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²⁰Mg has been populated in the ²⁴Mg(α, ⁸He) reaction at E_α = 127 and 156 MeV, in the ²⁰Ne(³He, 3n) reaction at E(³He) = 70 MeV, and more recently in projectile fragmentation reactions. Reviews of proton rich nuclei and methods of production are presented in (1989AYZU, 1993SO13). See also (1990PO04). The super-allowed decay of ²⁰Mg to the first T = 2 (J^π = 0⁺) state of ²⁰Na [E_x = 6.534 ± 0.013 MeV (1995PI03)] has been reported in early work (1979MO02, 1987AJ02) and more recently by (1992KU07, 1992GO10, 1993PIZZ, 1995PI03), who also observed β decay to other proton-unstable ²⁰Na states [see ²⁰Na, reaction 10]. Lifetime measurements for ²⁰Mg have given τ_1/2 = 95⁺⁸⁰_-50 ms (1979MO02), 114 ± 17 ms (1992KU07), 82 ± 4 ms (1992GO10), and 95 ± 3 ms (1995PI03). High-energy interaction cross sections of ²⁰Mg on carbon have been measured by (1996CH24, 1996KR1A). Nuclear matter radii obtained from these data show evidence for a proton skin for ²⁰Mg.

In related theoretical work, shell model calculations for isospin-forbidden β delayed proton emission are described in (1990BR26); also see the mass calculation (1992AV03). Coulomb displacement energies analyzed by (1996CH04) show some evidence for a proton halo. Ground state properties have been studied using relativistic mean field theory (1996RE03, 1996RE10) and deformed Hartree-Fock-Bogoliubov calculations (1996GR21).