Probe diagnostics of laboratory and ionospheric rarefied plasma flows

2013 ◽  
Vol 19 (1(80)) ◽  
pp. 13-19
Author(s):  
V.A. Shuvalov ◽  
◽  
A.A. Lukenjuk ◽  
N.I. Pismenny ◽  
S.N. Kulagin ◽  
...  
Keyword(s):  
Plasma Flows ◽  
Probe Diagnostics

SPECTROSCOPIC AND PROBE DIAGNOSTICS OF CARBON PLASMA FLOWS OF A PULSE VACUUM ARC

2010 ◽  
Vol 14 (1-2) ◽  
pp. 157-163 ◽  
Author(s):  
I. P. Smyaglikov ◽  
N. I. Chubrik ◽  
S.V. Goncharik ◽  
V. V. Azharonok ◽  
L. E. Krat'ko ◽  
...  
Keyword(s):  
Vacuum Arc ◽  
Plasma Flows ◽  
Probe Diagnostics ◽  
Carbon Plasma

scholarly journals Simulation of the interaction of spacecraft with the rarefied ionospheric plasma

2021 ◽  
Vol 2021 (2) ◽  
pp. 36-45
Author(s):  
V.A. Shuvalov ◽  
◽  
Yu.P. Kuchugurnyi ◽  
M.I. Pysmennyi ◽  
S.M. Kulahin ◽  
...  
Keyword(s):  
Ultraviolet Radiation ◽  
Atomic Oxygen ◽  
Ionospheric Plasma ◽  
Vacuum Ultraviolet ◽  
Polymer Materials ◽  
Plasma Flows ◽  
Vacuum Ultraviolet Radiation ◽  
Probe Diagnostics ◽  
Magnetohydrodynamic Interaction

Principles of simulation of the physical-chemical and electromagnetic interaction of a spacecraft with the near-satellite environment and principles of probe diagnostics of rarefied plasma flows onboard a spacecraft are stated. Equivalence criteria are formulated for the interaction of a spacecraft with the near-satellite environment and hypersonic rarefied plasma flows on dedicated setups, in particular on the plasmaelectrodynamic setup of the Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine, which has the status of the National Patrimony of Ukraine. The features of spacecraft interaction with the near-satellite environment were studied along the following three lines: - degradation of the materials and performance characteristics of spacecraft components in a long-term orbital service: - magnetohydrodynamic interaction of a spacecraft with hypersonic rarefied plasma flows; - probe diagnostic of rarefied plasma flows onboard a spacecraft. Along the first line, a calculation-and-experiment procedure was developed to evaluate the power decrease of spacecraft silicon solar batteries under long-term (~ 10 years) exposure to the space factors and the near-satellite environment in circular orbits. Principles of accelerated life tests for the resistance of spacecraft polymer materials to long-term exposure to atomic oxygen flows and vacuum ultraviolet radiation were developed. Simultaneous exposure of polymers to atomic oxygen and vacuum ultraviolet radiation results in the synergic effect of mass loss by materials that contain a monomer of the (CH)n group. Along the second line, models were formulated for magnetohydrodynamic interaction in the magnetized spacecraft – ionospheric plasma system. It was shown that the interaction of a ?0,8 – 1.5 T magnetic field of a space debris object (in particular, a spent spacecraft) with the ionospheric plasma produces an electromagnetic drag force sufficient for removing it to a low orbit followed by its burn-up in the dense atmosphere. Along the third line, procedures were developed for ionospheric plasma probe diagnostics using onboard instrumentation that includes mutually orthogonal cylindrical electrical probes and a two-channel neutral-particle detector. It was shown that this instrumentation with the use of proprietary output signal interpretation algorithms and procedures allows one to locate sources of space-time disturbances in inospheric plasma parameters caused by natural and technogeneous catastrophic phenomena on the subsatellite track.

Probe diagnostics of laboratory and ionospheric rarefied plasma flows

2013 ◽  
Vol 56 (4) ◽  
pp. 459-467 ◽  
Author(s):  
V. A. Shuvalov ◽  
N. I. Pis’mennyi ◽  
D. N. Lazuchenkov ◽  
G. S. Kochubey
Keyword(s):  
Plasma Flows ◽  
Probe Diagnostics

Cylindrical-probe diagnostics of plasma flows effusing from technological plasmatrons

2017 ◽  
Vol 46 (2) ◽  
pp. 169-173 ◽  
Author(s):  
V. A. Kotel’nikov ◽  
M. V. Kotel’nikov
Keyword(s):  
Plasma Flows ◽  
Cylindrical Probe ◽  
Probe Diagnostics

scholarly journals Application prospects of parallel structure mechanisms in probe diagnostics of plasma flows

2019 ◽  
Vol 23 (136) ◽  
pp. 92-97
Author(s):  
G.S. Filippov ◽  
◽  
V.A. Glasunov ◽  
A.K. Aleshin ◽  
G.V. Rashoyan ◽  
...  
Keyword(s):  
Parallel Structure ◽  
Plasma Flows ◽  
Probe Diagnostics ◽  
Application Prospects

Langmuir Probe Diagnostics and Spectroscopic Measurements in the Post-Discharge of a Dinitrogen/Methane Microwave Plasma

1995 ◽  
Vol 5 (4) ◽  
pp. 435-445 ◽  
Author(s):  
A. M. Diamy ◽  
J. C. Legrand ◽  
V. Hrachová
Keyword(s):  
Langmuir Probe ◽  
Microwave Plasma ◽  
Post Discharge ◽  
Spectroscopic Measurements ◽  
Probe Diagnostics

An Experimental Multiple-Organ Model for the Study of Regional Net Release/Uptake Rates of Tissue-type Plasminogen Activator in the Intact Pig

1997 ◽  
Vol 78 (03) ◽  
pp. 1150-1156 ◽  
Author(s):  
Christina Jern ◽  
Heléne Seeman-Lodding ◽  
Bjӧrn Biber ◽  
Ola Winsӧ ◽  
Sverker Jern
Keyword(s):  
Plasminogen Activator ◽  
Multiple Organ ◽  
Tissue Type ◽  
Hepatic Veins ◽  
Plasma Flows ◽  
Tissue Type Plasminogen Activator ◽  
Type Plasminogen Activator ◽  
Uptake Rates ◽  
Net Release

SummaryExperimental data indicate large between-organs variations in rates of synthesis of tissue-type plasminogen activator (t-PA), which may reflect important differences in the capacity for constitutive and stimulated t-PA release from the vascular endothelium. In this report we describe a new multiple-organ experimental in vivo model for simultaneous determinations of net release/uptake rates of t-PA across the coronary, splanchnic, pulmonary, and hepatic vascular beds. In eleven intact anesthetized pigs, blood samples were obtained simultaneously from the proximal aorta, coronary sinus, pulmonary artery, and portal and hepatic veins. Plasma flows were monitored separately for each vascular region. Total plasma t-PA was determined by ELISA with a porcine t-PA standard. Regional net release/uptake rates were defined as the product of arteriovenous concentration gradients and local plasma flows. The net release of t-PA across the splanchnic vascular bed was very high, with a mean output of 1,919 ng total t-PA X min-1 (corresponding to 90 ng per min and 100 g tissue). The net coronary t-PA release was 68 ng X min-1 (30 ng X min-1 X 100 g"1)- Pulmonary net fluxes of t-PA were variable without any significant net t-PA release. The net hepatic uptake rate was 4,855 ng X min-1 (436 ng X min-1 X 100 g-1). Net trans-organ changes of active t-PA mirrored those of total t-PA. The results demonstrate marked regional differences in net release rates of t-PA in vivo. The experimental model we present offers new possibilities for evaluation of regional secretion patterns in the intact animal.

FORMATION OF Nb-CONTAINING ALLOYS IN THE SURFACE LAYER OF MATERIALS BY COMPRESSION PLASMA FLOWS

2015 ◽  
Vol 19 (2) ◽  
pp. 153-167 ◽  
Author(s):  
Nikolai Cherenda ◽  
Andrej K. Kuleshov ◽  
Vitali I. Shymanski ◽  
Vladimir V. Uglov ◽  
N. V. Bibik ◽  
...  
Keyword(s):  
Surface Layer ◽  
Plasma Flows ◽  
Compression Plasma Flows

STRUCTURE OF THE AUSTENITIC STEEL SURFACE LAYER SUBJECTED TO COMPRESSION PLASMA FLOWS IMPACT

2020 ◽  
Vol 24 (3) ◽  
pp. 211-225
Author(s):  
Nikolai N. Cherenda ◽  
Vladimir V. Uglov ◽  
Yu. V. Martinovich ◽  
I. A. Betanov ◽  
Valiantsin M. Astashynski ◽  
...  
Keyword(s):  
Surface Layer ◽  
Austenitic Steel ◽  
Steel Surface ◽  
Plasma Flows ◽  
Compression Plasma Flows
Sign in / Sign up

Export Citation Format

Share Document