Determination of Angular Distribution of Bremsstrahlung Spectral Temperature Measured at the Centre Position of Electron Cyclotron Resonance Ion Source

Authors

Mwingereza John Kumwenda Dr, University of Dar es salaamFollow

Abstract

This study aims at determining azimuthal angular distribution of bremsstrahlung spectral temperature measured from 28-GHz Electron Cyclotron Resonance Ion Source (ECRIS), using data obtained from the Busan centre of Korea Basic Science Institute (KBSI). Bremsstrahlung photons of the angular distributions from 28-GHz ECR Ion source at the KBSI were measured in three azimuthal angles for the first time. Three round type NaI(TI) scintillation detectors were used to measure the angular distributions of the bremsstrahlung photons emitted at the centre position of the ECRIS at the same time. Monte Carlo simulation based on Geant4 package was performed to take the geometrical acceptance and energy-dependent detection efficiency into account due to large non uniformity in the material budget. True bremsstrahlung energy spectra from the 28-GHz ECR ion source were obtained using the inverse-matrix unfolding method. The unfolding method was based on a full geometry of the Geant4 model of the ECRIS plasma. Based on the results obtained, it was observed that the maximum spectral temperature was at angle 30o of the NaI(TI) detector D1 for all three detector configurations. It is interesting to observe that the spectral temperature for detector D1 at an angle 30o is in coincidence with one of the maximum angles of the ECRIS plasma shape

Recommended Citation

Kumwenda, Mwingereza John Dr (2021) "Determination of Angular Distribution of Bremsstrahlung Spectral Temperature Measured at the Centre Position of Electron Cyclotron Resonance Ion Source," Journal of Humanities and Social Sciences: Vol. 10 : No. 4 , Article 10.
Available at: https://doi.org/10.56279/jhss.v10.i4.0

Publication Date

11-23-2021

DOI

10.56279/jhss.v10.i4.0

Publisher

Dar es Salaam University College of Education (DUCE)