Systematic Trends of 0$^+_2$, 1$^-_1$, 3$^-_1$ and 2$^+_1$ Excited States in Even-Even Nuclei

TL;DR

This paper reviews and analyzes the systematic trends of specific excited states in even-even nuclei, confirming the dominance of 2$^+_1$ states and exploring properties and correlations of other excited states across the nuclear chart.

Contribution

It provides a comprehensive review of the systematic trends of excited states in even-even nuclei using ENSDF data, highlighting new correlations and properties.

Findings

Confirmation of the prevalence of 2$^+_1$ states in even-even nuclei.

Reexamination of properties of 0$^+_2$, 1$^-_1$, and 3$^-_1$ states.

Discussion of systematic trends and correlations with nuclear phenomena.

Abstract

The spin and parity ($J^{\pi}$) assignments in even-even nuclei were reviewed across the nuclear chart using the Evaluated Nuclear Structure Data File (ENSDF). The prevalence of 2$^+_1$ first or lowest excited states is confirmed. The properties of 0$^+_2$, 1$^-_1$, and 3$^-_1$ lowest excited states were reexamined using the ENSDF data evaluation procedures. The $J^{\pi}$ systematic trends and correlations between level quantum numbers and nuclear physics phenomena are discussed.