ADOPTED LEVELS for 10N
Authors: M.S. Narijauskas, J.H. Kelley, C.G. Sheu | Citation: ENSDF | Cutoff date: 20-July-2017
Full ENSDF file | Adopted Levels (PDF version)
| S(p)= -1.9×103 keV 2 | Q(α)= -11.6×103 keV 20 | ||||
| Reference: 2017Ho10 |
| References: | |||
| A | 1H(9C,p) | B | 10B(14N,14B) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0 | A | (1-) | 2.5 MeV +20-15 % p = 100 |
| 0.9E3 3 | AB | (2-) | 2.0 MeV +7-5 % p = 100 |
E(level): Eg.s. from Eres(9C+p)=1.9 MeV 2. See alternate analysis described in 1H(9C,p).
T1/2(level): Γp≈Γ
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (1-) | 2.5 MeV +20-15 % p = 100 | T=2 Erel.(9C+p) (MeV)=1.9 2. |
| 0.9E3 | (2-) | 2.0 MeV +7-5 % p = 100 | T=2 Erel.(9C+p) (MeV)=2.8 2. |
The mass excess of 10N is 38.1 MeV 2 (2017Ho10); see also ΔM=38.8 MeV 4 (2017Wa10).
The 10N nucleus is particle unstable to proton decay. Early theoretical studies, often guided by comparisons with 10Li, were focused on predictions of its ground state binding energy (1974Ir04, 1982Ng01, 1984An18, 1997Ba54, 1997Po12, 2000Po32, 2009Ba41). In (1997Ao05, 2001Ao04) a detailed comparison of measured 10Li and predicted 10N properties is given that suggests the low-lying ground state may be determined by an s-wave resonance in the 9C+p system.
On the other hand, discussion in 2004Ti06 suggested the Erel(9C+p)=2.6 MeV observed in the 10B(14N,14B)10N reaction was explained by large L=2 two-nucleon transfer amplitudes calculated for 10β+2p|)12Ng.s. and 12Ng.s.|)10N(1+), and that the observed state was the analog of the 0.24 MeV Jπ=1+ state of 10Li. The same view point is expressed in 2013Sh19. However, so far there is no experimental evidence in support of Jπ=1+ for any 10N states.
The near-threshold s-wave state in 9Li+n (see 10Li) implies a broad s-wave ground state about 1.8 MeV above the 9C+p threshold in 10N; see calculations and discussion in (2004Ti06, 2013Fo22, 2013Sh19).