Shape resonances of Be- and Mg- investigated with the method of analytic continuation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10385982" target="_blank" >RIV/00216208:11320/18:10385982 - isvavai.cz</a>

Alternative codes found

RIV/61388955:_____/18:00498446

Result on the web

<a href="https://doi.org/10.1103/PhysRevA.97.052704" target="_blank" >https://doi.org/10.1103/PhysRevA.97.052704</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.97.052704" target="_blank" >10.1103/PhysRevA.97.052704</a>

Result language

angličtina

Original language name

Shape resonances of Be- and Mg- investigated with the method of analytic continuation

Original language description

The regularized method of analytic continuation is used to study the low-energy negative-ion states of beryllium (configuration 2s(2)epsilon p P-2) and magnesium (configuration 3s(2)epsilon p P-2) atoms. The method applies an additional perturbation potential and requires only routine bound-state multi-electron quantum calculations. Such computations are accessible by most of the free or commercial quantum chemistry software available for atoms and molecules. The perturbation potential is implemented as a spherical Gaussian function with a fixed width. Stability of the analytic continuation technique with respect to the width and with respect to the input range of electron affinities is studied in detail. The computed resonance parameters E-r = 0.282 eV, Gamma = 0.316 eV for the 2p state of Be- and E-r = 0.188 eV, Gamma = 0.167 for the 3p state of Mg- agree well with the best results obtained by much more elaborate and computationally demanding present-day methods.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10300 - Physical sciences

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review A

ISSN

2469-9926

e-ISSN

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Volume of the periodical

97

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

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UT code for WoS article

000432019800010

EID of the result in the Scopus database

2-s2.0-85046933692