نتایج جستجو برای: energetic mixture
تعداد نتایج: 115755 فیلتر نتایج به سال:
Observations of strong solar wind proton flux correlations with ROSAT X-ray rates along with high spectral resolution Chandra observations of X-rays from the dark Moon show that soft X-ray emission mirrors the behavior of the solar wind. In this paper, based on an analysis of an X-ray event observed by XMM-Newton resulting from charge exchange of high charge state solar wind ions and contempora...
Free-standing transmission gratings will be used in a new generation of space instruments for magnetosphere energetic neutral atom (ENA) imaging which requires efficient suppression of the exceptionally strong background extreme ultraviolet (EUV) and UV radiation. The first results of the experimental study of grating (period 200 nm) optical properties in the 50130 urn wavelength range are pres...
[1] On 31 March 2001 a fast solar wind transient with strong southward interplanetary magnetic field Bz produced a large geomagnetic storm at Earth, with a drop in the Dst index to 350 nT between 0400 and 0900 UT. The Earth’s magnetosphere was very compressed during this interval, with the bow shock crossing geosynchronous orbit on at least two occasions. Here we present space-based and ground-...
We show arguments that at least part of the inner source of pickup ions and energetic neutral atoms (∼ 1 keV) might be the material released by sungrazing comets. Based on the monthly apparition statistics we postulate that the actual number of sungrazing comets may be even higher than observed. We point out that an overwhelming majority of the observed sungrazers belong to the Kreutz group of ...
We discuss recently reported observations of energetic neutral hydrogen atoms (ENAs) from an X9 solar flare/coronal mass ejection event on 5 December 2006, located at E79. The observations were made by the Low Energy Telescopes (LETs) on STEREO A and B. Prior to the arrival of the main solar energetic particle (SEP) event at Earth, both LETs observed a sudden burst of 1.6 to 15 MeV energetic ne...
Glycidyl Azide Polymer is one of the most important energetic binders that is used in the composite solid propellant formulation. GAP is a unique binder with a positive heat of formation (+117.2 kJ⁄mol). In addition, GAP has good thermal and physical properties such as low glass transition temperature, low viscosity and high density compared to other energetic binders. GAP can be used as a bin...
A way to increase the specific impulse of solid propellants is using the energetic components as energetic binder or energetic plasticizer in the propellant formulations. Hydroxy terminated poly butadiene (HTPB) is the one of pre-polymer which was specifically synthesized for its use as a propellant. Incorporating of PEG into HTPB chains lead to increasing the polarity of binder and maybe preve...
In this paper, the features and main nuances of electrophoretic deposition energetic nanoscale powder materials based on Al CuOx were investigated formulated. We have successfully demonstrated advantage using suspension non-stop ultrasonic mixing horizontal electrode placement during deposition. The possibility local an electrically conductive topological pattern was shown. influence mass depos...
Abstract This conference report summarizes the contributions to, and discussions at joint meeting of 9th Asia Pacific-Transport Working Group (APTWG) & EU-US Transport Task Force (TTF) workshop held online, hosted by Kyushu University, Japan, during 6-9 July 2021. The topics were organized under five main topics: 1)Isotope effect on transport physics isotope mixture plasma, 2)Turbulence spr...
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