Angular Dependence in Proton-Proton Correlation Functions in Central $^{40}Ca+^{40}Ca$ and $^{48}Ca+^{48}Ca$ Reactions
Abstract
The angular dependence of proton-proton correlation functions is studied in central and nuclear reactions at E=80 MeV/A. Measurements were performed with the HiRA detector complemented by the 4 Array at NSCL. A striking angular dependence in the laboratory frame is found within p-p correlation functions for both systems that greatly exceeds the measured and expected isospin dependent difference between the neutron-rich and neutron-deficient systems. Sources measured at backward angles reflect the participant zone of the reaction, while much larger sources observed at forward angles reflect the expanding, fragmenting and evaporating projectile remnants. The decrease of the size of the source with increasing momentum is observed at backward angles while a weaker trend in the opposite direction is observed at forward angles. The results are compared to the theoretical calculations using the BUU transport model.
Cite
@article{arxiv.1108.2552,
title = {Angular Dependence in Proton-Proton Correlation Functions in Central $^{40}Ca+^{40}Ca$ and $^{48}Ca+^{48}Ca$ Reactions},
author = {V. Henzl and M. A. Kilburn and Z. Chajecki and D. Henzlova and W. G. Lynch and D. Brown and A. Chbihi and D. Coupland and P. Danielewicz and R. deSouza and M. Famiano and C. Herlitzius and S. Hudan and Jenny Lee and S. Lukyanov and A. M. Rogers and A. Sanetullaev and L. Sobotka and Z. Y. Sun and M. B. Tsang and A. Vander Molen and G. Verde and M. Wallace and M. Youngs},
journal= {arXiv preprint arXiv:1108.2552},
year = {2013}
}
Comments
8 pages, 3 figures, submitted to PRC