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The parameters of neutron emission from the neck of the condensed Z-pinch, were measured at an S-300 installation (2 MA, 100 ns). Profiled loads with central parts made from microporous deuterated polyethylene (with a density of 100 mg/cm3) were used in the experiments. Neutron emission parameters were measured by the time-of-flight (TOF) method. Neutrons were registered using four flight bases with 10 scintillation detectors which were placed at two axial and two radial directions. It was found that the mean neutron energy, determined by the TOF method, turned out to be anisotropic. The average energy of neutrons emitted along the axis towards the cathode, was shifted to higher energy (2.6-2.8 MeV) and the average energy of neutrons emitted towards the anode, was shifted to lower energy (2.1-2.3 MeV) compared to the d-d reaction neutron energy 2.45 MeV. The average energy of neutrons, emitted in two opposite radial directions, was close to 2.45 MeV. The half-width of the energy distributions reconstructed for all directions was 400-500 keV. The analysis of the experimental results demonstrated that the found phenomena could be explained by a slowly decaying high energy tail in the energy distribution of colliding deuterons. The maximal neutron yield was of 6 x 109.
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333--336
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Bibliogr. 13 poz., rys.
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- Institute of Hydrogen Energetic and Plasma Technologies, National Research Center "Kurchatov Institute", 1 Academic Kurchatov Sq., 123182 Moscow, Russia, Tel.: +7 499 196 7978, +7 926 329 1687, Fax: +7 499 196 7278, kazakoved82@gmail.com
Bibliografia
- 1. Akunets AA, Anan’ev SS, Bakshaev YuL et al. (2009) Measuring of spatio-temporal characteristics z-pinch from deuterated polyethylene. Eur Phys J D 54;2:499–502
- 2. Bakshaev YuL, Blinov PI, Vikhrev VV et al. (2001) Study of the plasma in a performed pinch constriction. Plasma Phys Rep 27:1039–1047
- 3. Bakshaev YL, Blinov PI, Vikhrev VV et al. (2006) Measurement of neutron emission from a z-pinch constriction. Plasma Phys Rep 32;7:531–539
- 4. Chernenko AS, Gorbulin YuG, Kalinin YuG et al. (1996) S-300, new pulsed power installation in Kurchatov Institute, investigation of stable liner implosion. In: Proc of the 11th Int Conf on High Power Particle Beam Data, Prague. Vol. 1, pp 154–157
- 5. Krokhin ON, Nikulin VV, Volobuev IV (2004) Compact activation detectors for measuring of absolute neutron yield by powerful pulsed plasma installations. Czech J Phys 54;Suppl C:359–364
- 6. Rezac K, Klir D, Kubes P et al. (2006) Monte-Carlo simulation for reconstruction of neutron time-resolving energy distribution in D-D fusion reaction. Czech J Phys B 56:357–363
- 7. Tiseanu I, Deer G, Kies W (1996) A Monte-Carlo technique for the reconstruction of time depent spectra of short-pulses neutron sources. Nucl Instrum Methods Phys Res A 373:73–80
- 8. Vikhrev VV, Dobryakov AV, Rozanova GA, Yushmanov PN (1989) Occurrence of anisotropy in Z-pinches. Fizika Plazmy 15:584–588
- 9. Vikhrev VV, Ivanov VV (1985) Propagation of high-temperature plasma along a Z-pinch. Dokl AN USSR 30:492–495 (in Russian)
- 10. Vikhrev VV, Korolev VD (2007) Neutron generation from Z-pinches. Plasma Phys Rep 33;5:356–380
- 11. Vikhrev VV, Mironenko-Marenkov AD (2012) On the spectrum of Z-pinch plasma neutrons. Plasma Phys Rep 38;3:356–380
- 12. Yan’kov VV (1991) Z-Pinches. Fizika Plazmy 17:521–529
- 13. Zaidel AN, Shreider EYa (1967) VUV spectroscopy. Fizmatgiz, Moscow (in Russian)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ8-0023-0014