Fast calculator for X-ray emission due to Radiative Recombination and Radiative Electron Capture in relativistic heavy-ion atom collisions

被引：6

作者：

Herdrich, M. O. ^{[1
,2
,3
]}

Weber, G. ^{[1
,3
]}

Gumberidze, A. ^{[3
]}

Wu, Z. W. ^{[1
,4
]}

Stohlker, Th. ^{[1
,2
,3
]}

机构：

[1] Helmholtz Inst Jena, Frobelstieg 3, D-07743 Jena, Germany

[2] Friedrich Schiller Univ Jena, Inst Opt & Quantenelekt, Max Wien Pl 1, D-07743 Jena, Germany

[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, Planckstr 1, D-64291 Darmstadt, Germany

[4] Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Gansu, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2017年 / 408卷

关键词：

Highly charged heavy ions; GSI/FAIR; Radiative Recombination; Radiative Electron Capture; ESR; Characteristic X-ray lines; CROSS-SECTIONS; BARE IONS; POLARIZATION; PHYSICS; FIELDS;

D O I：

10.1016/j.nimb.2017.04.022

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In experiments with highly charged, fast heavy ions the Radiative Recombination (RR) and Radiative Electron Capture (REC) processes have significant cross sections in an energy range of up to a few GeV/u. They are some of the most important charge changing processes in collisions of heavy ions with atoms and electrons, leading to the emission of a photon along with the formation of the ground and excited atomic states. Hence, for the understanding and planning of experiments, in particular for Xray spectroscopy studies, at accelerator ring facilities, such as FAIR, it is crucial to have a good knowledge of these cross sections and the associated radiation characteristics. In the frame of this work a fast calculator, named RECAL, for the RR and REC process is presented and its capabilities are demonstrated with the analysis of a recently conducted experiment at the Experimental Storage Ring (ESR) at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt, Germany. A method is presented to determine unknown X-ray emission cross sections via normalization of the recorded spectra to REC cross sections calculated by RECAL. (C) 2017 Published by Elsevier B.V.

引用

页码：294 / 300

页数：7

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