title: Scaling law for energy-momentum spectra of atomic photoelectrons.
abstract: A scaling law which was used to classify photoelectron angular distributions (PADs) is now extended to photoelectron kinetic energy spectra. Both a theoretical proof and an independent verification are presented. Considering PADs are of photoelectron momentum spectra, this extension really extends the scaling law to the entire energy-momentum spectra. The scaling law for photoelectron energy-momentum spectra applies to both directly ionized and rescattered photoelectrons. Re-scaling experimental input parameters without loosing the physical essence with this scaling law may ease the experimental conditions and reduce the material and the energy consumptions in the experiments.
authors: State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optical and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
authors: Huiliang
authors: H
authors: Ye
authors: Yan
authors: Y
authors: Wu
authors: Jingtao
authors: J
authors: Zhang
authors: D-S
authors: DS
authors: Guo