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Jakub Skowronski

Nuclear data explorer · compound nucleus

21Ne

21Ne is formed when 17O + α 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 21Ne: entrance pair (rows) and the quantities measured (columns), with the energies covered.

Every EXFOR reaction that forms ²¹Ne: entrance pair (rows) and the quantities measured (columns), with the energies covered.
ReactionDatasetsσSσ→Eₓdσ/dΩAyYωγMACSotherFitted in evaluation
17O(α,n)20Ne135400 keV – 10 MeV— (0)4560 keV – 1.9 MeV17.9 MeV – 9.9 MeV— (0)— (0)22.5 MeV— (0)1
19F(d,α)17O50— (0)— (0)8270 keV – 13 MeV39250 keV – 25 MeV— (0)— (0)120 MeV— (0)2630 keV – 3.1 MeV
19F(d,p)20F241630 keV – 1.6 MeV— (0)3760 keV – 2.7 MeV19210 keV – 3.6 MeV— (0)— (0)— (0)— (0)1630 keV – 3.1 MeV
20Ne(n,γ)21Ne20324 meV – 200 keV— (0)125 keV – 47 keV— (0)— (0)— (0)4104.7 keV – 100 keV224 meV – 4.8 MeV
19F(d,t)18F1634.5 MeV – 14 MeV— (0)16.3 MeV – 7.2 MeV126.3 MeV – 18 MeV— (0)— (0)— (0)— (0)— (0)
20Ne(n,α)17O1641.7 MeV – 13 MeV— (0)72.7 MeV – 14 MeV513 MeV – 14 MeV— (0)— (0)— (0)— (0)— (0)
17O(α,t)18F14— (0)— (0)— (0)1452 MeV— (0)— (0)— (0)— (0)— (0)
17O(α,3He)18O11— (0)— (0)— (0)1152 MeV— (0)— (0)— (0)— (0)— (0)
20Ne(n,el)8124 meV— (0)— (0)11.8 MeV – 1.9 MeV— (0)— (0)4— (0)224 meV
17O(α,γ)21Ne7— (0)1620 keV – 1.5 MeV— (0)— (0)— (0)— (0)3500 keV – 1.1 MeV— (0)3610 keV – 1.3 MeV
19F(d,n)20Ne7— (0)— (0)— (0)72.3 MeV – 15 MeV— (0)— (0)— (0)— (0)— (0)
20Ne(n,p)20F5— (0)— (0)213 MeV – 14 MeV313 MeV – 280 MeV— (0)— (0)— (0)— (0)— (0)
18O(3He,d)19F4— (0)— (0)— (0)414 MeV – 23 MeV— (0)— (0)— (0)— (0)— (0)
17O(α,el)2— (0)— (0)— (0)144 MeV— (0)— (0)11.8 MeV – 5.3 MeV— (0)— (0)
18O(3He,el)2— (0)— (0)— (0)212 MeV – 21 MeV— (0)— (0)— (0)— (0)— (0)
19F(d,3He)18O2— (0)— (0)— (0)247 MeV— (0)— (0)— (0)— (0)— (0)
19F(d,el)2— (0)— (0)— (0)1830 keV – 1.8 MeV11.7 MeV – 2.7 MeV— (0)— (0)— (0)— (0)
17O(α,d)19F1— (0)— (0)— (0)138 MeV— (0)— (0)— (0)— (0)— (0)
18O(3He,p)20F1— (0)— (0)— (0)115 MeV— (0)— (0)— (0)— (0)— (0)
18O(3He,t)18F1— (0)— (0)— (0)114 MeV— (0)— (0)— (0)— (0)— (0)
19F(d,6Li)15N1— (0)— (0)— (0)118 MeV— (0)— (0)— (0)— (0)— (0)
19F(d,7Li)14N1— (0)— (0)— (0)118 MeV— (0)— (0)— (0)— (0)— (0)
19F(d,inl)1— (0)— (0)— (0)14.1 MeV— (0)— (0)— (0)— (0)— (0)
20Ne(n,d)19F1— (0)— (0)— (0)113 MeV— (0)— (0)— (0)— (0)— (0)
20Ne(n,inl)1— (0)— (0)11.8 MeV – 14 MeV— (0)— (0)— (0)— (0)— (0)— (0)
37 more reactions: heavier projectiles, several outgoing particles or inclusive data
37 more reactions: heavier projectiles, several outgoing particles or inclusive data
ReactionDatasetsσSσ→Eₓdσ/dΩAyYωγMACSotherFitted in evaluation
9Be(12C,x)65352 MeV— (0)— (0)— (0)— (0)3560 keV – 34 MeV— (0)— (0)59130 keV – 130 MeV
20Ne(n,0)16— (0)— (0)— (0)— (0)— (0)— (0)15450 keV— (0)1
7Li(14N,inl)15— (0)— (0)— (0)1527 MeV – 37 MeV— (0)— (0)— (0)— (0)— (0)
4He(17O,el)8— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)81.5 MeV – 9 MeV
20Ne(n,tot)734.9 keV – 3.3 MeV— (0)— (0)— (0)— (0)— (0)4450 keV— (0)— (0)
12C(9Be,el)6— (0)— (0)— (0)67.4 MeV – 23 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,8Be)13C5— (0)— (0)— (0)511 MeV— (0)— (0)— (0)— (0)— (0)
17O(α,0)4— (0)— (0)— (0)— (0)— (0)— (0)4520 keV – 1.1 MeV— (0)— (0)
19F(d,x)426 MeV – 18 MeV15.4 MeV – 5.5 MeV— (0)— (0)— (0)120 MeV— (0)— (0)— (0)
7Li(14N,x)445.2 MeV— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)
11B(10B,fus)2111 MeV – 27 MeV— (0)— (0)116 MeV – 25 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,α)17O2— (0)— (0)— (0)26.9 MeV – 15 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,d)19F2— (0)— (0)— (0)26.9 MeV – 15 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,non)226.9 MeV – 15 MeV— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)
12C(9Be,p)20F2— (0)— (0)— (0)26.9 MeV – 15 MeV— (0)— (0)— (0)— (0)— (0)
6Li(15N,el)2— (0)— (0)— (0)223 MeV— (0)— (0)— (0)— (0)— (0)
6Li(15N,inl)2— (0)— (0)— (0)223 MeV— (0)— (0)— (0)— (0)— (0)
7Li(14N,el)2— (0)— (0)— (0)227 MeV – 37 MeV— (0)— (0)— (0)— (0)— (0)
9Be(12C,el)2— (0)— (0)— (0)25.1 MeV – 28 MeV— (0)— (0)— (0)— (0)— (0)
9Be(12C,inl)2152 MeV— (0)— (0)128 MeV— (0)— (0)— (0)— (0)— (0)
11B(10B,el)1— (0)— (0)— (0)113 MeV – 25 MeV— (0)— (0)— (0)— (0)— (0)
11B(10B,non)1113 MeV – 25 MeV— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)
12C(9Be,10Be)11C1— (0)— (0)— (0)123 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,8B)13B1— (0)— (0)— (0)123 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,fus)116.9 MeV – 15 MeV— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)
12C(9Be,n)20Ne1— (0)— (0)— (0)114 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,t)18F1— (0)— (0)— (0)111 MeV – 15 MeV— (0)— (0)— (0)— (0)— (0)
12C(9Be,tcc)11520 MeV— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)
12C(9Be,x)1— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)16.9 MeV – 17 MeV
15N(6Li,el)1— (0)— (0)— (0)125 MeV— (0)— (0)— (0)— (0)— (0)
17O(α,tot)1— (0)— (0)— (0)— (0)— (0)— (0)11.8 MeV – 4 MeV— (0)— (0)
20Ne(n,2α)1— (0)— (0)114 MeV— (0)— (0)— (0)— (0)— (0)— (0)
20Ne(n,x)1— (0)— (0)— (0)— (0)— (0)— (0)— (0)1— (0)
7Li(14N,6Li)15N1— (0)— (0)— (0)137 MeV— (0)— (0)— (0)— (0)— (0)
9Be(12C,10B)11B1— (0)— (0)— (0)128 MeV— (0)— (0)— (0)— (0)— (0)
9Be(12C,8Be)13C1— (0)— (0)— (0)15.1 MeV – 6.4 MeV— (0)— (0)— (0)— (0)— (0)
9Be(12C,non)1114 MeV – 160 MeV— (0)— (0)— (0)— (0)— (0)— (0)— (0)— (0)

Level scheme

Adopted levels of 21Ne from ENSDF, with the particle thresholds and the Gamow window of the selected channel drawn across them.

Level scheme
7.0097/2+7.023(7/2+)7.044(9/2)+7.1097.1547.2111/2+7.2267.2907.320(1/2+)7.363(7/2,9/2+)7.371(7/2-)7.420(11/2-)7.465(1/2,3/2)-7.5477.6007.6283/2-7.648(7/2+)7.7407.8107.961(11/2-)7.9803/2-7.982(7/2,11/2)+8.0091/2-8.0693/2+8.1463/2+8.155(9/2)+8.1605/2+8.1893/2-8.2248.241(11/2)+Gamow window, T₉ = 0.3S(α) = 7.348 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 17O(α,n)20Ne threshold (S = 7347.9 keV) and the top of the Gamow window at T9 = 0.3 (647 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
7362.7 ± 1.514.77(7/2,9/2+)T½ = < 8 fs…
7370.6 ± 1.722.67(7/2-)–…
7420.3 ± 172.37(11/2-)–…
7465 ± 10117.1(1/2,3/2)-–…
7547 ± 10199.1––…
7600 ± 5252.1––…
7628 ± 10280.13/2-Γ = 14 keV…
7648 ± 2300.1(7/2+)T½ = < 10 fs…
7740 ± 10392.1––…
7810 ± 10462.1––…
7960.9 ± 1.3613(11/2-)–…
7980 ± 10632.13/2-Γ = 6 keV…
7982.1 ± 0.6634.2(7/2,11/2)+–…

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 21Ne (153)
Levels of ²¹Ne
E (keV)JπT½ or Γγ branches
03/2+––
350.7275/2+T½ = 7.13 ps→ 0 (100 %)
1745.917/2+T½ = 52 fs→ 350.73 (95 %), → 0 (4.8 %)
2788.791/2-T½ = 81 ps→ 350.73 (83 %), → 0 (17 %)
2794.171/2+T½ = 5.5 fs→ 0 (100 %)
2866.69/2+T½ = 40 fs→ 1745.9 (61 %), → 350.73 (39 %)
3663.573/2-T½ = 65 fs→ 2794.2 (4.1 %), → 2788.8 (37 %), → 350.73 (59 %)
3735.595/2+T½ = < 10 fs→ 1745.9 (6.6 %), → 350.73 (11 %), → 0 (82 %)
3883.965/2-T½ = 27 fs→ 3663.6 (4.3 %), → 2788.8 (0.43 %), → 350.73 (72 %), → 0 (24 %)
4433.311/2+T½ = 22 fs→ 2866.6 (76 %), → 1745.9 (24 %)
4525.845/2+T½ = < 7 fs→ 1745.9 (3.7 %), → 350.73 (74 %), → 0 (22 %)
4684.533/2+T½ = 11 fs→ 2794.2 (2.3 %), → 350.73 (61 %), → 0 (36 %)
4725.353/2-T½ = 7 fs→ 2794.2 (23 %), → 350.73 (77 %)
4867–––
5334.47/2-T½ = < 7 fs→ 3884 (4.2 %), → 2866.6 (13 %), → 350.73 (83 %)
5431.3(7/2+)T½ = < 8 fs→ 2866.6 (9.4 %), → 1745.9 (19 %), → 350.73 (72 %)
5525–T½ = 69 fsEγ 1746 (100 %)
55493/2+T½ = 28 fs→ 4525.8 (14 %), → 3735.6 (25 %), → 2794.2 (16 %), → 2788.8 (18 %), → 350.73 (6 %), → 0 (21 %)
5630.77/2+T½ = < 7 fs→ 3735.6 (6.3 %), → 1745.9 (14 %), → 350.73 (70 %), → 0 (9.8 %)
5689.811/2-T½ = 5.5 fs→ 4725.4 (6.2 %), → 2794.2 (52 %), → 0 (42 %)
5773(3/2,5/2)T½ = 28 fs→ 350.73 (15 %), → 0 (85 %)
5818.27/2-T½ = < 24 fs→ 4525.8 (5.2 %), → 3884 (32 %), → 3735.6 (12 %), → 3663.6 (3.9 %), → 2866.6 (24 %), → 1745.9 (5.2 %), → 350.73 (17 %)
58223/2+T½ = 55 fs→ 2794.2 (48 %), → 350.73 (52 %)
5992.563/2-T½ = < 7 fs→ 350.73, → 0 (100 %)
6033.39/2-T½ = 19 fs→ 5334.4 (15 %), → 3884 (12 %), → 2866.6 (33 %), → 1745.9 (40 %)
6174.2(5/2)+T½ = 9 fs→ 3735.6 (16 %), → 1745.9 (44 %), → 350.73 (35 %), → 0 (4.8 %)
6263(7/2+)T½ = < 14 fs→ 2866.6, Eγ 5909
62679/2+T½ = 24 fs→ 4433.3 (3.5 %), → 3884 (5.6 %), → 2866.6 (70 %), → 1745.9 (7 %), → 350.73 (14 %)
6271.39/2+–→ 3735.6, → 2866.6 (100 %)
6412.5––→ 2866.6 (100 %)
6448.3(13/2+)T½ = < 14 fs→ 4433.3 (80 %), → 2866.6 (20 %)
6543.5––→ 1745.9 (100 %)
6554.29/2T½ = 31 fs→ 4433.3 (11 %), → 2866.6 (24 %), → 1745.9 (65 %)
6609–T½ = < 7 fs→ 350.73 (95 %), → 0 (4.8 %)
6640.79/2(-)T½ = 15 fs→ 5549 (11 %), → 4433.3 (15 %), → 2866.6 (45 %), → 1745.9 (29 %)
6748.5–T½ = 10 fs→ 3735.6 (19 %), → 350.73 (59 %), → 0 (22 %)
6761.11––→ 5992.6 (0.61 %), → 5689.8 (14 %), → 4725.4 (75 %), → 4684.5 (0.66 %), → 3663.6 (0.34 %), → 2794.2 (0.41 %), → 2788.8 (1 %), → 350.73 (0.52 %), → 0 (7.6 %)
6853–––
6901.161/2-Γ = 3.7 eV–
7008.77/2+T½ = < 12 fs→ 3735.6 (3 %), → 2866.6 (5.9 %), → 1745.9 (53 %), → 350.73 (31 %), → 0 (6.9 %)
7022.8(7/2+)T½ = 13 fs→ 1745.9 (100 %)
7043.9(9/2)+–→ 5431.3 (6.9 %), → 2866.6 (24 %), → 1745.9 (64 %), Eγ 6690 (5.1 %)
7109–––
7154–––
7211.11/2+Γ = 108 keV–
7226–––
7290–––
7320(1/2+)––
7362.7(7/2,9/2+)T½ = < 8 fs→ 2866.6 (35 %), Eγ 5610 (65 %)
7370.6(7/2-)–→ 2866.6 (76 %), → 1745.9 (24 %)
7420.3(11/2-)–→ 5334.4 (3.8 %), → 2866.6 (96 %)
7465(1/2,3/2)-––
7547–––
7600–––
76283/2-Γ = 14 keV–
7648(7/2+)T½ = < 10 fs→ 2866.6 (8.8 %), → 1745.9 (44 %), → 350.73 (26 %), → 0 (21 %)
7740–––
7810–––
7960.9(11/2-)–→ 2866.6 (100 %)
79803/2-Γ = 6 keV–
7982.1(7/2,11/2)+–→ 4433.3 (25 %), → 2866.6 (66 %), → 1745.9 (9.2 %)
80091/2-Γ = 32 keV–
80693/2+Γ = 8 keV–
81463/2+––
8155(9/2)+T½ = < 21 fs→ 6033.3 (7.9 %), → 2866.6 (26 %), → 1745.9 (66 %)
81605/2+––
81893/2-––
8223.7––→ 4433.3 (100 %)
8240.5(11/2)+T½ = < 10 fs→ 4433.3 (48 %), → 2866.6 (52 %)
82645/2-––
82923/2-––
83043/2-Γ = 27 keV–
83613/2+Γ = 10 keV–
8414–––
84383/2-––
84703/2-––
85185/2-Γ = 6 keV–
8522(3/2-)Γ = 6 keV–
85993/2+Γ = 38 keV–
86589/2-––
86643/2-–→ 6033.3 (100 %)
86813/2-Γ = 54 keV–
87745/2+––
87823/2-Γ = 50 keV–
87911/2+––
8801–Γ = < 5 keV–
88393/2+––
8846–Γ = 10 keV–
8860.85/2+Γ = 2.5 keV–
88993/2-––
89295/2+Γ = 5 keV–
8955–––
89813/2+––
8993–Γ = 2.5 keV–
9061–––
90995/2+––
91381/2+––
9150.61/2+Γ = 7.6 keV–
9188–––
92033/2-Γ = 10 keV–
92325/2+––
9251–––
9267–Γ = 15 keV–
9299–Γ = 10 keV–
9368–Γ = 30 keV–
9401(13/2-)–→ 7420.3 (24 %), → 6033.3 (65 %), → 4433.3 (11 %)
9457–Γ = 35 keV–
9509–Γ = 45 keV–
9516–Γ = 20 keV–
9647–Γ = 30 keV–
9673–Γ = 5 keV–
9696–Γ = 10 keV–
9700(13/2+)–→ 4433.3 (100 %)
9724–Γ = 10 keV–
9796–Γ = 10 keV–
98343/2-Γ = 50 keV–
9857(15/2+)–→ 6448.3 (44 %), → 6033.3 (56 %)
98943/2-Γ = 48 keV–
9932–Γ = 15 keV–
9941––→ 6448.3 (100 %)
9961.8(1/2,3/2)-––
10043–––
10076–Γ = 5 keV–
10112–Γ = 40 keV–
10188–Γ = 20 keV–
10294–Γ = 73 keV–
10344–Γ = 5 keV–
10384–Γ = 45 keV–
10447–Γ = 55 keV–
10542–––
10619–Γ = 65 keV–
10633.73/2+Γ = 1 keV–
10658.5–Γ = 600 eV–
10718–Γ = 40 keV–
10844–Γ = 20 keV–
10877–Γ = 30 keV–
10915.63/2-Γ = 9.8 keV–
11095–––
11283.2–Γ = 18.7 keV–
11380–––
11453–––
11591–––
11642–––
11704–––
11874–––
11983.6(15/2-)–→ 6448.3 (100 %)
12204–––
12315–Γ = 7 keV–
12454.7–Γ = 7.7 keV–
12563–––
12950–Γ = 33 keV–
13806(3/2-)Γ = 24 keV–
16065(3/2-)Γ = 55 keV–