Changes in mean-squared charge radii and magnetic moments of
Tl measured by in-source laser spectroscopy
イン・ソース分光測定によって明らかにした
Tl同位体における電荷半径と磁気モーメントの変化
Barzakh, A.*; Andreyev, A. N.; Cocolios, T. E.*; de Groote, R. P.*; Fedorov, D. V.*; Fedosseev, V. N.*; Ferrer, R.*; Fink, D. A.*; Ghys, L.*; Huyse, M.*; K
ster, U.*; Lane, J.*; Liberati, V.*; Lynch, K. M.*; Marsh, B. A.*; Molkanov, P. L.*; Procter, T. J.*; Rapisarda, E.*; Rothe, S.*; Sandhu, K.*; Seliverstov, M. D.*; Sj
din, A. M.*; Van Beveren, C.*; Van Duppen, P.*; Venhart, M.*; Veselsk
, M.*
Barzakh, A.*; Andreyev, A. N.; Cocolios, T. E.*; de Groote, R. P.*; Fedorov, D. V.*; Fedosseev, V. N.*; Ferrer, R.*; Fink, D. A.*; Ghys, L.*; Huyse, M.*; K
ster, U.*; Lane, J.*; Liberati, V.*; Lynch, K. M.*; Marsh, B. A.*; Molkanov, P. L.*; Procter, T. J.*; Rapisarda, E.*; Rothe, S.*; Sandhu, K.*; Seliverstov, M. D.*; Sj
din, A. M.*; Van Beveren, C.*; Van Duppen, P.*; Venhart, M.*; Veselsk
, M.*
Hyperfine structure and isotope shifts have been measured for the ground and isomeric states in the neutron deficient isotopes
Tl using the 276.9 nm transition. The experiment has been performed at the CERN Isotope Separator On-Line facility using the in-source resonance-ionization laser spectroscopy technique. Spins for the ground states in
Tl have been determined as
= 1/2. Magnetic moments and changes in the nuclear mean-square charge radii have been deduced. By applying the additivity relation for magnetic moments of the odd-odd Tl nuclei the leading configuration assignments were confirmed. A deviation of magnetic moments for isomeric states in
Tl from the trend of the heavier Tl nuclei is observed. The charge radii of the ground states of the isotopes
Tl follow the trend for isotonic (spherical) lead nuclei. The noticeable difference in charge radii for ground and isomeric states of
Tl has been observed, suggesting a larger deformation for the intruder-based 9/2
and 10
states compared to the ground states. An unexpected growth of the isomer shift for
Tl has been found.