Abstract
The nuclear electric quadrupole moment (Q moment) of the neutron-rich nucleus 33Al (I = 5/2 , T 1/2 = 41 ms) has been measured by the \( \beta\) -ray detected nuclear quadrupole resonance (\( \beta\) -NQR) method for the first time. The 33Al nucleus is considered to be on the border of the island of inversion within which a significant intrusion of the pf orbits occurs across the N = 20 shell gap and the intrusion causes an anomalous enhancement of the Q moment. Polarized 33Al nuclei were produced from 36S (77.5MeV/u beams through the fragmentation process and separated by LISE fragment separator at GANIL. The 33Al nuclei were implanted into a Al2O3 single-crystal plate and the \( \beta\) -NQR spectrum was successfully obtained.
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References
C. Detraz et al., Phys. Rev. C 19, 164 (1979).
D. Guillemaud et al., Nucl. Phys. A 426, 37 (1984).
T. Motobayashi et al., Phys. Lett. B 346, 9 (1995).
E.K. Warburton, J.A. Becker, B.A. Brown, Phys. Rev. C 41, 1147 (1990).
G. Huber et al., Phys. Rev. C 18, 2342 (1978).
M. Keim et al., Eur. Phys. J. A 8, 31 (2000).
G. Neyens et al., Phys. Rev. Lett. 94, 022501 (2005).
D.T. Yordanov et al., Phys. Rev. Lett. 99, 212501 (2007).
H. Ueno et al., Phys. Lett. B 615, 186 (2005).
D. Nagae et al., Phys Rev. C 79, 027301 (2009).
D. Kameda et al., Phys. Lett. B 647, 93 (2007).
P. Himpe et al., Phys. Lett. B 643, 257 (2006).
P. Himpe et al., Phys. Lett. B 658, 203 (2008).
Y. Utsuno, private communication.
S.J. Gravina et al., J. Magn. Res. 89, 515 (1990).
V. Kellö et al., Chem. Phys. Lett. 304, 414 (1999).
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Nagatomo, T., Shimada, K., Asahi, K. et al. Electric quadrupole moment of the neutron-rich 33Al. Eur. Phys. J. A 42, 383–385 (2009). https://doi.org/10.1140/epja/i2009-10885-3
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DOI: https://doi.org/10.1140/epja/i2009-10885-3