Table 1 Resonant states in 14C.

From: Nuclear linear-chain structure arises in carbon-14

This work

Exp.24,25,26,27,28,29,30,31

AMD14,15

Ex (MeV)

Jπ

Γtot (keV)

Ex (MeV)

Ex (MeV)

Jπ

12.9(1)a

 

30(10)

13.0, 13.1a

  

13.4(1)a

 

30(10)

   

13.9(1)a

0+

150(30)

14.1a

14.64

\({0}_{4}^{+}\)

14.4(1)a

 

30(20)

14.3a

  

14.9(1)a

2+

100(20)

14.7–14.9a

15.73

\({2}_{5}^{+}\)

15.6(1)a

3

180(40)

15.5, 15.6a,c

  

16.4(1)a

 

140(30)

16.4, 16.5a,b

  

16.7(1)b

 

60(30)

   

17.3(1)a,b

4+

120(30)

17.3a,b

17.98

\({4}_{5}^{+}\)

17.9(1)a,b

 

40(20)

17.8, 17.9a,b

  

18.5(1)a,b

 

80(40)

18.4–18.8a,b

  
  1. Excitation energies (Ex), spin-parities (Jπ) and total decay widths (Γtot) of the observed resonances in 14C, compared to those from the previous experiments24,25,26,27,28,29,30,31 and antisymmetrized molecular dynamics (AMD) calculations14,15. The uncertainties in the parentheses are explained in the “Excitation energy spectra” subsection.
  2. aDecaying into 10Be(g.s.).
  3. bDecaying into 10Be(\({2}_{1}^{+}\)).
  4. cAssigned a spin-parity of 328.