Lifetimes and Oscillator Strengths for Ultraviolet Transitions in Singly-Ionized Tin

TL;DR

This paper reports experimental lifetime measurements and theoretical calculations of oscillator strengths for ultraviolet transitions in singly-ionized tin (Sn II), providing valuable data for astrophysical and atomic physics applications.

Contribution

It presents new beam foil lifetime measurements and MCDHF calculations for Sn II, offering improved data on oscillator strengths and transition probabilities.

Findings

Measured lifetimes for Sn II levels using beam foil techniques.

Calculated oscillator strengths with MCDHF method.

Compared experimental and theoretical results with existing data.

Abstract

Lifetime measurements using beam foil techniques for the $5s5p^{2}$ $^{2}D_{3/2,5/2}$ levels in Sn II are presented. The resulting oscillator strengths for transitions at 1699.4, 1831.8 and 1811.2 \AA{} are reported. We also studied these levels with multi-configuration Dirac Hartree-Fock (MCDHF) calculations using a development version of the GRASP2K package. Our experimental and theoretical results are compared with other available studies.