Nuclear data explorer · compound nucleus
6Be
6Be is formed when 3He + 3He 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 6Be: entrance pair (rows) and the quantities measured (columns), with the energies covered.
| Reaction | Datasets | σ | S | dσ/dΩ | Ay | other | Fitted in evaluation |
|---|---|---|---|---|---|---|---|
| 3He(3He,el) | 10 | — (0) | — (0) | 61.5 MeV – 9.4 MeV | 49 MeV – 16 MeV | — (0) | |
| 3He(3He,γ)6Be | 2 | — (0) | — (0) | 25.9 MeV – 13 MeV | — (0) | — (0) | |
| 3He(3He,p)5Li | 2 | — (0) | — (0) | 23.4 MeV – 6.8 MeV | — (0) | — (0) | |
| 3He(3He,inl) | 1 | — (0) | — (0) | — (0) | — (0) | 160 MeV |
7 more reactions: heavier projectiles, several outgoing particles or inclusive data
| Reaction | Datasets | σ | S | dσ/dΩ | Ay | other | Fitted in evaluation |
|---|---|---|---|---|---|---|---|
| 3He(3He,2p) | 21 | 630 keV – 12 MeV | 817 keV – 3 MeV | 7100 keV – 4.5 MeV | — (0) | — (0) | |
| 3He(3He,x) | 8 | 58.9 MeV – 12 MeV | — (0) | 111 MeV | — (0) | 23.4 MeV – 4.6 MeV | |
| 3He(3He,3p) | 6 | 18.9 MeV – 12 MeV | — (0) | 170 MeV | — (0) | 470 MeV | |
| 3He(3He,2p+d) | 1 | 112 MeV | — (0) | — (0) | — (0) | — (0) | |
| 3He(3He,n+2p) | 1 | 18.9 MeV – 12 MeV | — (0) | — (0) | — (0) | — (0) | |
| 3He(3He,non) | 1 | 18.9 MeV – 12 MeV | — (0) | — (0) | — (0) | — (0) | |
| 3He(3He,p+d) | 1 | 18.9 MeV – 12 MeV | — (0) | — (0) | — (0) | — (0) |
Level scheme
Adopted levels of 6Be 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 3He(3He,2p)4He threshold (S = 11487 keV) and the top of the Gamow window at T9 = 0.0157 (50 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 6Be (5)
| E (keV) | Jπ | T½ or Γ | γ branches |
|---|---|---|---|
| 0 | 0+ | Γ = 92 keV | – |
| 1670 | (2)+ | Γ = 1.16 MeV | – |
| 23000 | 4- | – | – |
| 26000 | 2- | – | – |
| 27000 | 3- | – | – |