1. A. F. Tseluyko, V. T. Lazurik, D. L. Ryabchikov, et al., Probl. At. Sci. Technol., Ser. Plasma Physics, No. 6, 176 (2010).
2. N. Georgescu, C. G. Serbñaescu, and G. Sandolache,, Nukleonika 46(Suppl. 11), 17 (2001).
3. M. F. Artamonov, V. I. Krasov, and V. L. Papernyi, Tech. Phys. Lett. 27, 1018 (2001).
4. I. G. Brown, Rev. Sci. Instrum. 65, 3061 (1994).
5. E. N. Abdullin, V. M. Zaslavskii, and S. V. Loginov, Tech. Phys. 36, 714 (1991).