Nuclear data explorer · compound nucleus
21Na
21Na is formed when 20Ne + p fuse. Its levels just above each threshold are the resonances that set those reactions' rates.
Channels and what has been measured
Every EXFOR reaction that forms 21Na: entrance pair (rows) and the quantities measured (columns), with the energies covered.
| Reaction | Datasets | σ | S | σ→Eₓ | dσ/dΩ | Ay | Y | ωγ | MACS | other | Fitted in evaluation |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20Ne(p,γ)21Na | 20 | 11.1 MeV | 11.1 MeV | 6250 keV – 1.8 MeV | 2350 keV – 2.1 MeV | — (0) | 11.1 MeV | 7350 keV – 1.1 MeV | — (0) | 2350 keV | 21Na |
| 20Ne(p,inl) | 28 | — (0) | — (0) | 52 MeV – 13 MeV | 211.8 MeV – 750 MeV | 24.5 MeV – 750 MeV | — (0) | — (0) | — (0) | — (0) | |
| 20Ne(p,el) | 27 | — (0) | — (0) | — (0) | 20290 keV – 750 MeV | 53.7 MeV – 750 MeV | — (0) | 26.5 MeV – 6.8 MeV | — (0) | — (0) | 21Na |
| 20Ne(p,d)19Ne | 7 | — (0) | — (0) | — (0) | 729 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | |
| 20Ne(p,α)17F | 4 | 25.3 MeV – 12 MeV | — (0) | — (0) | — (0) | — (0) | 210 MeV – 11 MeV | — (0) | — (0) | — (0) | |
| 20Ne(p,n)20Na | 4 | — (0) | — (0) | — (0) | 322 MeV – 130 MeV | — (0) | — (0) | — (0) | — (0) | 1130 MeV | |
| 20Ne(p,t)18Ne | 3 | — (0) | — (0) | — (0) | 340 MeV – 48 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | |
| 20Ne(p,3He)18F | 1 | — (0) | — (0) | — (0) | 129 MeV | — (0) | — (0) | — (0) | — (0) | — (0) |
9 more reactions: heavier projectiles, several outgoing particles or inclusive data
| Reaction | Datasets | σ | S | σ→Eₓ | dσ/dΩ | Ay | Y | ωγ | MACS | other | Fitted in evaluation |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20Ne(p,0) | 6 | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | 46.5 MeV – 6.8 MeV | — (0) | 26.5 MeV – 6.8 MeV | |
| 20Ne(p,x) | 4 | 129 MeV – 38 MeV | — (0) | — (0) | 138 MeV | — (0) | — (0) | — (0) | 2 | — (0) | |
| 14N(7Be,el) | 3 | — (0) | — (0) | — (0) | 357 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | |
| 9Be(12N,abs) | 2 | 220 MeV – 310 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | |
| 14N(7Be,8B)13C | 1 | — (0) | — (0) | — (0) | 157 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | |
| 20Ne(p,non) | 1 | 122 MeV – 45 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | |
| 20Ne(p,p+α) | 1 | — (0) | — (0) | 112 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | |
| 20Ne(p,tot) | 1 | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | 16.5 MeV – 6.8 MeV | — (0) | — (0) | |
| 9Be(12N,non) | 1 | 120 MeV – 30 MeV | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) | — (0) |
Level scheme
Adopted levels of 21Na from ENSDF, with the particle thresholds and the Gamow window of the selected channel drawn across them.
- level in the window with a measured ωγ
- level in the window with no ωγ in EXFOR
- Jπ in parentheses or in italics is tentative.
Resonances in the window
Levels between the 20Ne(p,γ)21Na threshold (S = 2431.9 keV) and the top of the Gamow window at T9 = 0.08 (135 keV above it), with the resonance strengths ωγ EXFOR holds for them.
Looking for measured strengths…
| E (keV) | E_r (keV, c.m.) | Jπ | T½ or Γ | ωγ measured |
|---|---|---|---|---|
| ENSDF lists no level in this window. | ||||
A strength is matched to a level when its resonance energy plus the threshold lies within max(3 keV, 3σ) of the level energy.
Levels of 21Na (63)
| E (keV) | Jπ | T½ or Γ | γ branches |
|---|---|---|---|
| 0 | 3/2+ | T½ = 22.5 s | – |
| 331.9 | 5/2+ | T½ = 7.08 ps | → 0 (100 %) |
| 1716.1 | 7/2+ | T½ = 37 fs | → 331.9 (93 %), → 0 (7 %) |
| 2423.8 | 1/2+ | T½ = 1.7 fs | → 0 (100 %) |
| 2797.9 | 1/2- | T½ = 13 fs | → 2423.8 (56 %), → 331.9 (11 %), → 0 (33 %) |
| 2829.1 | 9/2+ | – | → 1716.1 (63 %), → 331.9 (37 %) |
| 3544.3 | 5/2+ | Γ = 15.5 eV | → 1716.1 (6 %), → 331.9 (2 %), → 0 (92 %) |
| 3678.9 | 3/2- | Γ = 193 eV | → 2797.9 (23 %), → 2423.8 (17 %), → 331.9 (60 %) |
| 3862.2 | 5/2- | Γ = 2.6 eV | → 331.9 (69 %), → 0 (31 %) |
| 4169.6 | 3/2- | Γ = 180 keV | → 2423.8 (40 %), → 331.9 (60 %) |
| 4294.3 | 5/2+ | Γ = 3.93 keV | → 1716.1 (0.99 %), → 331.9 (62 %), → 0 (37 %) |
| 4419 | (11/2+) | – | – |
| 4467.9 | 3/2+ | Γ = 21 keV | → 331.9 (47 %), → 0 (53 %) |
| 4984 | 1/2- | Γ = 200 keV | – |
| 5020 | (3/2,5/2,7/2)+ | – | – |
| 5380 | (3/2,5/2,7/2)+ | – | – |
| 5457 | 1/2+ | Γ = 110 keV | – |
| 5770 | (3/2,5/2,7/2)+ | Γ = 20 keV | – |
| 5815 | 7/2- | Γ = 400 eV | – |
| 5828 | 3/2- | Γ = 25 keV | – |
| 5884 | (3/2,5/2,7/2)+ | – | – |
| 5979 | (3/2,5/2,7/2)+ | – | – |
| 6070 | (5/2,7/2)- | Γ = 5 keV | – |
| 6165 | (3/2,5/2,7/2)+ | – | – |
| 6341 | (3/2,5/2,7/2)+ | – | – |
| 6468 | 3/2+ | Γ = 145 keV | – |
| 6879 | 3/2- | Γ = 22 keV | – |
| 6992 | 7/2- | Γ = 35 keV | – |
| 7253 | 1/2+ | Γ = 220 keV | – |
| 7571 | 3/2- | Γ = 116 keV | – |
| 7575 | 1/2- | Γ = 128 keV | – |
| 7609 | 3/2+ | Γ = 112 keV | – |
| 7930 | 5/2- | Γ = 28 keV | – |
| 7946 | 7/2- | Γ = 25 keV | – |
| 7960 | 1/2- | Γ = 58 keV | – |
| 8097 | 3/2- | Γ = 25 keV | – |
| 8135 | 5/2+ | Γ = 32 keV | – |
| 8303 | (3/2,5/2,7/2)+ | – | – |
| 8388 | 1/2+ | Γ = 21 keV | – |
| 8397 | 3/2+ | Γ = 30 keV | – |
| 8464 | 3/2+ | Γ = 25 keV | – |
| 8554 | 1/2+ | Γ = 100 keV | – |
| 8562 | 3/2+ | Γ = < 20 keV | – |
| 8595 | 5/2+ | Γ = 138 keV | – |
| 8624 | 1/2- | Γ = 92 keV | – |
| 8715 | 3/2+ | Γ = 360 keV | – |
| 8738 | 3/2- | Γ = 110 keV | – |
| 8742 | 1/2+ | Γ = 98 keV | – |
| 8827 | 5/2+ | Γ = 138 keV | – |
| 8960 | 1/2+ | Γ = 25 keV | – |
| 8976 | 5/2+ | Γ = 650 eV | – |
| 8981 | 5/2+ | Γ = 23 keV | – |
| 9051 | 7/2- | Γ = 36 keV | – |
| 9155 | 3/2+ | Γ = 34 keV | – |
| 9217 | 1/2+ | Γ = 2.8 keV | – |
| 9280 | (3/2,5/2,7/2) | – | – |
| 9348 | 1/2+ | Γ = 23 keV | – |
| 9563 | 7/2- | Γ = 63 keV | – |
| 9725 | 3/2+ | Γ = 256 keV | – |
| 9775 | 1/2- | Γ = 56 keV | – |
| 9779 | 7/2- | Γ = 41 keV | – |
| 9808 | 3/2- | Γ = 80 keV | – |
| 10050 | – | – | – |