Abstract
High-energy bremsstrahlung photon emission beyond a critical energy from electron cyclotron resonance (ECR) heating has long attracted much attention, and its nature has yet been unsolved. We have measured bremsstrahlung photons from the 28-GHz ECR ion source at Busan Center of Korean Basic Science Institute. The gamma-ray detection system consists of three NaI(Tl) scintillation detectors placed 62 cm radially from the beam axis and a NaI(Tl) scintillation detector at the extraction port for monitoring the photon intensity along the beam axis. Bremsstrahlung photon energy spectra were measured at nine azimuthal angles at the RF power of 1 kW. Azimuthal angular distributions of bremsstrahlung photons were found to be in coincidence with the structure the ECR ion source and the shape of ECR plasma.
| Original language | English |
|---|---|
| Pages (from-to) | 780-784 |
| Number of pages | 5 |
| Journal | Journal of the Korean Physical Society |
| Volume | 71 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2017 Dec 1 |
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Keywords
- Bremsstrahlung photons
- ECR ion source
- Microwave power
- NaI(TI) detector
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Angular distributions of bremsstrahlung photons from ECR plasma. / Kumwenda, M. J.; Ahn, Jung Keun; Lee, J. W.; Lugendo, I. J.; Kim, S. J.; Park, J. Y.; Won, M. S.
In: Journal of the Korean Physical Society, Vol. 71, No. 11, 01.12.2017, p. 780-784.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Angular distributions of bremsstrahlung photons from ECR plasma
AU - Kumwenda, M. J.
AU - Ahn, Jung Keun
AU - Lee, J. W.
AU - Lugendo, I. J.
AU - Kim, S. J.
AU - Park, J. Y.
AU - Won, M. S.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - High-energy bremsstrahlung photon emission beyond a critical energy from electron cyclotron resonance (ECR) heating has long attracted much attention, and its nature has yet been unsolved. We have measured bremsstrahlung photons from the 28-GHz ECR ion source at Busan Center of Korean Basic Science Institute. The gamma-ray detection system consists of three NaI(Tl) scintillation detectors placed 62 cm radially from the beam axis and a NaI(Tl) scintillation detector at the extraction port for monitoring the photon intensity along the beam axis. Bremsstrahlung photon energy spectra were measured at nine azimuthal angles at the RF power of 1 kW. Azimuthal angular distributions of bremsstrahlung photons were found to be in coincidence with the structure the ECR ion source and the shape of ECR plasma.
AB - High-energy bremsstrahlung photon emission beyond a critical energy from electron cyclotron resonance (ECR) heating has long attracted much attention, and its nature has yet been unsolved. We have measured bremsstrahlung photons from the 28-GHz ECR ion source at Busan Center of Korean Basic Science Institute. The gamma-ray detection system consists of three NaI(Tl) scintillation detectors placed 62 cm radially from the beam axis and a NaI(Tl) scintillation detector at the extraction port for monitoring the photon intensity along the beam axis. Bremsstrahlung photon energy spectra were measured at nine azimuthal angles at the RF power of 1 kW. Azimuthal angular distributions of bremsstrahlung photons were found to be in coincidence with the structure the ECR ion source and the shape of ECR plasma.
KW - Bremsstrahlung photons
KW - ECR ion source
KW - Microwave power
KW - NaI(TI) detector
UR - http://www.scopus.com/inward/record.url?scp=85035143534&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85035143534&partnerID=8YFLogxK
U2 - 10.3938/jkps.71.780
DO - 10.3938/jkps.71.780
M3 - Article
AN - SCOPUS:85035143534
VL - 71
SP - 780
EP - 784
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 11
ER -