Bibliographic Details
| Title: |
Exploring the possible two-proton radioactivity of $^{38,39}$Ti |
| Authors: |
Huang, B., Bai, F. P., Fang, D. Q., Wang, S. M. |
| Source: |
Physics Letters B, Volume 861, February 2025, 139257 |
| Publication Year: |
2025 |
| Collection: |
Nuclear Theory |
| Subject Terms: |
Nuclear Theory |
| More Details: |
Two-proton (2$p$) radioactivity represents a rare decay mode that has been experimentally observed only in a selected few nuclei. The exploration of 2$p$ emission is crucial for elucidating the structure, mass, and nucleon-nucleon interactions within exotic proton-rich nuclei. $^{39}$Ti has long been postulated as a potential candidate for 2$p$ emission; however, experimental investigations have yet to confirm its 2$p$ decay. To provide more accurate information for further studies, we utilize the Gamow shell model (GSM) and the Gamow coupled channel (GCC) method to analyze the prospective 2$p$ radioactivity of isotopes $^{38,39}$Ti. Our calculations suggest that $^{39}$Ti is indeed a viable candidate for 2$p$ emission. Notably, the estimated partial 2$p$ decay width for $^{39}$Ti, predicted from the three-body GCC method, suggests that its 2$p$ decay could rival its $\beta$ decay in likelihood, although this is highly dependent on the specific 2$p$ decay energy. Additionally, our analysis indicates a propensity for pairing between the valence protons in $^{39}$Ti. A similar investigative approach reveals that $^{38}$Ti exhibits a higher 2$p$ decay energy and a broader decay width than $^{39}$Ti, positioning it as a more promising candidate for 2$p$ decay.
Comment: 9 pages, 5 figures |
| Document Type: |
Working Paper |
| DOI: |
10.1016/j.physletb.2025.139257 |
| Access URL: |
http://arxiv.org/abs/2501.09542 |
| Accession Number: |
edsarx.2501.09542 |
| Database: |
arXiv |
