Oscillations in the Photoionization Cross Section ofC60

Photoionization cross section for He in the hyperspherical coordinate method

The hyperspherical coordinate method developed by Macek, Fano, Lin, and Klar to describe two-electron correlations is used for the first time to treat an atomic photoionization process. Using adiabatic approximations for both the initial and the final state, the cross section for the process He +γ +He+1s +e– is calculated and is found to lie 1% higher than the revised experimental data of Samso...

Photoionization cross section of 1s orthoexcitons in cuprous oxide

Laszlo Frazer,1,* Kelvin B. Chang,2 Kenneth R. Poeppelmeier,2,3 and John B. Ketterson1,4 1Department of Physics, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3112, USA 2Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3112, USA 3Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, ...

Vibrationally Resolved B 1s Photoionization Cross Section of BF3.

Photoelectron diffraction is a well-established technique for structural characterization of solids, based on the interference of the native photoelectron wave with those scattered from the neighboring atoms. For isolated systems in the gas phase similar studies suffer from orders of magnitude lower signals due to the very small sample density. Here we present a detailed study of the vibrationa...

Sausage oscillations in loops with a non-uniform cross-section

Context. Flaring coronal loops are often observed in microwave and sometimes in soft X-rays, as extended structures of variable cross-section or width. The quasi-periodic pulsations associated with flaring coronal loops have been interpreted in terms of standing, fast sausage magnetoacoustic modes and suggested for the diagnostics of the magnetic field outside the oscillating loop. Aims. We inv...

Nondipole effects in the triply differential cross section for double photoionization of He