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http://dx.doi.org/10.3952/lithjphys.47416
Open access article / Atviros prieigos straipsnis
Lith. J. Phys. 47, 387–395 (2007)
COMPARISON OF TWO THEORETICAL
METHODS FOR STUDYING 2–2 TRANSITIONS IN BERYLLIUM ISOELECTRONIC
SEQUENCE
P. Bogdanovicha and H.-S. Choub
aInstitute of Theoretical Physics and Astronomy of
Vilnius University, A. Goštauto 12, LT-01108 Vilnius, Lithuania
E-mail: pavlas@itpa.lt
bInstitute of Optoelectronic Sciences, National
Taiwan Ocean University, Keelung, Taiwan 202, Republic of China
Received 31 October 2007; accepted
21 November 2007
Theoretical investigation of
characteristics of allowed dipole 2–2 transitions in beryllium
isoelectronic sequence is performed applying two different
theoretical methods: the relativistic many-body perturbation
theory and the configuration interaction method. The data on
oscillator strengths are obtained for ions with nucleus charge
ranging from 4 till 29. The calculated data reveal a very good
coincidence of these two methods almost for all investigated ions.
The comparison of results of the present work with experimental
and theoretical data of other authors for N III and Fe XXIII shows
that the level of accuracy of the obtained oscillator strength
values is high enough for interpretation of the experimental data
as well as for modelling of the different types of plasma.
Keywords: configuration interaction,
perturbation theory, beryllium isoelectronic sequence, 2–2
transitions
PACS: 31.15.Ar, 31.15.Mg, 31.25.Eb, 31.25.Jf, 32.70.Cs
DVIEJŲ TEORINIŲ METODŲ LYGINIMAS
NAGRINĖJANT 2–2 ŠUOLIUS BERILIO IZOELEKTRONINĖJE SEKOJE
P. Bogdanovičiusa, H.-S. Choub
aVilniaus universiteto Teorinės fizikos ir
astronomijos institutas, Vilnius, Lietuva
bNacionalinio Taivanio vandenyno universiteto
Optoelektronikos mokslų institutas, Kylangas, Kinijos Respublika
Atliktas teorinis leistinų elektrinių dipolinių
šuolių 2–2 tyrimas berilio izoelektroninei sekai. Branduolių
krūviams nuo 4 iki 29 tyrimas atliktas dviem artiniais –
konfigūracijų superpozicija ir trikdžių teorija. Gautas geras
šuolių tikimybių ir osciliatorių stiprių, gautų skirtingais
teoriniais metodais, tarpusavio sutapimas esant įvairiems
jonizacijos laipsniams. Literatūros duomenų N III ir Fe XXIII
jonams palyginimas su šio darbo rezultatais patvirtina pakankamai
aukštą pastarųjų patikimumą.
Taip pat nurodytas esminis gautų osciliatorių stiprių nesutapimas
su NIST duomenų bazės duomenimis kai kurioms B II, F VI ir Ne VII
jonų linijoms.
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