Relativistic many-body calculations of multipole (E1, M1, E2, M2, E3, and M3) transition wavelengths and rates between 3l{sup -1}4l' excited and ground states in nickel-like ions

Journal Article · Sun Jan 15 00:00:00 EST 2006 · Atomic Data and Nuclear Data Tables

DOI:https://doi.org/10.1016/j.adt.2005.09.001· OSTI ID:20761890

Safronova, U I ^[1]; Safronova, A S ^[1]; Hamasha, S M ^[2]; Beiersdorfer, P ^[3]

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1. Physics Department, University of Nevada, Reno, NV 89557 (United States)
2. Physics Department, Hashemite University, Zerga (Jordan)
3. Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)

Wavelengths, transition rates, and line strengths are calculated for the 76 possible multipole (E1, M1, E2, M2, E3, and M3) transitions between the excited 3s{sup 2}3p{sup 6}3d{sup 9}4l, 3s{sup 2}3p{sup 5}3d{sup 1}4l, and 3s3p{sup 6}3d{sup 1}4l and the ground 3s{sup 2}3p{sup 6}3d{sup 1} states in Ni-like ions with the nuclear charges ranging from Z = 30 to 100. The relativistic many-body perturbation theory (RMBPT), including the Breit interaction, is used to evaluate energies and transition rates for multipole transitions in hole-particle systems. This method is based on relativistic many-body perturbation theory, agrees with MCDF calculations in lowest-order, includes all second-order correlation corrections, and includes corrections from negative energy states. The calculations start from a 1s{sup 2}2s{sup 2}2p{sup 6}3s{sup 2}3p{sup 6}3d{sup 1} Dirac-Fock potential. First-order perturbation theory is used to obtain intermediate-coupling coefficients, and the second-order RMBPT is used to determine the matrix elements. The contributions from negative-energy states are included in the second-order E1, M1, E2, M2, E3, and M3 matrix elements. The resulting transition energies and transition rates are compared with experimental values and with results from other recent calculations. As a result, we present wavelengths and transition rates data for the selected transitions that include the 76 possible multipole (E1, M1, E2, M2, E3, and M3) transitions between the excited 3s{sup 2}3p{sup 6}3d{sup 9}4l, 3s{sup 2}3p{sup 5}3d{sup 1}4l, and 3s3p{sup 6}3d{sup 1}4l states and the ground 3s{sup 2}3p{sup 6}3d{sup 1} state in Ni-like ions. Trends of the line strengths for the 76 multipole transitions and oscillator strengths for the 13 E1 transitions as function of Z are illustrated graphically. The Z-dependence of the energy splitting for all triplet terms of the 3s{sup 2}3p{sup 6}3d{sup 9}4l, 3s{sup 2}3p{sup 5}3d{sup 1}4l, and 3s3p{sup 6}3d{sup 1}4l configurations are shown in the range of Z = 30-100.

• OSTI ID: 20761890
• Journal Information: Atomic Data and Nuclear Data Tables, Vol. 92, Issue 1; Other Information: DOI: 10.1016/j.adt.2005.09.001; PII: S0092-640X(05)00053-7; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0092-640X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRECTIONS
E1-TRANSITIONS
E2-TRANSITIONS
E3-TRANSITIONS
EXCITED STATES
GROUND STATES
INTERMEDIATE COUPLING
M1-TRANSITIONS
M2-TRANSITIONS
M3-TRANSITIONS
MANY-BODY PROBLEM
MATRIX ELEMENTS
NEGATIVE ENERGY STATES
NICKEL IONS
NUCLEAR DATA COLLECTIONS
OSCILLATOR STRENGTHS
PERTURBATION THEORY
RELATIVISTIC RANGE