Eur. Phys. J. A (2004) 21: 87-91
https://doi.org/10.1140/epja/i2003-10187-x

Search for pairing-vibration states of even Ca isotopes in ⁴⁰Ca + ²⁰⁸Pb transfer reactions

¹ Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020, Legnaro, Italy
² Dipartimento di Fisica, Universitá di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131, Padova, Italy
³ Dipartimento di Fisica Teorica, Universitá di Torino and Istituto Nazionale di Fisica Nucleare, I-10125, Torino, Italy
⁴ Institut de Recherches Subatomiques, (IN2P3-CNRS-Université Louis Pasteur), F-67037, Strasbourg Cedex 2, France

^* e-mail: szilner@lnl.infn.it

Abstract

Multi-nucleon transfer reactions in ⁴⁰Ca + ²⁰⁸Pb have been studied at several bombarding energies close to the Coulomb barrier. Light reaction products have been identified in mass and charge with a time-of-flight spectrometer. The energy spectra of the inclusive two-neutron pick-up channel show a population in a narrow region of excitation energies which corresponds to the predicted energy of pairing-vibration states in ⁴²Ca.