https://doi.org/10.1140/epja/i2019-12789-y
Regular Article - Theoretical Physics
Characterization of vorticity in pygmy resonances and soft-dipole modes with two-nucleon transfer reactions
1
The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100, Copenhagen, Denmark
2
Dipartimento di Fisica, Università degli Studi Milano, Via Celoria 16, I-20133, Milano, Italy
3
Departamento de Fìsica Aplicada III, Escuela Superior de Ingenieros, Universidad de Sevilla, Camino de los Descubrimientos, Sevilla, Spain
4
National Superconducting Cyclotron Laboratory, Michigan State University, 48824, East Lansing, MI, USA
5
INFN Sezione di Milano, Via Celoria 16, I-20133, Milano, Italy
* e-mail: potel@nscl.msu.edu
Received:
8
May
2019
Accepted:
2
June
2019
Published online:
3
December
2019
The properties of the two-quasiparticle-like soft E1-modes and Pygmy Dipole Resonances (PDR) have been and are systematically studied with the help of inelastic and electromagnetic experiments which essentially probe the particle-hole components of these vibrations. It is shown that further insight in their characterisation can be achieved with the help of two-nucleon transfer reactions, in particular concerning the particle-particle components of the modes, in terms of absolute differential cross sections which take properly into account successive and simultaneous transfer mechanisms corrected for non-orthogonality, able to reproduce the experimental findings at the 10% level. The process 9Li(t, p)11Li(1-) is discussed, and absolute cross sections predicted.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
