Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/179201
Title: | Electromagnetic properties of 21O for benchmarking nuclear Hamiltonians |
Author: | Heil, S. Petri, M. Vobig, K. Bazin, D. Belarge, J. Bender, P. Brown, B. A. Elder, R. Elman, B. Gade, A. Haylett, T. Holt, J. D. Hüther, T. Hufnagel, A. Iwasaki, H. Kobayashi, N. Loelius, C. Longfellowc, B. Lunderberg, E. Mathy, M. Menéndez Sánchez, Javier Paschalis, S. Roth, R. Schwenk, A. Simonis, J. Syndikus, I. Weisshaar, D. Whitmore, K. |
Keywords: | Química quàntica Simulació per ordinador Quantum chemistry Computer simulation |
Issue Date: | 10-Oct-2020 |
Publisher: | Elsevier B.V. |
Abstract: | The structure of exotic nuclei provides valuable tests for state-of-the-art nuclear theory. In particular electromagnetic transition rates are more sensitive to aspects of nuclear forces and many-body physics than excitation energies alone. We report the first lifetime measurement of excited states in 21O, finding ps. This result together with the deduced level scheme and branching ratio of several γ-ray decays are compared to both phenomenological shell-model and ab initio calculations based on two- and three-nucleon forces derived from chiral effective field theory. We find that the electric quadrupole reduced transition probability of e2 fm4, derived from the lifetime of the state, is smaller than the phenomenological result where standard effective charges are employed, suggesting the need for modifications of the latter in neutron-rich oxygen isotopes. We compare this result to both large-space and valence-space ab initio calculations, and by using multiple input interactions we explore the sensitivity of this observable to underlying details of nuclear forces. |
Note: | Reproducció del document publicat a: https://doi.org/10.1016/j.physletb.2020.135678 |
It is part of: | Physics Letters B, 2020, vol. 809, num. 135678 |
URI: | http://hdl.handle.net/2445/179201 |
Related resource: | https://doi.org/10.1016/j.physletb.2020.135678 |
ISSN: | 0370-2693 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
705467.pdf | 572.24 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License