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Nuclear data explorer · compound nucleus

94Zr

94Zr is formed when 93Zr + 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 94Zr: entrance pair (rows) and the quantities measured (columns), with the energies covered.

Every EXFOR reaction that forms ⁹⁴Zr: entrance pair (rows) and the quantities measured (columns), with the energies covered.
ReactionDatasetsσωγMACSotherFitted in evaluation
93Zr(n,γ)94Zr17325 meV – 7.4 MeV565 keV – 30 keV3490 meV – 7.4 MeV

Level scheme

Adopted levels of 94Zr from ENSDF, with the particle thresholds and the Gamow window of the selected channel drawn across them.

Level scheme
7.792(16)8.981Gamow window, T₉ = 0.09S(n) = 8.219 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 93Zr(n,γ)94Zr threshold (S = 8218.6 keV) and the top of the Gamow window at T9 = 0.09 (50 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 94Zr (67)
Levels of ⁹⁴Zr
E (keV)JπT½ or Γγ branches
00+––
918.752+T½ = 6.9 ps→ 0 (100 %)
1300.190+T½ = 291 ps→ 918.75 (100 %), → 0
1469.624+T½ = 500 ps→ 918.75 (100 %)
1671.412+–→ 918.75 (58 %), → 0 (42 %)
2057.633-–→ 1469.6 (2.7 %), → 918.75 (97 %)
2151.312+–→ 918.75 (100 %)
2329.94+–→ 1469.6, → 918.75 (100 %)
2366.122+–→ 2057.6 (9.4 %), → 1671.4 (51 %), → 1300.2 (6.2 %), → 918.75 (33 %)
2401–––
2507.7(3)+–→ 1671.4 (13 %), → 918.75 (87 %)
26055-–→ 1469.6 (100 %)
2698.5(1,2,3)–→ 918.75 (100 %)
2719–––
2769–––
2826(2,3)–→ 1671.4 (100 %)
2846.3(1-)–→ 918.75 (9.9 %), → 0 (90 %)
2860.64+–→ 1469.6 (100 %)
2888.24+–→ 918.75 (100 %)
2908.05(2+)–→ 1671.4 (61 %), → 918.75 (18 %), → 0 (21 %)
2925(1-,3-,4+)––
29455-–→ 2057.6 (100 %)
3014–––
3030–––
3059.31(1,2,3)+–→ 2057.6 (6.1 %), → 1671.4, → 918.75 (94 %)
3142.4(6+)–→ 2605 (15 %), → 2329.9 (82 %), → 1469.6 (3.1 %)
3156.4(4+)–→ 2507.7, → 918.75
3219.42(1,2,3)–→ 2057.6 (79 %), → 1469.6, → 918.75 (21 %)
3281(2+)––
3316–––
3331(5-)––
3361.16(1,2,3)–→ 2057.6 (8.1 %), → 1469.6 (68 %), → 918.75 (24 %)
3407(3-,4+)––
3442.5(7-)–→ 2605 (100 %)
3482–––
3560(4+)––
3594.8––→ 3442.5 (100 %)
3598(5-)––
3631.6(8+)–→ 3142.4 (100 %)
3686–––
3724.9(2,3,4)+–→ 1469.6 (50 %), → 918.75 (50 %)
3776(0+)––
3840–––
3884–––
3897(4+)––
3961.8(2)+–→ 2057.6 (12 %), → 1469.6 (78 %), → 1300.2 (10 %)
4002.2(1,2)+–→ 0 (100 %)
4052.4(1,2)+–→ 0 (100 %)
4081(3-)––
4098.5(1,2)+–→ 0 (100 %)
4149(7-)––
4198.8(1,2)+–→ 1671.4 (67 %), → 1300.2 (33 %)
4224.2––→ 3594.8, → 3442.5
4237.6(1,2,3)+–→ 1671.4 (56 %), → 918.75 (44 %)
4340(4+)––
4369.8––→ 4224.2 (24 %), → 3442.5 (76 %)
4479.3(10+)–→ 3631.6 (100 %)
4637.9(1,2,3)+–→ 1671.4 (56 %), → 918.75 (44 %)
4669.8(1-,2-,3-)–→ 1671.4 (59 %), → 918.75 (41 %)
4812.4(12+)–→ 4479.3 (100 %)
5490.9(11+)–→ 4479.3 (100 %)
5804.5(12+)–→ 5490.9 (100 %)
6006.8(13+)–→ 5804.5 (52 %), → 4812.4 (48 %)
6371.7(14)–→ 6006.8 (100 %)
7055(15)–→ 6371.7 (100 %)
7791.8(16)–→ 7055 (100 %)
8980.6––→ 7791.8 (100 %)