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We have observed that low energy g rays nucleate the supercooled normal to superconducting phase transition in micron-sized indium spheres. The mechanism for the nucleation in the superconducting sphere may have similarities to some aspects of the "baked Alaska" model proposed by Leggett for liquid 3 He in which cosmic rays nucleate the transition from the supercooled superfluid A phase to the B phase. [S0031-9007(97)

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