1 August 1994 Reinterpretation of the neon-like titanium laser experiments
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We present results that show lasing on the 3p->3s (J = 0->1) transition in neon-like chromium (Z = 24), iron (Z = 26), and nickel (Z = 28) at 28.5, 25.5, and 23.1 nm, respectively. These results destroy the uniqueness of the lasing observed several years ago in neon-like titanium (Z = 22) at 32.6 nm on the same transition and makes highly unlikely the hypothesis that resonant photopumping is playing a significant role in the titanium laser. The titanium, chromium, iron, and nickel experiments all require a prepulse in order to lase, and our calculations suggest that the prepulse is an exciting new way to create a uniform low-density plasma that allows the proper conditions for gain and laser propagation for low-Zneon-like ions when illuminating a thick slab target. We also present an observation of hyperfine splitting in neon-like niobium at 14.6 nm and offer an explanation as to how the hyperfine effect is reducing the gain of neon-like ions with odd Z.
Joseph Nilsen, Joseph Nilsen, Brian J. MacGowan, Brian J. MacGowan, Luiz Barroca Da Silva, Luiz Barroca Da Silva, Juan C. Moreno, Juan C. Moreno, Jeffrey A. Koch, Jeffrey A. Koch, James H. Scofield, James H. Scofield, } "Reinterpretation of the neon-like titanium laser experiments," Optical Engineering 33(8), (1 August 1994). https://doi.org/10.1117/12.173558 . Submission:


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