ADOPTED LEVELS for 4He

Author: J. H. KELLEY, D. R. TILLEY, H.R. WELLER AND G.M. HALE    

Full ENSDF file

Q(β-)=-2.290E4 keV 22    Sn= 2.058E4 keV    Sp= 1.981E4 keV    

References:
A: 2H(d,n)
B: 2H(d,p)
C: 2H(d,d)
D: 3H(p,γ)
E: 3He(n,p)
F: 4He(γ,X)
G: 4He(e,e')
H: 4He(n,n)
I: 4He(3He,3He)
J: 4He(α,α),4He(α,α')
K: 4He(n,t)
L: 4He(p,3He),4He(p,)

Elevel
(keV)
XREF T1/2
      0.0             0+ STABLE
  20210    E GHI K  0+ 0.50 MeV
% p = 100
  21010       H     0- 0.84 MeV
% n = 24
% p = 76
  21840       H J   2- 2.01 MeV
% n = 37
% p = 63
  23330             2- 5.01 MeV
% n = 47
% p = 53
  23640             1- 6.20 MeV
% IT = ?
% n = 45
% p = 55
  24250AB           1- 6.10 MeV
% n = 47
% p = 50
% D = 3
  25280             0- 7.97 MeV
% n = 48
% p = 52
  25950   D         1- 12.66 MeV
% IT = ?
% n = 48
% p = 52
  27420  C     I  L 2+ 8.69 MeV
% n = 3
% p = 3
% D = 94
  28310             1+ 9.89 MeV
% n = 47
% p = 48
% D = 5
  28370ABC     I    1- 3.92 MeV
% n = 2
% p = 2
% D = 96
  28390ABC          2- 8.75 MeV
% n = 0.2
% p = 0.2
% D = 99.6
  28640  C          0- 4.89 MeV
% D = 100
  28670  C  F       2+ 3.78 MeV
% IT = ?
% D = 100
  29890        I    2+ 9.72 MeV
% n = 0.4
% p = 0.4
% D = 99.2