title: X-ray spectroscopy of warm and hot electron components in the CAPRICE source plasma at EIS testbench at GSI.
abstract: An experimental campaign aiming to detect X radiation emitted by the plasma of the CAPRICE source - operating at GSI, Darmstadt - has been carried out. Two different detectors (a SDD - Silicon Drift Detector and a HpGe - hyper-pure Germanium detector) have been used to characterize the warm (2-30 keV) and hot (30-500 keV) electrons in the plasma, collecting the emission intensity and the energy spectra for different pumping wave frequencies and then correlating them with the CSD of the extracted beam measured by means of a bending magnet. A plasma emissivity model has been used to extract the plasma density along the cone of sight of the SDD and HpGe detectors, which have been placed beyond specific collimators developed on purpose. Results show that the tuning of the pumping frequency considerably modifies the plasma density especially in the warm electron population domain, which is the component responsible for ionization processes: a strong variation of the plasma density near axis region has been detected. Potential correlations with the charge state distribution in the plasma are explored.
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Mascali
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Celona
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Maimone
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Maeder
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Castro
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: F P
authors.initials: FP
authors.lastname: Romano
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Musumarra
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Altana
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Caliri
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Torrisi
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Neri
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Gammino
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Tinschert
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
authors.forename: K P
authors.initials: KP
authors.lastname: Spaedtke
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Rossbach
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Lang
authors.affiliation: Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud, - Via S. Sofia 62, 95123 Catania, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Ciavola