ADOPTED LEVELS, GAMMAS for 87Zr
Authors: T.D. Johnson and W.D. Kulp | Citation: Nucl. Data Sheets 129, 1 (2015) | Cutoff date: 27-Jul-2015
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-5473 keV 8 | S(n)= 9449 keV 6 | S(p)= 7352 keV 15 | Q(α)= -4974 keV 8 | ||
Reference: 2012WA38 |
References: | |||
A | (HI,xnγ) | B | 87Nb β+ decay (2.6 M) |
C | 87Nb β+ decay (3.75 M) | D | 87Zr IT decay (14.0 S) |
E | 90Zr(3He,6He) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABCDE | 9/2+ | 1.68 h 1 % ε = 100 | |||||
200.91 12 | ABCDE | 7/2+ | 2.44 ns 10 | 201.02 14 | 100 | M1+E2 | 0.0 | 9/2+ |
335.84 19 | A CDE | 1/2- | 14.0 s 2 % IT = 100 | 134.93 15 | 100 | E3 | 200.91 | 7/2+ |
470.63 12 | AB | (7/2+) | 470.63 12 | 100 | (D+Q) | 0.0 | 9/2+ | |
523.7 23 | B | 322.8 23 | 100 | 200.91 | 7/2+ | |||
589.3 17 | B | 388.7 23 | 100 | 200.91 | 7/2+ | |||
801.50 15 | AB | (7/2) | 600.9 2 801.2 2 | 100 16 42 13 | (D) | 200.91 0.0 | 7/2+ 9/2+ | |
817.45 22 | B E | 616.5 2 | 100 | 200.91 | 7/2+ | |||
931.53 24 | A | 460.9 2 | 100 | 470.63 | (7/2+) | |||
1061 15 | E | |||||||
1069.42 19 | A | (13/2)+ | < 49 ps | 1069.4 2 | 100 | E2 | 0.0 | 9/2+ |
1087.37 15 | AB | (9/2) | 886.4 2 1087.4 2 | 100 17 | 200.91 0.0 | 7/2+ 9/2+ | ||
1124.88 20 | A | (11/2+) | 1124.9 2 | 100 | D+Q | 0.0 | 9/2+ | |
1284.0 23 | B | 466.5 23 | 100 | 817.45 | ||||
1287.5 23 | B | 470.0 23 | 100 | 817.45 | ||||
1505.5 23 | B | 1304.6 23 | 100 | 200.91 | 7/2+ | |||
1656.9 3 | A | (11/2+) | 569 1 1456 1 1657 1 | 75 50 100 | (E2) (M1+E2) | 1087.37 200.91 0.0 | (9/2) 7/2+ 9/2+ | |
1669 4 | B | 381.3 23 | 100 | 1287.5 | ||||
1691.3 3 | A | (13/2) | 567 621.9 2 | 100 75 | (D) | 1124.88 1069.42 | (11/2+) (13/2)+ | |
1749 4 | B | 461.7 23 | 100 | 1287.5 | ||||
1884.4 3 | B | (7/2+,9/2+,11/2+) | 797.0 23 1066.8 3 1083.0 7 1295.4 23 1683.6 7 1884.5 7 | 14 100 11 6 3 5 41 4 89 8 | 1087.37 817.45 801.50 589.3 200.91 0.0 | (9/2) (7/2) 7/2+ 9/2+ | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
1911 4 | B | 242.4 23 | 100 | 1669 | ||||
1919.6 23 | B | 1718.7 23 | 100 | 200.91 | 7/2+ | |||
1949 3 | B | 1360.1 23 | 100 | 589.3 | ||||
2059.2 23 | B | 1858.3 23 | 100 | 200.91 | 7/2+ | |||
2069.3 23 | B | 1868.4 23 | 100 | 200.91 | 7/2+ | |||
2073.72 25 | A | (13/2-) | 2.97 ns 20 | 416.8 2 949.0 1004.3 2 | 79 16 100 | D [D] (D) | 1656.9 1124.88 1069.42 | (11/2+) (11/2+) (13/2)+ |
2125 15 | E | |||||||
2201.9 3 | A | (17/2)+ | < 35 ps | 1132.5 2 | 100 | E2 | 1069.42 | (13/2)+ |
2245.3 23 | B | 2044.4 23 | 100 | 200.91 | 7/2+ | |||
2287 15 | E | |||||||
2312.5 4 | A | (17/2-) | 2.74 ns 9 | 110.6 10 238.8 2 | 58 100 | (D) E2 | 2201.9 2073.72 | (17/2)+ (13/2-) |
2354.3 7 | B | 2153.4 7 | 100 | 200.91 | 7/2+ | |||
2467.1 4 | A | (17/2-) | 11 ps 3 | 154.7 2 | 100 | (M1+E2) | 2312.5 | (17/2-) |
2598.2 23 | B | 2397.3 23 | 100 | 200.91 | 7/2+ | |||
2894.1 | A | (21/2)+ | 71 ps 7 | 692.2 | 100 | E2 | 2201.9 | (17/2)+ |
2986.1 4 | A | (19/2-) | 521.9 675.8 2 | 30 100 | (D) (D) | 2467.1 2312.5 | (17/2-) (17/2-) | |
3053.3 23 | B | 2852.3 23 | 100 | 200.91 | 7/2+ | |||
3236.8 | A | (19/2-) | 3.0 ps 6 | 924.8 | 100 | (M1+E2) | 2312.5 | (17/2-) |
3365.9 8 | A | (21/2-) | < 3 ps | 129.7 378.2 900.0 | 88 100 | (D+Q) (D+Q) (E2) | 3236.8 2986.1 2467.1 | (19/2-) (19/2-) (17/2-) |
3380.4 15 | A | (23/2) | < 0.2 ps | 486.4 | 100 | 2894.1 | (21/2)+ | |
3447.0 23 | B | 3246.0 23 | | 200.91 | 7/2+ | |||
3942.7 | A | (25/2) | 0.15 ps 5 | 562.4 1048.5 | 100 | (D) | 3380.4 2894.1 | (23/2) (21/2)+ |
4056.8 | A | (25/2+) | 1162.7 | 100 | 2894.1 | (21/2)+ | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
4128.7 | A | (25/2) | 0.80 ps 20 | 748.4 | 100 | (D) | 3380.4 | (23/2) |
4333.1 | A | (25/2-) | 6.9 ps 14 | 967.2 | 100 | (E2) | 3365.9 | (21/2-) |
4530.2 | A | (27/2) | 0.44 ps 10 | 401.8 587.3 1149.7 | 33 100 | (D) | 4128.7 3942.7 3380.4 | (25/2) (25/2) (23/2) |
4618.6 | A | (27/2-) | 285.6 | 100 | 4333.1 | (25/2-) | ||
5054.8 | A | (29/2+) | 524.5 1112.3 | | 4530.2 3942.7 | (27/2) (25/2) | ||
5074.3 16 | A | (27/2-) | 0.5 ps 2 | 741.0 | 100 | (D) | 4333.1 | (25/2-) |
5507.6 | A | (29/2+) | 977.4 1378.7 | | 4530.2 4128.7 | (27/2) (25/2) | ||
5529.3 | A | (29/2-) | 455.0 910.8 1196.1 | | 5074.3 4618.6 4333.1 | (27/2-) (27/2-) (25/2-) | ||
5689.9 | A | (29/2-) | 615.6 | 100 | 5074.3 | (27/2-) | ||
5803.2 | A | (31/2+) | 295.4 1273.0 | | 5507.6 4530.2 | (29/2+) (27/2) | ||
6212.6 | A | (31/2-) | 683.4 | 100 | 5529.3 | (29/2-) | ||
6234.3 | A | (33/2+) | 431.0 1179.5 | | 5803.2 5054.8 | (31/2+) (29/2+) | ||
6268.8 | A | (31/2-) | 578.8 | 100 | 5689.9 | (29/2-) | ||
6573.7 | A | (35/2+) | 339.3 | 100 | 6234.3 | (33/2+) | ||
6840.1 | A | (33/2-) | 627.5 | 100 | 6212.6 | (31/2-) | ||
7451.9 | A | (35/2-) | 611.9 1183.0 | | 6840.1 6268.8 | (33/2-) (31/2-) | ||
7476.8 | A | (37/2+) | 903.0 1242.7 | | 6573.7 6234.3 | (35/2+) (33/2+) | ||
8777.6 | A | (39/2-) | 1325.7 | 100 | 7451.9 | (35/2-) | ||
10091.6 | A | (43/2+) | 1314.0 | 100 | 8777.6 | (39/2-) |
E(level): From least-squares fit to γ-ray energies.
Jπ(level): From (HI,xnγ), unless indicated otherwise. Based on excitation functions, γ(θ), and, for quadrupole transitions, RUL
T1/2(level): From (HI,xnγ) using Doppler shift attenutation, or recoil distance techniques
M(γ): From (HI,xnγ) and adopted parities, unless indicated otherwise.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
200.91 | 7/2+ | 2.44 ns 10 | 201.02 14 | M1+E2 | -0.35 | 0.0370 | B(E2)(W.u.)=3.25 14, B(M1)(W.u.)=0.00095 4, α=0.0370, α(K)=0.0324 5, α(L)=0.00387 6, α(M)=0.000673 10, α(N)=9.43E-5 14, α(O)=6.19E-6 9 |
335.84 | 1/2- | 14.0 s 2 % IT = 100 | 134.93 15 | E3 | 2.67 | B(E3)(W.u.)=0.0646 13, α=2.67, α(K)=1.98 3, α(L)=0.571 9, α(M)=0.1020 16, α(N)=0.01292 20, α(O)=0.000314 5 | |
1069.42 | (13/2)+ | < 49 ps | 1069.4 2 | E2 | 5.76×10-4 | B(E2)(W.u.)>0.36, α=5.76E-4, α(K)=0.000508 8, α(L)=5.63E-5 8, α(M)=9.76E-6 14, α(N)=1.385E-6 20, α(O)=9.70E-8 14 | |
1656.9 | (11/2+) | 1456 1 | (E2) | 3.67×10-4 | α=3.67×10-4, α(K)=0.000264 4, α(L)=2.89E-5 4, α(M)=5.01E-6 7, α(N)=7.12E-7 10, α(O)=5.05E-8 8 | ||
(11/2+) | 1657 1 | (M1+E2) | 3.68×10-4 | α=3.68×10-4, α(K)=0.000210 4, α(L)=2.28E-5 4, α(M)=3.95E-6 6, α(N)=5.63E-7 9, α(O)=4.04E-8 7 | |||
2201.9 | (17/2)+ | < 35 ps | 1132.5 2 | E2 | 5.09×10-4 | B(E2)(W.u.)>0.38, α=5.09E-4, α(K)=0.000448 7, α(L)=4.95E-5 7, α(M)=8.58E-6 12, α(N)=1.217E-6 17, α(O)=8.54E-8 12 | |
2312.5 | (17/2-) | 2.74 ns 9 | 238.8 2 | E2 | 0.0478 | B(E2)(W.u.)=7.0 3, α=0.0478, α(K)=0.0414 6, α(L)=0.00534 8, α(M)=0.000929 14, α(N)=0.0001276 19, α(O)=7.37E-6 11 | |
2467.1 | (17/2-) | 11 ps 3 | 154.7 2 | (M1+E2) | 0.5 25 | 0.09 | α=0.09 12, α(K)=0.08 10, α(L)=0.011 16, α(M)=0.002 3, α(N)=0.0003 4, α(O)=1.5×10-5 16 |
2894.1 | (21/2)+ | 71 ps 7 | 692.2 | E2 | 1.67×10-3 | B(E2)(W.u.)=2.19 22, α=1.67E-3, α(K)=0.001469 21, α(L)=0.0001670 24, α(M)=2.90E-5 4, α(N)=4.09E-6 6, α(O)=2.78E-7 4 | |
3236.8 | (19/2-) | 3.0 ps 6 | 924.8 | (M1+E2) | 0.50 25 | 7.98×10-4 | B(E2)(W.u.)=(2.4 20), B(M1)(W.u.)=(0.0074 21), α=7.98E-4, α(K)=0.000705 10, α(L)=7.76E-5 12, α(M)=1.345E-5 20, α(N)=1.91E-6 3, α(O)=1.359E-7 19 |
3365.9 | (21/2-) | < 3 ps | 900.0 | (E2) | 8.60×10-4 | B(E2)(W.u.)>7.4, α=8.60E-4, α(K)=0.000758 11, α(L)=8.47E-5 12, α(M)=1.469E-5 21, α(N)=2.08E-6 3, α(O)=1.442E-7 21 | |
4333.1 | (25/2-) | 6.9 ps 14 | 967.2 | (E2) | 7.25×10-4 | B(E2)(W.u.)=4.2 9, α=7.25E-4, α(K)=0.000640 9, α(L)=7.12E-5 10, α(M)=1.235E-5 18, α(N)=1.749E-6 25, α(O)=1.218E-7 17 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 9/2+ | 1.68 h 1 % ε = 100 | Q=+0.423 48 (2002Fo12,2003Th03), μ=-0.895 9 The 9/2, as opposed to 7/2, spin assignment is consistent with the larger quadrupole moment. See 2002Fo12 for more detail. E(level): The 9/2, as opposed to 7/2, spin assignment is consistent with the larger quadrupole moment. See 2002Fo12 for more detail. |
E(level) | E(gamma) | Comments |
200.91 | 201.02 | E(γ): Weighted average from (HI,xnγ) and ε+β+ decay (2.6 m). |
335.84 | 134.93 | E(γ): Weighted average from (HI,xnγ) and ε+β+ decay (2.6 m). M(γ): from α(exp) deduced in isomeric decay. |
470.63 | 470.63 | E(γ): Weighted average from (HI,xnγ) and ε+β+ decay (2.6 m). |
801.50 | 600.9 | I(γ): From ε+β+ decay (2.6 m). | 801.2 | I(γ): From ε+β+ decay (2.6 m). |
817.45 | 616.5 | E(γ): From ε+β+ decay (2.6 m). |
1087.37 | 886.4 | E(γ): From ε+β+ decay (2.6 m). |
1284.0 | 466.5 | E(γ): From ε+β+ decay (2.6 m). |
1287.5 | 470.0 | E(γ): From ε+β+ decay (2.6 m). |
1505.5 | 1304.6 | E(γ): From ε+β+ decay (2.6 m). |
1669 | 381.3 | E(γ): From ε+β+ decay (2.6 m). |
1749 | 461.7 | E(γ): From ε+β+ decay (2.6 m). |
1884.4 | 797.0 | E(γ): From ε+β+ decay (2.6 m). | 1066.8 | E(γ): From ε+β+ decay (2.6 m). | 1083.0 | E(γ): From ε+β+ decay (2.6 m). | 1295.4 | E(γ): From ε+β+ decay (2.6 m). | 1683.6 | E(γ): From ε+β+ decay (2.6 m). | 1884.5 | E(γ): From ε+β+ decay (2.6 m). |
1911 | 242.4 | E(γ): From ε+β+ decay (2.6 m). |
1919.6 | 1718.7 | E(γ): From ε+β+ decay (2.6 m). |
1949 | 1360.1 | E(γ): From ε+β+ decay (2.6 m). |
2059.2 | 1858.3 | E(γ): From ε+β+ decay (2.6 m). |
2069.3 | 1868.4 | E(γ): From ε+β+ decay (2.6 m). |
2245.3 | 2044.4 | E(γ): From ε+β+ decay (2.6 m). |
2354.3 | 2153.4 | E(γ): From ε+β+ decay (2.6 m). |
E(level) | E(gamma) | Comments |
2598.2 | 2397.3 | E(γ): From ε+β+ decay (2.6 m). |
3053.3 | 2852.3 | E(γ): From ε+β+ decay (2.6 m). |
For model calculations of level energies and configurations, see 1985Ox01.
; Systematics of 1-qp configurations, 2010Ro27
Other recent theory and calcuations:2010Ro27,2006Es02
Q-value: Q(β-n)=-18285 7, Q(εcp)=-2112 4
Q-value: Mass excess from 2008We10: -79341.4 53 keV, from 2012Ka13: -79343.9 50 keV, using 97Mo as reference (jyfltrap)