A McPherson et al 1994 J. Phys. B: At. Mol. Opt. Phys. 27 L637 doi:10.1088/0953-4075/27/18/005
A McPherson, K Boyer and C K Rhodes
Show affiliationsIndividual multiphoton excited clusters can exhibit superradiance in the 1-10 keV spectral region. This process may (1) confer a high level of coherence on the emission of an X-ray amplifier, (2) provide control of the emitted wavelength, and (3) produce X-ray pulses having durations <or approximately=10 fs. For a transition having a lifetime determined by radiative decay, the lower bound on the wavelength of the superradiance for a cluster of n atoms having an interparticle spacing of r0 is lambda xr approximately 2.9r0n-16/. For a system having a lifetime governed by Auger decay, the corresponding upper bound on the wavelength is lambda xa=(2 pi )2n13/( mu 2 tau a/r02h(cross)), with mu representing the transition dipole matrix element and tau a-1 denoting the Auger decay rate.
32.50.+d Fluorescence, phosphorescence (including quenching)
32.80.Rm Multiphoton ionization and excitation to highly excited states
32.80.Hd Auger effect (including Coster-Krönig transitions)
32.70.Cs Oscillator strengths, lifetimes, transition moments
Issue 18 (28 September 1994)
A McPherson et al 1994 J. Phys. B: At. Mol. Opt. Phys. 27 L637
Jack Davis et al 2005 J. Phys. B: At. Mol. Opt. Phys. 38 L309
K Boyer and C K Rhodes 1994 J. Phys. B: At. Mol. Opt. Phys. 27 L633
K Boyer et al 1994 J. Phys. B: At. Mol. Opt. Phys. 27 4373
Alex B Borisov et al 2002 J. Phys. B: At. Mol. Opt. Phys. 35 L461
A B Borisov et al 2001 J. Phys. B: At. Mol. Opt. Phys. 34 2167
Alex B Borisov et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 3433
W Andreas Schroeder et al 1998 J. Phys. B: At. Mol. Opt. Phys. 31 5031
A McPherson et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 L767
Alex B Borisov et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 L285