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physics.atom-ph2025
Scattering Angle Dependence of Fano Resonance Profiles in Cold Atomic Collisions Analyzed with the Complex Valued Parameter
Tanmay Singh, Raj Aryan Singh, Fumihiro Koike +2
The scattering angle dependence of Fano resonance profiles in cold atomic collisions has been theoretically studied. A complex-valued parameter with an analytical formula des…
physics.atom-ph2018
The quantum and classical Fano parameter
Masatomi Iizawa, Satoshi Kosugi, Fumihiro Koike +1
The Fano resonance has been a familiar and important feature in atomic and molecular physics for more than half a century. Typically, the combination of a discrete state with one o…
physics.atom-ph2018
Superfluorescence, free-induction decay, and four-wave mixing: propagation of free-electron laser pulses through a dense sample of helium ions
James R Harries, Hiroshi Iwayama, Susumu Kuma +9
We report an experimental and numerical study of the propagation of free-electron laser pulses (wavelength 24.3 nm) through helium gas. Ionisation and excitation populates the He$^…