Abstract
We have tested soft X-ray lasing in neon-like germanium with cylindrical targets where wave guiding and plasma confinement may affect lasing. An intense soft X-ray laser beam of 0.05 MW peak power and a narrow beam divergence (8 mrad) was produced at 23.6 nm with a 4 cm long straight cylindrical target of 0.72 mm inner diameter. Bending the cylindrical target to form a toroidal shape increased the lasing intensity by a factor of 3 accompanied with reduction of the beam divergence from 8 to 6 mrad.
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Daido, H., Murai, K., Kodama, R. et al. Collisional excitation soft X-ray laser at 23.6 nm in a laser-produced cylindrical target. Appl. Phys. B 62, 129–133 (1996). https://doi.org/10.1007/BF01081113
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DOI: https://doi.org/10.1007/BF01081113