| Authors | Mohammad Mehdi Firoozabadi |
|---|
| Journal | Nuclear Physics A |
|---|
| Page number | 1-7 |
|---|
| Serial number | 1065 |
|---|
| Volume number | 1 |
|---|
| Paper Type | Full Paper |
|---|
| Published At | 2026 |
|---|
| Journal Grade | ISI |
|---|
| Journal Type | Typographic |
|---|
| Journal Country | Iran, Islamic Republic Of |
|---|
| Journal Index | JCR،Scopus |
|---|
| Keywords | Electron, capture decay; Half, life change; 40K; Chemical environment effect; Pressure effect; Radioactive dating |
|---|
Abstract
This study employs first-principles density functional theory (DFT) calculations to investigate the influence of chemical environment and pressure on the electron capture (EC) decay rate of the
nucleus in different chemical environments: metallic potassium (K), potassium chloride (KCl), and muscovite mica (
). Our results indicate a 0.17 % reduction in the EC decay rate, corresponding to a 0.17 % increase in the
half-life within the muscovite structure compared to metallic potassium. Additionally, pressure effects on the
half-life are investigated for metallic potassium and muscovite structures. Results show a 0.011 % increase in
EC decay rate at 25 GPa relative to zero pressure in metallic potassium.
