The spectral broadening of γ-rays from fusion plasmas can be measured in high-resolution gamma-ray spectrometry (GRS). We derive weight functions that determine the observable velocity space and quantify the velocity-space sensitivity of one-step reaction high-resolution GRS measurements in magnetized fusion plasmas. The weight functions suggest that GRS resolves the energies of fast ions directly without the need for tomographic inversion for selected one-step reactions at moderate plasma temperatures. The D(p,γ)3He reaction allows the best direct fast-ion energy resolution. We illustrate our general formalism using reactions with and without intrinsic broadening of the γ-rays for the GRS diagnostic at JET.

Salewski, M., Nocente, M., Gorini, G., Jacobsen, A., Kiptily, V., Korsholm, S., et al. (2016). Fast-ion energy resolution by one-step reaction gamma-ray spectrometry. NUCLEAR FUSION, 56(4) [10.1088/0029-5515/56/4/046009].

Fast-ion energy resolution by one-step reaction gamma-ray spectrometry

NOCENTE, MASSIMO
Secondo
;
GORINI, GIUSEPPE;TARDOCCHI, MARCO
Ultimo
2016

Abstract

The spectral broadening of γ-rays from fusion plasmas can be measured in high-resolution gamma-ray spectrometry (GRS). We derive weight functions that determine the observable velocity space and quantify the velocity-space sensitivity of one-step reaction high-resolution GRS measurements in magnetized fusion plasmas. The weight functions suggest that GRS resolves the energies of fast ions directly without the need for tomographic inversion for selected one-step reactions at moderate plasma temperatures. The D(p,γ)3He reaction allows the best direct fast-ion energy resolution. We illustrate our general formalism using reactions with and without intrinsic broadening of the γ-rays for the GRS diagnostic at JET.
Articolo in rivista - Articolo scientifico
fast-ion diagnostics; gamma-ray spectrometry; tokamak;
fast-ion diagnostics; gamma-ray spectrometry; tokamak; Condensed Matter Physics; Nuclear and High Energy Physics
English
2016
56
4
046009
reserved
Salewski, M., Nocente, M., Gorini, G., Jacobsen, A., Kiptily, V., Korsholm, S., et al. (2016). Fast-ion energy resolution by one-step reaction gamma-ray spectrometry. NUCLEAR FUSION, 56(4) [10.1088/0029-5515/56/4/046009].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/128647
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