The interaction of an intense laser pulse with large (∼100Å) clusters present in pulsed gas jets is shown to produce novel plasmas with electron temperatures far in excess of that predicted by above-threshold ionization theory. The enhanced absorption of the laser light by the dense clusters results in the production of high ion charge states via collisional ionization resulting in strong x-ray emission from the hot plasma.
© 1995 American Physical Society
T. Ditmire, T.D. Donnelly, R.W. Falcone, M.D. Perry, "Strong X-ray Emission from High-Temperature Plasmas Produced by Intense Irradiation of Clusters," Phys. Rev. Lett. 75, 3122 (1995). doi: 10.1103/PhysRevLett.75.3122