Details

Autor(en) / Beteiligte

• Klir, D
• Kubes, P
• Rezac, K
• Cikhardt, J
• Kravarik, J
• Sila, O
• Shishlov, A V
• Kovalchuk, B M
• Ratakhin, N A
• Kokshenev, V A
• Labetsky, A Yu
• Cherdizov, R K
• Fursov, F I
• Kurmaev, N E
• Dudkin, G N
• Nechaev, B A
• Padalko, V N
• Orcikova, H
• Turek, K

Titel

Efficient neutron production from a novel configuration of deuterium gas-puff z-pinch

Ist Teil von

• Physical review letters, 2014-03, Vol.112 (9), p.095001-095001, Article 095001

Ort / Verlag

United States

Erscheinungsjahr

2014

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• A novel configuration of a deuterium z pinch has been used to generate fusion neutrons. Injecting an outer hollow cylindrical plasma shell around an inner deuterium gas puff, neutron yields from DD reactions reached Y(n)=(2.9 ± 0.3) × 10(12) at 700 ns implosion time and 2.7 MA current. Such a neutron yield means a tenfold increase in comparison with previous deuterium gas puff experiments at the same current generator. The increase of beam-target yields was obtained by a larger amount of current assembled on the z-pinch axis, and subsequently by higher induced voltage and higher energies of deuterons. A stack of CR-39 track detectors on the z-pinch axis showed hydrogen ions up to 38 MeV. Maximum neutron energies of 15 and 22 MeV were observed by radial and axial time-of-flight detectors, respectively. The number of DD neutrons per one joule of stored plasma energy approached 5 × 10(7). This implies that deuterium gas puff z pinches belong to the most efficient plasma-based sources of DD neutrons.