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Title: Single and pair neutron transfers at sub-barrier energies

Abstract

Multinucleon transfer cross sections in the {sup 96}Zr+{sup 40}Ca system have been measured, in inverse kinematics, at bombarding energies ranging from the Coulomb barrier to {approx}25% below. Targetlike recoils have been identified in A, Z and velocity with the large solid angle magnetic spectrometer PRISMA. The experimental data for one- and two-neutron transfer channels have been compared with semiclassical microscopic calculations. For the two-neutron transfer channels the relevance of the transitions to the ground state and to the 0{sup +} excited states of {sup 42}Ca are discussed by employing, for the reaction mechanism, the successive approximation. It is found that the transition to the 0{sup +} state at {approx}6 MeV, whose wave function is dominated by the two neutrons in the 2p{sub 3/2} shell, is much larger than the ground state one. The comparison with the inclusive data reveals that transitions to states with high multipolarity and non-natural parity are important. This suggests that more complex two-particle correlations have to be incorporated in the treatment of the transfer process.

Authors:
; ; ; ;  [1];  [1];  [2];  [3];  [4]; ; ; ; ; ;  [5];  [6];  [7]; ;  [8];  [9]
  1. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy)
  2. (Croatia)
  3. Dipartimento di Fisica Teorica, Universita di Torino, and Istituto Nazionale di Fisica Nucleare, I-10125 Torino (Italy)
  4. Dipartimento di Fisica, Universita degli Studi di Milano and Istituto Nazionale di Fisica Nucleare, I-20133 Milano (Italy)
  5. Dipartimento di Fisica, Universita di Padova, and Istituto Nazionale di Fisica Nucleare, I-35131 Padova (Italy)
  6. IFIC, CSIC-Universidad de Valencia, E-46071 Valencia (Spain)
  7. Institut Pluridisciplinaire Hubert Curien, CNRS-IN2P3, Universite de Strasbourg, F-67037 Strasbourg (France)
  8. Ruder Boskovic Institute, HR-10 001 Zagreb (Croatia)
  9. Horia Hulubei National Institute of Physics and Nuclear Engineering, R-077125, Bucharest-Magurele (Romania)
Publication Date:
OSTI Identifier:
21596754
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034603; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CALCIUM 40; CALCIUM 42; COMPARATIVE EVALUATIONS; CORRELATIONS; COULOMB FIELD; CROSS SECTIONS; EXCITED STATES; GROUND STATES; MAGNETIC SPECTROMETERS; MEV RANGE 01-10; MULTIPOLARITY; NEUTRON TRANSFER; NEUTRONS; PARITY; REACTION KINETICS; SEMICLASSICAL APPROXIMATION; WAVE FUNCTIONS; ZIRCONIUM 96; ALKALINE EARTH ISOTOPES; APPROXIMATIONS; BARYONS; CALCIUM ISOTOPES; CALCULATION METHODS; ELECTRIC FIELDS; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; EVALUATION; EVEN-EVEN NUCLEI; FERMIONS; FUNCTIONS; HADRONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; KINETICS; LIGHT NUCLEI; MEASURING INSTRUMENTS; MEV RANGE; NUCLEI; NUCLEONS; PARTICLE PROPERTIES; SPECTROMETERS; STABLE ISOTOPES; ZIRCONIUM ISOTOPES

Citation Formats

Corradi, L., Fioretto, E., Michelagnoli, C., Stefanini, A. M., Valiente-Dobon, J. J., Szilner, S., Ruder Boskovic Institute, HR-10 001 Zagreb, Pollarolo, G., Colo, G., Mason, P., Farnea, E., Montagnoli, G., Montanari, D., Scarlassara, F., Ur, C. A., Gadea, A., Haas, F., Jelavic-Malenica, D., Soic, N., and Marginean, N. Single and pair neutron transfers at sub-barrier energies. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034603.
Corradi, L., Fioretto, E., Michelagnoli, C., Stefanini, A. M., Valiente-Dobon, J. J., Szilner, S., Ruder Boskovic Institute, HR-10 001 Zagreb, Pollarolo, G., Colo, G., Mason, P., Farnea, E., Montagnoli, G., Montanari, D., Scarlassara, F., Ur, C. A., Gadea, A., Haas, F., Jelavic-Malenica, D., Soic, N., & Marginean, N. Single and pair neutron transfers at sub-barrier energies. United States. doi:10.1103/PHYSREVC.84.034603.
Corradi, L., Fioretto, E., Michelagnoli, C., Stefanini, A. M., Valiente-Dobon, J. J., Szilner, S., Ruder Boskovic Institute, HR-10 001 Zagreb, Pollarolo, G., Colo, G., Mason, P., Farnea, E., Montagnoli, G., Montanari, D., Scarlassara, F., Ur, C. A., Gadea, A., Haas, F., Jelavic-Malenica, D., Soic, N., and Marginean, N. Thu . "Single and pair neutron transfers at sub-barrier energies". United States. doi:10.1103/PHYSREVC.84.034603.
@article{osti_21596754,
title = {Single and pair neutron transfers at sub-barrier energies},
author = {Corradi, L. and Fioretto, E. and Michelagnoli, C. and Stefanini, A. M. and Valiente-Dobon, J. J. and Szilner, S. and Ruder Boskovic Institute, HR-10 001 Zagreb and Pollarolo, G. and Colo, G. and Mason, P. and Farnea, E. and Montagnoli, G. and Montanari, D. and Scarlassara, F. and Ur, C. A. and Gadea, A. and Haas, F. and Jelavic-Malenica, D. and Soic, N. and Marginean, N.},
abstractNote = {Multinucleon transfer cross sections in the {sup 96}Zr+{sup 40}Ca system have been measured, in inverse kinematics, at bombarding energies ranging from the Coulomb barrier to {approx}25% below. Targetlike recoils have been identified in A, Z and velocity with the large solid angle magnetic spectrometer PRISMA. The experimental data for one- and two-neutron transfer channels have been compared with semiclassical microscopic calculations. For the two-neutron transfer channels the relevance of the transitions to the ground state and to the 0{sup +} excited states of {sup 42}Ca are discussed by employing, for the reaction mechanism, the successive approximation. It is found that the transition to the 0{sup +} state at {approx}6 MeV, whose wave function is dominated by the two neutrons in the 2p{sub 3/2} shell, is much larger than the ground state one. The comparison with the inclusive data reveals that transitions to states with high multipolarity and non-natural parity are important. This suggests that more complex two-particle correlations have to be incorporated in the treatment of the transfer process.},
doi = {10.1103/PHYSREVC.84.034603},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}