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A complex plasma injection device was investigated. It consists of a coaxial plasma accelerator with gas preionization and a spatially periodic sign-changing magnetic field used to guide the high-velocity plasma stream and to separate the slow one. A high-energy plasma stream with a total energy of > 160 J (4 -4.5 x 10 17 particles) and an amount of impurities not exceeding 1% was obtained at the output of the magnetic system. It is seen that the guiding magnetic field does not penetrate into the leading fast plasma puff, which implies that the connection of the injector system to the magnetic traps should be simplified when a complex plasma injector of such type is used.

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Two series/parallel arrays of ten cold-electron bolometers with superconductor-insulator-normal tunnel junctions were integrated in orthogonal ports of a cross-slot antenna. To increase the dynamic range of the receiver, all single bolometers in an array are connected in parallel for the microwave signal by capacitive coupling. To increase the output response, bolometers are connected in series for dc bias. With the measured voltage-to-temperature response of 8.8 µV/mK, absorber volume of 0.08 µm 3 , and output noise of about 10 nV/Hz 1/2 , we estimated the dark electrical noise equivalent power (NEP) as NEP = 6 * 10 −18 W/Hz 1/2 . The optical response down to NEP = 2 * 10 −17 W/Hz 1/2 was measured using a hot/cold load as a radiation source and a sample temperature down to 100 mK. The fluctuation sensitivity to the radiation source temperature is 1.3 * 10 −4 K/Hz 1/2 . A dynamic range over 43 dB was measured using a backward-wave oscillator, a variable polarization grid attenuator, and cold filters/attenuators.