Gamma-ray Spectroscopy of Core-excited States in 51Mn

Summary, in English

The level scheme of Mn-51 has been investigated using the Si-28(S-32 2alpha1p)Mn-51 fusion-evaporation reaction at 125 MeV beam energy. The gamma rays were detected in the Ge-detector array Gammasphere, which was coupled to the 4pi-charged-particle detector Microball and the Neutron Shell for the coincident detection of evaporated particles. Over 100 new gamma-ray transitions connecting some 50 excited states have been identified. Most of the states are built on particle-hole excitations across the shell gaps at particle number N=Z=28. The rich experimental data allows for a 'comprehensive comparison of core-excited states with results from large-scale shell-model calculations, which are known to provide excellent predictions for the lower-lying yrast and near-yrast levels in 1f(7/2) nuclei.

• Author: Jörgen Ekman; Dirk Rudolph; Corina Andreoiu; Claes Fahlander; Milena Mineva; MA Bentley; SJ Williams; R Charity; E Ideguchi; W Reviol; DG Sarantites; V Tomov; RM Clark; M Cromaz; P Fallon; AO Macchiavelli; MP Carpenter; D Seweryniak
• Department/s: Nuclear physics
• Publishing year: 2004
• Language: English
• Publication/Series: Physical Review C (Nuclear Physics)
• Volume: 70
• Issue: 1
• Links: http://dx.doi.org/10.1103/PhysRevC.70.014306
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• Research group: Nuclear Structure
• ISBN/ISSN/Other: ISSN: 0556-2813