Abstract
For 12C + 184W, 18O + 184W, and 20Ne + 208Pb systems, we investigate the suppression of the ratios P E = σ el/σ RU by using the Coulomb quadrupole excitation (CQE) potentials. In order to explain the effect of the CQE potentials, we first use a well-known Love’s CQE potential, and reproduce the experimental P E data well by using this potential. We also introduce a simple CQE potential written as W CQE(r) = −W P /r n, which is much simpler than the conventional Love’s potential, to investigate the suppression of the P E ratios. Using this potential, we perform a χ2 analysis to find the adjustable parameter n, then, we find that the best fit parameters n ≈ 5 is close to the lowest order term, 1/r 5. Consequently, we find that using the simple CQE potential explains the experimental P E data and that the ratio P E depends on the n values sensitively.
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Cheoun, MK., Choi, K.S., Kim, K.S. et al. Effects of Coulomb quadrupole excitation in heavy-ion reactions. Journal of the Korean Physical Society 69, 880–883 (2016). https://doi.org/10.3938/jkps.69.880
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DOI: https://doi.org/10.3938/jkps.69.880