Power-Law Intensity Distribution of γ -Decay Cascades: Nuclear Structure as a Scale-Free Random Network

Keisuke Fujii, Julian C. Berengut

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

By modeling the transition paths of the nuclear γ-decay cascade using a scale-free random network, we uncover a universal power-law distribution of γ-ray intensity ρI(I)I-2, with I the γ-ray intensity of each transition. This property is consistently observed for all datasets with a sufficient number of γ-ray intensity entries in the National Nuclear Data Center database, regardless of the reaction type or nuclei involved. In addition, we perform numerical simulations that support the model's predictions of level population density.

Original languageEnglish
Article number102502
JournalPhysical Review Letters
Volume126
Issue number10
DOIs
StatePublished - Mar 12 2021
Externally publishedYes

Funding

This work was partly supported by JSPS KAKENHI Grant No. 19K14680, a grant from the Joint Research by the National Institutes of Natural Sciences (NINS) (NINS program no. 01111905), and partly by the Max-Planck Society for the Advancement of Science. J. C. B is supported by the Alexander von Humboldt Foundation. We thank José Crespo López-Urrutia, Wenjia Huang, and Hans Arwed Weidenmüller, for their useful discussions.

FundersFunder number
Japan Society for the Promotion of Science19K14680
Max-Planck-Gesellschaft
National Institutes of Natural Sciences01111905
Alexander von Humboldt-Stiftung
National Institutes of Natural Sciences

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