Low-energy enhancement of M1 strength


Low-energy enhancement of M1 strength

Schwengner, R.; Frauendorf, S.; Larsen, A. C.

Magnetic dipole strength functions have been deduced from averages of a large number of M 1 transition strengths calculated within the shell model for the nuclides 90 Zr, 94Mo, 95 Mo, and 96 Mo. An enhancement of M1 strength toward low transition energy has been found for all nuclides considered. Large M1 strengths appear for transitions between close-lying states with configurations including proton as well as neutron high-j orbits that re-couple their spins and add up their magnetic moments coherently. The M 1 strength function deduced from the calculated M 1 transition strengths is compatible with the low-energy enhancement found in (3He,3He') and (d,p) experiments. The present work presents an explanation of the experimental findings.

Keywords: Strength functions; magnetic dipole strength; shell model

  • Open Access Logo Journal of Physics: Conference Series 580(2015), 012020
    DOI: 10.1088/1742-6596/580/1/012020
  • Invited lecture (Conferences)
    11th International Spring Seminar on Nuclear Physics: Shell Model and Nuclear Structure - achievements of the past two decades, 12.-16.05.2014, Ischia, Italia

Permalink: https://www.hzdr.de/publications/Publ-21763
Publ.-Id: 21763