Details

Autor(en) / Beteiligte

• MacGowan, BJ
• Maxon, S
• Hagelstein, PL
• Keane, CJ
• London, RA
• Matthews, DL
• Rosen, MD
• Scofield, JH
• Whelan, DA

Titel

Demonstration of soft x-ray amplification in nickel-like ions

Ist Teil von

• Physical review letters, 1987-11, Vol.59 (19), p.2157-2160

Ort / Verlag

United States

Erscheinungsjahr

1987

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• The first observation of amplification of spontaneous emission at soft X- ray wavelengths by ions in the nickel-like sequence is reported. The ions are created by high-intensity laser irradiation of a thin foil. Gains of order 1/cm are observed on J = 0-1, 4d-4p transitions in Eu(35+) at 65.83 and 71.00 A. There is some evidence for amplification on the analogous lines at 50.26 and 56.09 A in Yb(42+). The pumping mechanism is believed to be electron collisional excitation from the ground state. The scheme should be readily scalable to produce amplification in W(46+) at 43.15 A. (Author)