Black-body radiation shifts and theoretical contributions to atomic clock research.
IEEE Trans Ultrason Ferroelectr Freq Control
; 57(1): 94-105, 2010 Jan.
Article
em En
| MEDLINE
| ID: mdl-20040432
ABSTRACT
A review of theoretical calculations of black-body radiation (BBR) shifts in various systems of interest to atomic clock research is presented. Calculations for monovalent systems, such as Ca(+), Sr(+), and Rb are carried out using a relativistic all-order single-double method, where all single and double excitations of the Dirac-Fock wave function are included to all orders of perturbation theory. A recently developed method for accurate calculations of BBR shifts in divalent atoms such as Sr is discussed. This approach combines the relativistic allorder method and the configuration interaction method. The evaluation of uncertainties in theoretical values of BBR shifts is discussed in detail.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Radioisótopos
/
Fatores de Tempo
/
Modelos Químicos
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article