RnD ISAN develops and produces detectors based on micro channel plates (MCP) for imaging of pulsed plasma sources in X-ray and VUV spectral ranges. Various types of these fast detectors have 5 – 25 ns time resolution and are gated by the electrical pulses with the amplitudes of 4-6 kV. Electrical pulses with needed time delay are formed by a special generator.
Detectors consist of a single MCP plate and a phosphor screen mounted on a metal housing. The phosphor screen is deposited on a fiber optic or glass plate which serves also as a vacuum window. The image from the phosphor screen can be recorded using a photographic film or a digital camera.
The standard configurations of the MCP have a plate diameter of 46 mm or 56 mm with open channels with diameters of 12 or 15 μm. Its working surface can be divided into 4 sectors or several stripes for getting frames of plasma images or spectra with time resolution.
|Channel diameter||Channel to channel distance||Phosphor type||Fiber optic channel diameter||Fiber optic channel to channel distance|
|12 μм||15 μм||ZnS(Cu) λ=520 nм||5 μм||8 μм|
VUV spectrum of fast gas discharge (argon pressure of 80 Pa) [Antsiferov P.S., Dorokhin L.A., Koshelev K.N. “Plasma production by means of discharge in a spherical cavity.” J. Appl. Phys. 107 (10), 103306 (2010)].
1. P.S. Antsiferov, L.A. Dorokhin, E.Yu. Khautiev, Yu.V. Sidelnikov, D.A. Glushkov, I.V. Lugovenko, K.N. Koshelev. “Dynamics of a plasma in a capillary discharge driven by a plasma focus operated in the mode of a plasma switch opening.” J. Phys. D: Appl. Phys. 31, 2013-2017 (1998).
2. P.S. Antsiferov, L.A. Dorokhin, A.V. Nazarenko, D.A. Glushkov, R.V. Fedoseev, Yu.V. Sidelnikov, K.N. Koshelev. “Fast capillary discharge driven by inductive storage with plasma erosion opening switch.” 7th International Conference on X-ray Lasers, Saint-Malo, France, 2000. P58, page 120.
3. P.S. Antsiferov, L.A. Dorokhin, K.N. Koshelev, A.V. Nazarenko. “Axially inhomogeneous plasma in fast discharges for creation of population inversion in soft x-ray region.” J. Phys. D: Appl. Phys. 37, 2527-2530 (2004),
4. A.V. Nazarenko, P.S. Antsiferov, L.A. Dorokhin, K.N. Koshelev. “Evolution of a Capillary Discharge Induced by a Semiconductor Current Generator.” Plasma Physics Reports 30 (3), 249 – 254 (2004).
5. P.S. Antsiferov, L.A. Dorokhin, K.N. Koshelev, L.S. Mednikov, A.V. Nazarenko, “Specific Features of the Intensity Alteration in Different Orders of a Grazing- Incidence Diffraction Grating”, Optics and Spectroscopy, 101, (3), pp. 470-472 (2006).
6. P.S. Antsiferov, L.A. Dorokhin, Yu.V. Sidelnikov, K.N. Koshelev, “Fast discharge in a plasma gun with hemispherical insulator.” J. Appl. Phys. 105 (10), 103305 (2009).
7. P.S. Antsiferov, L.A. Dorokhin, K.N. Koshelev. “Plasma production by means of discharge in a spherical cavity.” J. Appl. Phys. 107 (10), 103306 (2010).
8. P.S. Antsiferov, L.A. Dorokhin, K.N. Koshelev, “Dynamics of VUV Spectra in Fast Capillary Discharge”, Optics and Spectroscopy, 111, (3), pp.342-345 (2011).