High-resolution γ-ray measurements were carried out on the Joint European Torus (JET) in an experiment aimed at accelerating 4He ions in the MeV range by coupling third harmonic radio frequency heating to an injected 4He beam. For the first time, Doppler broadening of γ-ray peaks from the 12C(d, pγ)13C and 9Be(α, nγ)12C reactions was observed and interpreted with dedicated Monte Carlo codes based on the detailed nuclear physics of the processes. Information on the confined 4He and deuteron energy distribution was inferred, and confined 4He ions with energies as high as 6 MeV were assessed. A signature of MHD activity in γ-ray traces was also detected. The reported results have a bearing on diagnostics for fast ions in the MeV range in next step fusion devices.

Nocente, M., Tardocchi, M., Kiptily, V., Blanchard, P., Chugunov, I., Conroy, S., et al. (2012). High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET4He plasmas. NUCLEAR FUSION, 52(6) [10.1088/0029-5515/52/6/063009].

High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET4He plasmas

NOCENTE, MASSIMO
;
GORINI, GIUSEPPE
2012

Abstract

High-resolution γ-ray measurements were carried out on the Joint European Torus (JET) in an experiment aimed at accelerating 4He ions in the MeV range by coupling third harmonic radio frequency heating to an injected 4He beam. For the first time, Doppler broadening of γ-ray peaks from the 12C(d, pγ)13C and 9Be(α, nγ)12C reactions was observed and interpreted with dedicated Monte Carlo codes based on the detailed nuclear physics of the processes. Information on the confined 4He and deuteron energy distribution was inferred, and confined 4He ions with energies as high as 6 MeV were assessed. A signature of MHD activity in γ-ray traces was also detected. The reported results have a bearing on diagnostics for fast ions in the MeV range in next step fusion devices.
Articolo in rivista - Articolo scientifico
52.70.La X-ray and gamma-ray measurements; 52.65.Pp Monte Carlo methods; 52.50.Qt Plasma heating by radio-frequency fields; ICR, ICP, helicons; 52.55.Pi Fusion products effects (e.g., alpha-particles, etc.), fast particle effects
English
2012
52
6
063009
none
Nocente, M., Tardocchi, M., Kiptily, V., Blanchard, P., Chugunov, I., Conroy, S., et al. (2012). High-resolution gamma ray spectroscopy measurements of the fast ion energy distribution in JET4He plasmas. NUCLEAR FUSION, 52(6) [10.1088/0029-5515/52/6/063009].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/39081
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