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Stimulated emission has been observed in the P -branch lines of the 3-10, 4-11, 5-12, 6-13, and 7-13 Lyman bands (v^'-v^'', B¹Σᵤ⁺→X¹Σg⁺) of molecular hydrogen near 1600 {}. Light pulses of approximately 2 nsec duration and 1.5 kW maximum power were produced using a Blumlein parallel-plate transmission line discharging through hydrogen gas at pressures between 20 and 150 Torr.
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R. T. Hodgson (1970) studied this question.
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