Multikilovolt channelled x-ray propagation in water

Water is a nearly ideal medium for the production of confined modes of propagation with the relativistic/charge-displacement mechanism in the multikilovolt x-ray region. Calculations for λ_x ∼ 2.9 Å anchored to experimental data in the ultraviolet (248 nm) region yield stable channels having a characteristic diameter of ∼190 Å, a propagating intensity of ∼10²⁶ W cm^–2 and a loss parameter due to photoionization of ∼0.3 mJ cm^–1. These values are consistent with the generation of x-ray channels conducting coherent x-ray fluences >10¹⁰ J cm^–2 in water over a length of ∼1 m, a range a factor of ∼10⁴ greater than the distance associated with linear propagation.