Two-Neutron Transfer Reaction Mechanisms in ¹²C(⁶He, ⁴He) ¹⁴C using a Realistic Three-Body ⁶He Model

Authors

D. Smalley, Colorado School of Mines
F. Sarazin, Colorado School of Mines
F. M. Nunes, Michigan State University
B. A. Brown, Michigan State University
P. Adsley, University of York, United Kingdom
H. Al-Falou, TRIUMF, Canada
C. Andreoiu, Simon Fraser University, Canada
B. Baartman, Simon Fraser University, Canada
G. C. Ball, TRIUMF, Canada
J. C. Blackmon, Louisiana State University
H. C. Boston, University of Liverpool, United Kingdom
W. N. Catford, University of Surrey, United Kingdom
S. Chagnon-Lessard, University of Guelph, Canada
A. Chester, Simon Fraser University, Canada
R. M. Churchman, TRIUMF, Canada
D. S. Cross, Simon Fraser University, Canada
C. Aa. Diget, University of York, United Kingdom
D. Di Valentino, Carleton University, Canada
S. P. Fox, University of York, United Kingdom
B. R. Fulton, University of York, United Kingdom
A. Garnsworthy, TRIUMF, Canada
G. Hackman, TRIUMF, Canada
U. Hager, Colorado School of Mines
R. Kshetri, Simon Fraser University, Canada
J. N. Orce, TRIUMF, Canada
N. A. Orr, IN2P3-CNRS et Université de Caen, France
E. Paul, University of Liverpool, United Kingdom
M. Pearson, TRIUMF, Canada
E. T. Rand, University of Guelph, Canada
J. Rees, University of Liverpool, United Kingdom
S. Sjue, TRIUMF, Canada
C. E. Svensson, University of Guelph, Canada
E. Tardiff, TRIUMF, Canada
A. Diaz Varela, University of Guelph, Canada
S. J. Williams, Michigan State University
Steven W. Yates, University of KentuckyFollow

Abstract

The reaction mechanisms of the two-neutron transfer reaction ¹²C(⁶He,⁴He) have been studied at E_lab=30 MeV at the TRIUMF ISAC-II facility using the Silicon Highly-segmented Array for Reactions and Coulex (SHARC) charged-particle detector array. Optical potential parameters have been extracted from the analysis of the elastic scattering angular distribution. The new potential has been applied to the study of the transfer angular distribution to the 2+₂ 8.32 MeV state in ¹⁴C, using a realistic three-body ⁶He model and advanced shell-model calculations for the carbon structure, allowing to calculate the relative contributions of the simultaneous and sequential two-neutron transfer. The reaction model provides a good description of the 30-MeV data set and shows that the simultaneous process is the dominant transfer mechanism. Sensitivity tests of optical potential parameters show that the final results can be considerably affected by the choice of optical potentials. A reanalysis of data measured previously at E_lab=18 MeV, however, is not as well described by the same reaction model, suggesting that one needs to include higher-order effects in the reaction mechanism.

Document Type

Article

Publication Date

2-6-2014

Notes/Citation Information

Published in Physical Review C: Nuclear Physics, v. 89, article 024602, p. 1-9.

©2014 American Physical Society

The copyright holder has granted permission for posting the article here.

Digital Object Identifier (DOI)

http://dx.doi.org/10.1103/PhysRevC.89.024602

Repository Citation

Smalley, D.; Sarazin, F.; Nunes, F. M.; Brown, B. A.; Adsley, P.; Al-Falou, H.; Andreoiu, C.; Baartman, B.; Ball, G. C.; Blackmon, J. C.; Boston, H. C.; Catford, W. N.; Chagnon-Lessard, S.; Chester, A.; Churchman, R. M.; Cross, D. S.; Diget, C. Aa.; Di Valentino, D.; Fox, S. P.; Fulton, B. R.; Garnsworthy, A.; Hackman, G.; Hager, U.; Kshetri, R.; Orce, J. N.; Orr, N. A.; Paul, E.; Pearson, M.; Rand, E. T.; Rees, J.; Sjue, S.; Svensson, C. E.; Tardiff, E.; Varela, A. Diaz; Williams, S. J.; and Yates, Steven W., "Two-Neutron Transfer Reaction Mechanisms in ¹²C(⁶He, ⁴He) ¹⁴C using a Realistic Three-Body ⁶He Model" (2014). Physics and Astronomy Faculty Publications. 135.
https://uknowledge.uky.edu/physastron_facpub/135