Abstract

The paper discusses the design, the performance, and on-orbit operations of the Crystal Growth Furnace (CGF) system flown for the first time aboard the Orbiter Columbia on STS-50. Four experiments were carried out: (1) crystal growth of (Hg,Zn)Te by chemical vapor transport, (2) seeded Bridgman growth of Zn-doped CdTe, (3) Bridgman growth of Se-doped GaAs, and (4) crystal growth of (Hg,Zn)Te by directional solidification. The results of a system performance data analysis demonstrate that all the elements of the CGF system functioned flawlessly. Seven out of eight samples carried on board yielded the best possible science return to date, surpassing previous microgravity material processing experiments in space.

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