Production of multiply charge‐state ions in a multicusp ion source
| Autor: | M. D. Williams, Ka-Ngo Leung, R. A. Gough, M. Monroy, G. J. deVries |
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| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | Review of Scientific Instruments. 67:1384-1386 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1146676 |
| Popis: | High charge state ion beams are commonly used in atomic and nuclear physics experiments. Multiply charged ions are normally produced in an ECR or in an EBIS. Multicusp generators can confine primary electrons very efficiently. Therefore, the electrical and gas efficiencies of these devices are high. Since the magnetic cusp fields are localized near the chamber wall, large volumes of uniform and high density plasmas can be obtained at low pressure, conditions favorable for the formation of multiply charged state ions. Attempts have been made at LBNL to generate multiply charged ion beams by employing a 25‐cm diam by 25‐cm long multicusp source. Experimental results demonstrated that charge states as high as 7+ can be obtained with argon or xenon plasmas. Multiply charged metallic ions such as tungsten and titanium have also been successfully formed in the multicusp source by evaporation and sputtering processes. In order to extend the charge state to higher values, a novel technique of injecting high energ... |
| Databáze: | OpenAIRE |
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