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Electric quadrupole moments of neutron-rich nuclei 32Al and 31Al

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Abstract

The electric quadrupole moments for the ground states of 32Al and 31Al have been measured by the β ray-detected nuclear quadrupole resonance method. Spin-polarized 32Al and 31Al nuclei were obtained from the fragmentation of 40Ar projectiles at E/A = 95 MeV/nucleon, and were implanted in a single crystal α-Al2O3 stopper. The measured Q moment of 32Al, |Q(32Al)| = 24(2) mb, is in good agreement with a conventional shell-model calculation with a full sd model space and empirical effective charges, while that of 31Al is considerably smaller than the sd calculations.

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Correspondence to D. Kameda.

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Kameda, D., Ueno, H., Asahi, K. et al. Electric quadrupole moments of neutron-rich nuclei 32Al and 31Al. Hyperfine Interact 180, 61–64 (2007). https://doi.org/10.1007/s10751-008-9685-x

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