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¹⁹C has been observed in the 0.8 GeV proton bombardment of thorium (1986VI09, 1988WO09) and in the fragmentation of 66 MeV/A argon ions (1987GI05) and in 44 MeV/A ²²Ne on ¹⁸¹Ta, and in 112 MeV/A ²⁰Ne on ¹²C (1994RAZW, 1995OZ02). The mass excess adopted by (1993AU05) is 32.23 ± 0.11 MeV. See also (1986VI09, 1987GI05, 1988WO09, 1991OR01). ¹⁹C is then stable with respect to decay into ¹⁸C + n by 0.16 MeV and into ¹⁷C + 2n by 4.35 MeV. The half-life was measured to be 30 ± 10 ms (1988DUZT) and 45.5 ± 4.0 ms (1994RAZW). The total reaction cross section for ¹⁹C on Cu has been measured by (1989SA10). See also (1987DUZU) and the review of exotic light nuclei of (1989DE52).

Hartree-Fock calculations by (1987SA15) predicted ground state properties and spectra of ¹⁹C and other exotic light nuclei. A shell model study is presented in (1992WA22). Microscopic predictions of β-decay half lives are discussed in (1990ST08). The relative yields of carbon isotopes produced in the fragmentation of ⁸⁴Kr are calculated in (1987SN01). See also the study by (1992LA13) of the influence of separation energy on the radius of neutron rich nuclei.