Investigation of the density and temperature of electrons in a compact 2.45 GHz electron cyclotron resonance ion source plasma by x-ray measurements

Hohl, Markus; Wurz, Peter; Bochsler, Peter (2005). Investigation of the density and temperature of electrons in a compact 2.45 GHz electron cyclotron resonance ion source plasma by x-ray measurements. Plasma sources science and technology, 14(4), pp. 692-699. IOP Publishing 10.1088/0963-0252/14/4/008

[img] Text
Hohl_2005_Plasma_Sources_Sci._Technol._14_692.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (690kB) | Request a copy

X-ray measurements of the plasma of a compact 2.45 GHz electron cyclotron resonance ion source (ECRIS) are performed to determine the temperature and density of the electrons heated resonantly in the ECRIS. The x-ray detector used to investigate the plasma consists of a small silicon (Si-PIN) photodiode to detect photons in the energy range of 1–100 keV. The detector has an energy resolution of 180 eV at 5.9 keV that allows us to record detailed x-ray spectra. Assuming two temperature electron populations, both Maxwellian distributed, the analysis of the x-ray spectra shows a temperature of about 2 keV for the hot electron fraction in addition to the population of cold electrons at less than 2 eV. The fraction of the hot electrons amounts to 1–10%. We present a description of the x-ray detector set-up as well as x-ray spectra and calculations for the temperature and density of the electrons in the ECRIS plasma.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Other Institutions > Emeriti, Faculty of Science
08 Faculty of Science > Physics Institute

UniBE Contributor:

Wurz, Peter and Bochsler, Peter

Subjects:

500 Science > 520 Astronomy
600 Technology > 620 Engineering

ISSN:

0963-0252

Publisher:

IOP Publishing

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

09 Jun 2021 15:52

Last Modified:

09 Jun 2021 15:52

Publisher DOI:

10.1088/0963-0252/14/4/008

BORIS DOI:

10.7892/boris.153437

URI:

https://boris.unibe.ch/id/eprint/153437

Actions (login required)

Edit item Edit item
Provide Feedback