Low-, medium-, and high-spin states in the N=Z+1 nucleus ⁶³Ga

Summary, in English

The fusion-evaporation reaction ²⁸Si+⁴⁰Ca at 122 MeV beam energy was used to populate excited states in the N=Z+1 nucleus ⁶³Ga. With the combination of the Gammasphere spectrometer and the Microball CsI(Tl) charged-particle detector array, the level scheme of ⁶³Ga was extended by more than a factor of two in terms of number of γ-ray transitions and excited states, excitation energy (E_x>30 MeV), and angular momentum (I>30 ℏ). Nine regular sequences of states were newly established in the high-spin part of the level scheme. The majority of these rotational band structures could be connected to the previously known part of the level scheme by high-energy γ-ray transitions in the energy range E_γ=4–6 MeV. Low-spin states were assessed by shell-model calculations. The high-spin rotational bands were interpreted and classified by means of cranked Nilsson-Strutinsky calculations.

• Author: D. Rudolph; I. Ragnarsson; R. M. Clark; C. Andreoiu; M. P. Carpenter; J. Ekman; C. Fahlander; F. G. Kondev; T. Lauritsen; D. G. Sarantites; D. Seweryniak; C. E. Svensson
• Department/s: Nuclear physics; Mathematical Physics; Department of Physics
• Publishing year: 2021-03-05
• Language: English
• Publication/Series: Physical Review C
• Volume: 103
• Issue: 3
• Full text: - 1 MB; Download statistics
• Links: http://dx.doi.org/10.1103/PhysRevC.103.034306
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Keywords: nuclear structure and decays; N=Z nuclei; gamma-ray spectroscopy
• Status: Published
• Project: Nuclear Structure at the Limits: Isotope-selective Spectroscopy
• ISBN/ISSN/Other: ISSN: 2469-9985