Skip to content
Jakub Skowronski

Nuclear data explorer · compound nucleus

2H

2H is formed when 1H + n 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 2H: entrance pair (rows) and the quantities measured (columns), with the energies covered.

Every EXFOR reaction that forms ²H: entrance pair (rows) and the quantities measured (columns), with the energies covered.
ReactionDatasetsσσ→Eₓdσ/dΩAyMACSotherFitted in evaluation
1H(n,γ)2H782713 meV – 38 MeV315 meV99.6 MeV – 340 MeV83 MeV – 230 MeV2430 keV710 meV – 90 MeV
1H(n,el)316222.1 meV – 360 MeV— (0)154290 eV – 2100 MeV11713 meV – 520 MeV4190.9 meV – 26 MeV
1H(n,inl)315900 MeV— (0)— (0)— (0)— (0)27.2 MeV – 100 MeV
6 more reactions: heavier projectiles, several outgoing particles or inclusive data
6 more reactions: heavier projectiles, several outgoing particles or inclusive data
ReactionDatasetsσσ→Eₓdσ/dΩAyMACSotherFitted in evaluation
1H(n,tot)1621400.22 meV – 2500 MeV— (0)— (0)— (0)101.4 MeV120.9 meV – 36 MeV
1H(n,ths)36210.18 meV – 66 eV— (0)129 meV— (0)1131.1 meV – 35 meV
1H(n,2γ)314.5 meV— (0)— (0)— (0)2— (0)
1H(n,γ+n)3138 MeV— (0)— (0)— (0)— (0)238 MeV
1H(n,sct)31— (0)— (0)— (0)— (0)27.2 MeV
1H(n,pin+pip+n)22— (0)— (0)— (0)— (0)— (0)

Level scheme

Adopted levels of 2H from ENSDF, with the particle thresholds and the Gamow window of the selected channel drawn across them.

Level scheme
0.0001+Gamow window, T₉ = 0.8S(n) = 2.225 MeVS(p) = 2.225 MeVE (MeV)
  • 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 1H(n,γ)2H threshold (S = 2224.6 keV) and the top of the Gamow window at T9 = 0.8 (155 keV above it), with the resonance strengths ωγ EXFOR holds for them.

Looking for measured strengths…

Resonances in the window
E (keV)E_r (keV, c.m.)JπT½ or Γωγ 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 2H (1)
Levels of ²H
E (keV)JπT½ or Γγ branches
01+––