dorsal/arxiv
View SchemaElectron cyclotron resonance discharge as a source for hydrogen and deuterium ions production
| Authors | Angel Jose Chacon Velasco, Valeri Dougar-Jabon |
|---|---|
| Categories | |
| ArXiv ID | physics/0411128 |
| URL | https://arxiv.org/abs/physics/0411128 |
Abstract
In this report, we describe characteristics of a ring-structure hydrogen plasma heated in electron cyclotron resonance conditions and confined in a mirror magnetic trap and discuss the relative efficiency of secondary electrons and thermoelectrons in negative hydrogen and deuterium ion production. The obtained data and calculations of the balance equations for possible reactions demonstrate that the negative ion production is realized in two stages. First, the hydrogen and deuterium molecules are excited in collisions with the plasma electrons to high-laying Rydberg or vibrational levels in the plasma volume. The second stage leads to the negative ion production through the process of dissociative attachment of low energy electrons. The low energy electrons are originated due to a bombardment of the plasma electrode by ions of one of the driven rings and thermoemission from heated tungsten filaments. Experiments seem to indicate that the negative ion generation occurs predominantly in the limited volume filled with thermoelectrons. Estimation of the negative ion generation rate shows that the main channel of and ion production involves the process of high Rydberg state excitation.
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"abstract": "In this report, we describe characteristics of a ring-structure hydrogen\nplasma heated in electron cyclotron resonance conditions and confined in a\nmirror magnetic trap and discuss the relative efficiency of secondary electrons\nand thermoelectrons in negative hydrogen and deuterium ion production. The\nobtained data and calculations of the balance equations for possible reactions\ndemonstrate that the negative ion production is realized in two stages. First,\nthe hydrogen and deuterium molecules are excited in collisions with the plasma\nelectrons to high-laying Rydberg or vibrational levels in the plasma volume.\nThe second stage leads to the negative ion production through the process of\ndissociative attachment of low energy electrons. The low energy electrons are\noriginated due to a bombardment of the plasma electrode by ions of one of the\ndriven rings and thermoemission from heated tungsten filaments. Experiments\nseem to indicate that the negative ion generation occurs predominantly in the\nlimited volume filled with thermoelectrons. Estimation of the negative ion\ngeneration rate shows that the main channel of and ion production involves the\nprocess of high Rydberg state excitation.",
"arxiv_id": "physics/0411128",
"authors": [
"Angel Jose Chacon Velasco",
"Valeri Dougar-Jabon"
],
"categories": [
"physics.plasm-ph"
],
"title": "Electron cyclotron resonance discharge as a source for hydrogen and deuterium ions production",
"url": "https://arxiv.org/abs/physics/0411128"
},
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