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The atomic mass excess given by (88WA18) for ¹⁷C is 21035 ± 17 keV. See also (86AN07). ¹⁷C is then stable with respect to ¹⁶C + n by 0.73 MeV. E_β^- (max) to ¹⁷N_g.s. = 13.16 MeV. See also (86BI1A). The half-life of ¹⁷C has been measured to be 202 ± 17 msec (86CU01), 220 ± 80 msec (86DU07), 180 ± 31 msec (88SA04), and 174 ± 31 msec (91RE02). Relative intensities of β-delayed gammas were measured by (86DU07, 86HU1A, 86JE1A) [see Table 17.1 (in PDF or PS)]. Observation of β-delayed neutron emission has been reported and the probability measured to be (32.0 ± 2.7)% by (91RE02). See also (88MU08). Total cross sections induced by ¹⁷C on Cu were measured by (89SA10). See also (87SA25). An excited state of ¹⁷C is reported at E_x = 292 ± 20 keV [see (82AJ01)] and at 295 ± 10 keV (82FI10). Three closely spaced low-lying states are expected [J^π = 5/2⁺, 3/2⁺, 1/2⁺] (82CUZZ, 89WA06): it is not clear which is the ground state. See also (86AJ04).

Shell-model calculations of energy spectra and wave functions and predictions of half lives and β-decay modes are described in (89WA06). Hartree-Fock calculations of light neutron-rich nuclei including ¹⁷C are discussed in (87SA15). See also the study of partitioning of a two component particle system in (87SN1A).