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19C (1995TI07)

(See the Isobar Diagram for 19C)

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.