Demonstration of X-Ray Amplification in Transient Gain Nickel-like Palladium Scheme
- 30 March 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (13), 2825-2828
- https://doi.org/10.1103/physrevlett.80.2825
Abstract
We report experimental results of x-ray amplification of spontaneous emission in a Ni-like transient collisional excitation scheme. The Ni-like plasma formation, ionization, and collisional excitation requires irradiation of a slab target by two laser pulses: a formation beam with 5 J energy of 800 ps duration and a pump beam of 5 J energy in 1.1 ps. A gain of and a product of 12.5 are measured on the transition for Ni-like Pd at 147 Å with an 8 mm line focus. The high efficiency of this scheme at “table-top” laser energies is a direct consequence of the nonstationary population inversion produced by the high intensity picosecond pulse.
Keywords
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