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Population inversion for transitions in the VUV are predicted theoretically in laser-produced plasmas. The calculations are based on a time-dependent model that treats the excitation, ionization, and recombination dynamics of a dense argon plasma. Gains in excess of 103 cm−1 are obtained for the 3s-3p transition in carbonlike argon XIII for over 1000 psec.
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Davis et al. (1976) studied this question.
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