Measurements of Reaction Cross Sections for <sup>12</sup>C, <sup>20</sup>Ne and <sup>27</sup>Al on heavy-mass targets
ORAL
Abstract
The reaction cross section (σR) for the atomic nucleus is closely related to the nuclear radius. The method to deduce nuclear radii from the measured σR is based on the Glauber model. The applicability of this method for light-mass nuclei (Z ≤20, A<50, such as 27Al) has been well established with many precise σR data and the Glauber-type calculation in the energy range of 30~400 MeV/nucleon[1]. On the other hand, the applicability to medium- or heavy-mass nuclei has not yet been examined based on the experimental data. The theoretical study predicts the non-negligible contribution of the electromagnetic dissociation (EMD) (e.g. 6% of σR for the Pb + C system)[2]. In this study, we performed σR measurements for the medium and heavy mass regions where there is a lack of data. The σR for 12C, 20Ne, and 27Al on Fe and Pb targets were measured at the beam energies from 70 to 350 MeV/nucleon at the HIMAC (Heavy Ion Medical Accelerator in Chiba) facility. The obtained data were compared to the Glauber-type calculation, allowing us to evaluate the contribution of the EMD effect.
In the presentation, we will report the detailed results of our experiments and discuss the applicability of the Glauber-type calculation to heavier-mass nuclei considering the EMD effect.
References
[1] M. Takechi et al., Phys. Rev. C 79 (2009) 061601.
[2] W. Horiuchi et al., Phys. Rev. C 93 (2016) 044611.
In the presentation, we will report the detailed results of our experiments and discuss the applicability of the Glauber-type calculation to heavier-mass nuclei considering the EMD effect.
References
[1] M. Takechi et al., Phys. Rev. C 79 (2009) 061601.
[2] W. Horiuchi et al., Phys. Rev. C 93 (2016) 044611.
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Presenters
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Norihide Noguchi
- Niigata University
- Niigata Univ.