influence of the temperature (T<450 K) and the UV photons on cleaning is negligible. When pure rare gases (He, Ne, Ar) are used, metastable species in post-discharge are transported downstream the plasma and relax their energy on the surface. C-C bonds are mainly removed by this process. When nitrogen is added to the rare gas (from 0 to 4.6 vol.% ), a selective influence on the etching process of the surface contaminants by nitrogen atoms is observed. The removal kinetics of chemical groups analysed by XPS is determined by using an exponential decay function corresponding to a first-order abstraction process. The decrease of C(1s) in N-C, O(1s) in N-C-O and N(1s) XPS peaks is correlated with the nitrogen atom concentration in the carrier gas. Reactions between nitrogen atoms and specific carbon containing groups occur (probably C-OH bonds of methanol). Stronger bonds like C=O (probably from acetone) are not removed by the post-discharge.

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Section: Removal Of C-c Bondsmentioning

confidence: 99%

Role of active species in surface cleaning by an Ar-N2 atmospheric pressure post-discharge

Belmonte¹,

Thiebaut²,

Mézerette³

2002

J. Phys. D: Appl. Phys.

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Atmospheric pressure plasma jets: an overview of devices and new directions

Winter

Brandenburg

Weltmann

2015

Plasma Sources Sci. Technol.

406

295

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Atmospheric pressure plasma jets have a long history of more than 50 years. During this time their design and plasma generation mechanism has been developed and adapted to various fields of applications. This review aims at giving an overview of jet devices by starting with a brief history of their development. This is followed by an overview of commonly used terms and definitions as well as a survey of different classification schemes (e.g. geometry, excition frequency or specific energy input) described in literature. A selective update of new designs and novel research achievments on atmospheric pressure plasma jets published in 2012 or later shows the impressive variety and rapid development of the field. Finally, a brief outlook on the future trends and directions is given.

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Manifestations et mesures de concentration de métastables dans les jets de plasma d'argon ou d'hélium à pression atmosphérique dans les régions de basses températures

Cited by 2 publications

References 1 publication

Role of active species in surface cleaning by an Ar-N2 atmospheric pressure post-discharge

Role of active species in surface cleaning by an Ar-N2 atmospheric pressure post-discharge

Atmospheric pressure plasma jets: an overview of devices and new directions

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