ADOPTED LEVELS, GAMMAS for 20N
Authors: C.G. Sheu, J.H. Kelley | Citation: ENSDF | Cutoff date: 31-Dec-2018
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=17970 keV 80 | S(n)= 2160 keV 80 | S(p)= 1.794×104 keV 13 | Q(α)= -17770 keV 80 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 1H(21N,20N) | B | 9Be(36S,20N),12C(X,20NG) |
| C | 9Be(40Ar,20N) | D | 9Be(48Ca,20N) |
| E | C(20N,X) | F | C(21N,20N) |
| G | SI(20N,X) | H | 20C β- decay |
| I | 21N(p,PN) | J | NI(40Ar,20N) |
| K | 48Ca(18O,20N) | L | 181Ta(40Ar,20N) |
| M | 181Ta(48Ca,20N) | N | 181Ta(86Kr,20N) |
| O | 208Pb(20N,20NG):COULEX | P | 208Pb(21N,20NG) |
| Q | 232Th(p,20N) | R | 232Th(18O,20N) |
| S | 232Th(22Ne,20N) | T | U(p,20N) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
| 0 | ABCDEFGH JKLMNOPQRST | (2-) | 134.4 ms 37 % β- = 100 % β-n = 42.9 14 | ||||
| 843 4 | AB | (3-) | % IT = 100 | 843 4 | 100 14 | 0 | (2-) |
| 944 24 | AB | % IT = 100 | 944 24 | 100 | 0 | (2-) | |
| 1336 23 | B | (1-,2-) | % IT = 100 | 1336 23 | 100 | 0 | (2-) |
| 1559 30 | AB | % IT = 100 | 615 18 | 100 | 944 | ||
| 1895 34 | B | (3-) | % IT > 0 | 1052 29 | 100 | 843 | (3-) |
| 2943 32 | B | (4-) | % IT > 0 | 2100 26 | 100 | 843 | (3-) |
| 3500? | O | % n ≈ 100 % IT > 0 | |||||
| 4600? | O | % n ≈ 100 % IT > 0 | |||||
| 5500 | O | % n ≈ 100 % IT > 0 | |||||
| 7000 | O | % n ≈ 100 % IT > 0 | |||||
| 9000 | O | % n ≈ 100 % IT > 0 | |||||
| 10200 | O | % n ≈ 100 % IT > 0 | |||||
| 11500 | O | % n ≈ 100 % IT > 0 | |||||
Jπ(level): From comparison with shell-model calculations
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (2-) | 134.4 ms 37 % β- = 100 % β-n = 42.9 14 | %β-n: From (2006Su12). E(level): %β-n: From (2006Su12). |
The nucleus 20N is particle stable. Its atomic mass excess is 21.770 MeV 80 (2017Wa10).
α review of the production of nuclei far from stability is presented in (1989VoZM). Bulk properties of 20N have been calculated or analyzed with general theoretical models in (1988PoZS, 1992Wa22, 1993Pa14, 1993Po11, 1997Ba54, 2000Zh42, 2002Ka73, 2004La24, 2004Ne16, 2006Ko02, 2012Yu07, 2015Sh21, 2016Ma06, 2016Zh05, 2018Fo04).