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Measurements of the D(d,n) and /sup 3/He(d,p) reaction yields for the 1-MJ plasma focus device operating with a D/sub 2/-/sup 3/He gas mixture

Journal Article · · Nucl. Technol./Fusion; (United States)
OSTI ID:6119190
The ratio R(D-D)/R(D-/sup 3/He) of yields of fusion reactions was used as a diagnostic tool for studying the effective ion energy of plasma produced in the 1-MJ plasma focus device at Frascati. The device is operated in the neutron-optimized mode at energies of 250, 390, and 490 kJ. The reaction yields are determined by measuring the activity induced in the /sup 63/Cu(p,n)/sup 63/Zn (E /SUB p/ = 14.6 MeV) and /sup 115/In(n,n') /SUP 115m/ In (En = 2.45 MeV) reactions. A detailed discussion of the energy slowing down of neutrons is given and a new calibration of the (p,n) cross section of the monitor reaction is performed. The measurements are carried out simultaneously for the end-on and side-on positions, and no significant differences are observed. A comparison with other experimental data is given. Conversion of the ratio of fusion reaction yields to ion temperatures or effective ion energies of streams interacting with a cold gas medium gives kT /SUB i/ approx. = 14 keV or E /SUB d/ (kT /SUB e/ = 0.5 keV) = 72 keV, respectively.
Research Organization:
Associazione EURATOM-ENEA sulla Fusione, Centro Ricerche Energia Frascati, Rome
OSTI ID:
6119190
Journal Information:
Nucl. Technol./Fusion; (United States), Journal Name: Nucl. Technol./Fusion; (United States) Vol. 4:2 PT 1; ISSN NTFUD
Country of Publication:
United States
Language:
English

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