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LiH as an energy absorber

Explore solving issues with LiH as an energy absorber due to high coefficient of thermal expansion, low melting temperature, and variable conductivity. Solutions involve decreasing outer temperature and ionization cooling.

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LiH as an energy absorber

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  1. LiH as an energy absorber Temperature profile in LiH, Issue and concepts to solve issues

  2. MATERIAL CHARATERSITC: • High co-officient of thermal expansion compared to co-efficient of berryllium • Low melting temperature 961k • Variable conductivity (decreasing with temperature) • Explosive material

  3. ISSUES: • Above 2 mw, LiH absorber starts melting at center (attached pdf file of calculation) • Decrease in conductivity with increasing temperature puts more resistance for heat flow. • Current design shows that heat transfer takes place only along radial direction3

  4. Temperature profile for 1 mw K T

  5. SOLUTION: • Decreasing outside temperature: (attached excel sheet) • Passing law pressure gas between LiH absorber to cool LiH. (attached fig.) Since hellium and hydrogen both are ideal candidate for ionization cooling

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