Articolo in rivista, 2013, ENG, 10.1088/0741-3335/55/7/074014
M Tardocchi (1); M Nocente (1,2); and G Gorini (1,2)
(1) Istituto di Fisica del Plasma, EURATOM-ENEA-CNR Association, Milano, Italy (2) Dipartimento di Fisica 'G. Occhialini', Università degli Studi di Milano Bicocca, Milano, Italy
High resolution neutron emission spectroscopy (NES) and gamma-ray spectroscopy (GRS) measurements of fast ions in high power fusion plasmas are reviewed. NES is a well established diagnostics of the velocity distribution of fast fuel ions and was recently used to investigate the interaction of energetic ions with MHD instabilities. High energy resolution GRS on fusion plasmas is a more recent application and was shown to provide information on the distribution function of fast minority ions accelerated by ICRH, such as He-4 and He-3. Starting from measurements on today's high power D plasmas, fast ion measurements with NES and GRS in a DT burning plasma of next step tokamaks, such as ITER, are discussed. The enhanced neutron and gamma-ray fluxes expected on ITER will allow for time-resolved measurements of the fast fuel and minority ion dynamics in the ms time scale. The intensity of the alpha knock-on component in the 14 MeV neutron spectrum and of the 4.44 and 3.21 MeV gamma-ray peaks from the Be-9(alpha,n gamma) C-12 reaction is studied as a diagnostics for the alpha particle slowing down distribution in a DT plasma. The results show that the two techniques are sensitive to different regions of the alpha particle phase space and thus provide complementary information.
Plasma physics and controlled fusion (Online) 55 (7), pp. 074014–?
Gorini Giuseppe, Nocente Massimo, Tardocchi Marco
ID: 246823
Year: 2013
Type: Articolo in rivista
Creation: 2013-08-05 10:29:07.000
Last update: 2016-03-11 14:43:03.000
CNR institutes
EU Projects
External IDs
CNR OAI-PMH: oai:it.cnr:prodotti:246823
DOI: 10.1088/0741-3335/55/7/074014
ISI Web of Science (WOS): 000320373200015
Scopus: 2-s2.0-84879108632