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Large Decay Rate Variation of 7Be in Pd and Au

Platinum and gold have the similar crystal structure but different electronic affinities, as well as different effective electron densities near the implanted ions. Both the differences favour larger decay rate of 7Be in Pd than that in Au. We measured the variation of the decay rate of 7Be implanted in Pd and Au host materials. We have found that the decay rate of 7Be in Pd is larger than that in Au by 0.8%.