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VOLUME 75 (2002) | ISSUE 10 | PAGE 591
Laser action in a gas condensation in the vicinity of a hot star
PACS: 95.75.Fg, 95.85.Jq, 98.38.Gt, 98.58.Bz
Abstract
In the region around 1 μ m we have found laser action in a quantum transition between highly excited states in Fe II, with its higher levels being optically pumped by the intense H Lyα  radiation (1215 Å) formed in the ionized HII region of a gas condensation (blob B) in the close vicinity of the central star in η  Carinae.