Electron correlations in the antiproton energy-loss distribution in He

被引：13

作者：

Borbely, S. ^{[1
]}

Tong, X-M ^{[2
]}

Nagele, S. ^{[3
]}

Feist, J. ^{[4
,5
]}

Brezinova, I ^{[3
]}

Lackner, F. ^{[3
]}

Nagy, L. ^{[1
]}

Tokesi, K. ^{[6
,7
]}

Burgdoerfer, J. ^{[3
]}

机构：

[1] Babes Bolyai Univ, Fac Phys, Cluj Napoca 400084, Romania

[2] Univ Tsukuba, Ctr Computat Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058577, Japan

[3] Vienna Univ Technol, Inst Theoret Phys, A-1040 Vienna, Austria

[4] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain

[5] Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC, E-28049 Madrid, Spain

[6] Hungarian Acad Sci ATOMKI, Inst Nucl Res, POB 51, H-4001 Debrecen, Hungary

[7] ELI HU Nonprofit Ltd, ELI ALPS, Dugonics Ter 13, H-6720 Szeged, Hungary

来源：

PHYSICAL REVIEW A | 2018年 / 98卷 / 01期

基金：

奥地利科学基金会; 欧洲研究理事会; 日本学术振兴会;

关键词：

MOVING ELECTRIFIED PARTICLES; DENSITY-FUNCTIONAL THEORY; STOPPING-POWER; DOUBLE-IONIZATION; CROSS-SECTIONS; EXCITATION-IONIZATION; FANO RESONANCE; HELIUM ATOM; PROTONS; TIME;

D O I：

10.1103/PhysRevA.98.012707

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present ab initio calculations of the electronic differential energy-transfer cross sections for antiprotons with energies between 3 keV and 1 MeV interacting with helium. By comparison with simulations employing the mean-field description based on the single-active electron approximation we are able to identify electron correlation effects in the stopping and straggling cross sections. Most remarkably, we find that straggling exceeds the celebrated Bohr straggling limit when correlated shake-up processes are included.

引用

页数：12

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