Transition frequency shifts with fine-structure constant variation for Fe I. Isotope shift calculations in Fe I and Fe II

TL;DR

This paper calculates relativistic corrections to transition frequencies in Fe I and performs isotope shift calculations in Fe I and Fe II, including the first-ever isotope shift computation for Fe I, advancing atomic physics research.

Contribution

It introduces the first isotope shift calculations for Fe I and provides relativistic corrections to transition frequencies, enhancing understanding of atomic structure in iron.

Findings

Calculated relativistic corrections (q factors) for Fe I transitions.

Performed isotope shift calculations in Fe I and Fe II.

First isotope shift calculation for Fe I.

Abstract

In this paper we calculated the relativistic corrections to transition frequencies (q factors) of Fe I for the transitions from the even- and odd-parity states to the ground state. We also carried out isotope shift calculations in Fe I and Fe II. To the best of our knowledge, the isotope shift in Fe I was calculated for the first time.