Radiative double electron capture by bare nucleus with emission of one photon

TL;DR

This paper calculates the cross-section for radiative double electron capture by a bare nucleus using QED and the Line-Profile Approach, emphasizing electron correlation effects with high-accuracy corrections.

Contribution

It introduces a precise QED-based calculation of the double electron capture process, including advanced electron correlation corrections.

Findings

High-accuracy cross-section calculations for the process.

Inclusion of electron correlation effects to all orders.

Application of the Line-Profile Approach in this context.

Abstract

Calculation of the cross-section for the process of double electron capture by bare nucleus with emission of a single photon is presented. The double electron capture is evaluated within the framework of Quantum Electrodynamics (QED). Line-Profile Approach (LPA) is employed. Since the radiative double electron capture is governed by the electron correlation, corrections to the interelectron interaction were calculated with high accuracy, partly to all orders of the perturbation theory.