Measurement of the Kr XVIII 3d 2D5/2 lifetime in a Unitary Penning Trap

Published

April 24, 2014

Author(s)

Nicholas D. Guise, Joseph N. Tan, Samuel M. Brewer, Charlotte F. Fischer, P. Jonsson

Abstract

The lifetime of the 3d 2D5/2 in the fine-structure doublet of the Kr XVIII ground configuration is measured using a compact Penning trap with < 2.2 cm3 of trapping volume. Kr17+ ions produced in an electron beam ion trap (EBIT) are extracted and captured in this unitary Penning trap, isolating them with an energy distribution that is about a factor of 102 lower than in the EBIT ion source. The 637 nm photons emitted by the captured Kr XVIII ions are observed when the 3d 2D5/2 level decays via magnetic-dipole (M1) transition to the 3d 2D3/2 ground state. We measured the lifetime of the 3d 2D5/2 level to be 24.48 (28)stat (14)sys. At the one-percent level, this new technique is compared with a previous intra-EBIT experiment and various theoretical methods. Prospect for other experiments and higher accuracy is discussed.

Citation

Physical Review Letters

Volume

89

Pub Type

Journals

Download Paper

DOI Link

Keywords

Ion trapping, Atomic spectroscopy, Atomic Physics

Citation

Guise, N. , Tan, J. , Brewer, S. , Fischer, C. and Jonsson, P. (2014), Measurement of the Kr XVIII 3d 2D5/2 lifetime in a Unitary Penning Trap, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevA.89.040502 (Accessed April 28, 2024)