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Title: Comparative Analysis of Changes in Optical- and Constructive-Materials Irradiated by Powerful Plasma-Ion Streams Generated within RPI- and PF-Devices

Abstract

The paper presents characteristics of synthetic sapphire, natural quartz and topaz after their irradiation in the RPI-IBIS facility by microsecond-pulses of hydrogen plasma with ions of energies up to tens keV. The optical reflection (measured in the 200-900 nm range) was compared with data obtained from optical and atomic force microscopy, and from the structural analysis by means of X-rays. Changes in sapphire characteristics resulted from modifications of its surface layer, while quartz and topaz appeared to be more resistive to the irradiation. The results are of importance for the selection of materials for fusion facilities and cosmic vehicles. The paper reports also on influence of pulsed deuterium plasma-ion streams on a tube made of the chromium-manganese steel. Experiments were carried out within the PF-1000 facility at power flux density of {approx}109 W/cm2 and microsecond pulses. It was found that in the re-solidified surface layers there occurred processes of the evaporation, sputtering, melting and {gamma} {yields} {alpha} phase transformation, which resulted in the hardening of the irradiated surfaces. The application of PF-type discharges for the modification of surfaces difficult-to-be-reached (such as internal surfaces of tubes) was demonstrated.

Authors:
 [1]; ; ; ;  [2]; ;  [3]; ; ;  [4];  [3];  [5];  [6]
  1. A.I. Alikhanov Institute for Theoretical and Experimental Physics, NAEA RF, Moscow 117218 (Russian Federation)
  2. A.A. Baikov Institute of Metallurgy and Material Science RAS, Moscow 119991 (Russian Federation)
  3. Institute of Plasma Physics and Laser Microfusion (IPPLM), 01-497 Warsaw (Poland)
  4. Andrzej Soltan Institute for Nuclear Studies (IPJ), 05-400 Otwock-Swierk (Poland)
  5. (IPJ), 05-400 Otwock-Swierk (Poland)
  6. Institute of Applied Optics, 03-805 Warsaw (Poland)
Publication Date:
OSTI Identifier:
20797959
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 812; Journal Issue: 1; Conference: PLASMA 2005: International conference on research and applications of plasmas; 3. German-Polish conference on plasma diagnostics for fusion and applications; 5. French-Polish seminar on thermal plasma in space and laboratory, Opole-Turawa (Poland), 6-9 Sep 2005; Other Information: DOI: 10.1063/1.2168885; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATOMIC FORCE MICROSCOPY; BEAM-PLASMA SYSTEMS; CHROMIUM; DEUTERIUM; FLUX DENSITY; HYDROGEN; ION BEAMS; IONS; IRRADIATION; KEV RANGE; MANGANESE STEELS; OPTICAL REFLECTION; PLASMA; PLASMA FOCUS; PLASMA FOCUS DEVICES; PROCESSING; QUARTZ; SAPPHIRE; SPUTTERING; STREAMS; SURFACES; X RADIATION

Citation Formats

Dubrovsky, A. V., Dyomina, E. V., Ivanov, L. I., Maslyaev, S. A., Pimenov, V. N., Gribkov, V. A., Scholz, M., Malinowska, A., Malinowski, K., Skladnik-Sadowska, E., Sadowski, M. J., Andrzej Soltan Institute for Nuclear Studies, and Kopec, G.. Comparative Analysis of Changes in Optical- and Constructive-Materials Irradiated by Powerful Plasma-Ion Streams Generated within RPI- and PF-Devices. United States: N. p., 2006. Web. doi:10.1063/1.2168885.
Dubrovsky, A. V., Dyomina, E. V., Ivanov, L. I., Maslyaev, S. A., Pimenov, V. N., Gribkov, V. A., Scholz, M., Malinowska, A., Malinowski, K., Skladnik-Sadowska, E., Sadowski, M. J., Andrzej Soltan Institute for Nuclear Studies, & Kopec, G.. Comparative Analysis of Changes in Optical- and Constructive-Materials Irradiated by Powerful Plasma-Ion Streams Generated within RPI- and PF-Devices. United States. doi:10.1063/1.2168885.
Dubrovsky, A. V., Dyomina, E. V., Ivanov, L. I., Maslyaev, S. A., Pimenov, V. N., Gribkov, V. A., Scholz, M., Malinowska, A., Malinowski, K., Skladnik-Sadowska, E., Sadowski, M. J., Andrzej Soltan Institute for Nuclear Studies, and Kopec, G.. Sun . "Comparative Analysis of Changes in Optical- and Constructive-Materials Irradiated by Powerful Plasma-Ion Streams Generated within RPI- and PF-Devices". United States. doi:10.1063/1.2168885.
@article{osti_20797959,
title = {Comparative Analysis of Changes in Optical- and Constructive-Materials Irradiated by Powerful Plasma-Ion Streams Generated within RPI- and PF-Devices},
author = {Dubrovsky, A. V. and Dyomina, E. V. and Ivanov, L. I. and Maslyaev, S. A. and Pimenov, V. N. and Gribkov, V. A. and Scholz, M. and Malinowska, A. and Malinowski, K. and Skladnik-Sadowska, E. and Sadowski, M. J. and Andrzej Soltan Institute for Nuclear Studies and Kopec, G.},
abstractNote = {The paper presents characteristics of synthetic sapphire, natural quartz and topaz after their irradiation in the RPI-IBIS facility by microsecond-pulses of hydrogen plasma with ions of energies up to tens keV. The optical reflection (measured in the 200-900 nm range) was compared with data obtained from optical and atomic force microscopy, and from the structural analysis by means of X-rays. Changes in sapphire characteristics resulted from modifications of its surface layer, while quartz and topaz appeared to be more resistive to the irradiation. The results are of importance for the selection of materials for fusion facilities and cosmic vehicles. The paper reports also on influence of pulsed deuterium plasma-ion streams on a tube made of the chromium-manganese steel. Experiments were carried out within the PF-1000 facility at power flux density of {approx}109 W/cm2 and microsecond pulses. It was found that in the re-solidified surface layers there occurred processes of the evaporation, sputtering, melting and {gamma} {yields} {alpha} phase transformation, which resulted in the hardening of the irradiated surfaces. The application of PF-type discharges for the modification of surfaces difficult-to-be-reached (such as internal surfaces of tubes) was demonstrated.},
doi = {10.1063/1.2168885},
journal = {AIP Conference Proceedings},
number = 1,
volume = 812,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}
  • The paper concerns measurements and quantitative analysis of micro-beams of fast ions produced by high-current pulse plasma discharges, which are investigated within different experimental facilities of the Rod Plasma Injector (RPI) and Plasma-Focus (PF) type. The reported ion measurements were performed mainly within the RPI-IBIS device at the IPJ in Swierk and within the large PF-1000 facility at the IPPLM in Warsaw. The pulsed ion streams were recorded by means of ion-pinhole cameras equipped with solid-state nuclear track detectors (SSNTD). Before their irradiation those detectors were calibrated, i.e. their responses to different ion species of various energies were determined. Formore » this purpose there were used mono-energetic ion beams (obtained from particle accelerators) or ion tracks measured along the ion parabolas recorded by means of a Thomson-type spectrometer. During the described ion measurements the ion-pinhole cameras were placed at different angles to the symmetry axes of the investigated experimental facilities.« less
  • The paper presents results of recent experimental studies within the PF-1000 plasma-focus facility [1], which were performed during the free propagation of pulsed plasma-ion streams inside the vacuum chamber, and during their interaction with different targets. Optical spectra were recorder by means of a Mechelle registered 900 spectrometer operated with some delays in relation to the discharge current peculiarity (dip) and with exposition varied from 100 ns to 100 {mu}s. The recorded spectral lines were used to estimate the density of the free-propagating plasma stream. The electron concentration, as estimated from the Stark broadening of the D{sub {beta}} line recordedmore » at a distance of z = 30 cm from the electrode ends, changed from about 4x10{sup 17} cm{sup -3} to 2x10{sup 16} cm{sup -3} in about 30 {mu}s. Analogous spectroscopic measurements were carried out in experiments performed with targets made of carbon and sintered tungsten, which were placed at a distance of 15 cm from the electrode outlet, where q = 10{sup 10} W/cm{sup 2}, and at a distance of 30 cm, where q = 10{sup 9} W/cm{sup 2}. Particular attention was paid to investigation of a plasma layer formed in the front of the target. In that case the electron density, as estimated on the basis of carbon-and deuterium-ion lines, changed from about 3x10{sup 18} cm{sup -3} to 3x10{sup 16} cm{sup -3} in 30 {mu}s. For the target made of the sintered tungsten, which was placed at a distance of 30 cm, the recorded optical spectr a showed intense D{sub {alpha}} and D{sub {beta}} lines as well as CII-CIV lines, which covered tungsten (WI and WII) lines.« less
  • The spectroscopic technique used to measure the parameters of the plasma jets generated in the plasma focus discharge and those of the plasma of the immobile gas through which these jets propagate is described. The time evolution of the intensities and shapes of spectral lines in experiments carried out with helium at the PF-3 facility was studied by means of electron-optical streak cameras. The plasma electron temperature, T ≈ 4–5 eV, was determined from the intensity ratio of two spectral lines, one of which (λ{sub 1} = 5876 Å) belongs to neutral helium, while the other (λ{sub 2} = 4686more » Å), to hydrogen-like helium ions. The plasma density at different time instants was determined from the Stark broadening of these lines in the electric fields of different nature. The plasma density is found to vary from 4 × 10{sup 14} to 2 × 10{sup 17} cm{sup −3}.« less