Mechanism of formation of a smooth solid layer of hydrogen inside a microshell

Elena R. Koresheva; Anton A. Tonshin; Igor E. Osipov; Oleg V. Isheinov; Lev S. Yaguzinskiy

doi:10.1117/12.536884

12 December 2003 Mechanism of formation of a smooth solid layer of hydrogen inside a microshell

Elena R. Koresheva, Anton A. Tonshin, Igor E. Osipov, Oleg V. Isheinov, Lev S. Yaguzinskiy

Proceedings Volume 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter; (2003) https://doi.org/10.1117/12.536884
Event: ECLIM 2002: 27th European conference on Laser Interaction with Matter, 2002, Moscow, Russian Federation

Abstract

Earlier we have proposed and demonstrated a mechanism of formation of a smooth thermo stable glassy solid layer of hydrogen inside a microshell based on introduction of minor dopes into the fuel (so called minor dopes technique or MD-technique). This paper offers a more detailed overview and optimization of the method. The object under consideration is a microshell of ~1 mm dia filled with gaseous hydrogen H₂ and a minor dope of HD; density of H₂ is less than its critical density (30 kg/m³). It is found that for glassy structure formation it is necessary to maintain uniform dope distribution in the hydrogen volume during the layering process. The calculations have shown that this is achieved by (a) implementation of the drop condensation mode within the time period of t < 0.1 - 0.2 sec, and (b) solidification of the liquid phase within the time period of t < 10 sec. The results of calculations are confirmed by relevant experimental research work. Further model development involves research of specific features of formation of the glassy layer of D₂-fuel with minor dopes of HD or DT as well as analysis of the potential use of MD-technique for larger fuel quantities (IFE target).

Citation Download Citation

Elena R. Koresheva, Anton A. Tonshin, Igor E. Osipov, Oleg V. Isheinov, and Lev S. Yaguzinskiy "Mechanism of formation of a smooth solid layer of hydrogen inside a microshell", Proc. SPIE 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter, (12 December 2003); https://doi.org/10.1117/12.536884

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