ADOPTED LEVELS, GAMMAS for 77Ge
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 30-SEP-2020
Authors: Balraj Singh, Ninel Nica | Citation: Nucl. Data Sheets 113, 1115 (2012) | Cutoff date: 30-Mar-2012
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=2703.5 keV 17 | S(n)= 6071.29 keV 5 | S(p)= 12205.2 keV 20 | Q(α)= -8044.4 keV 19 | ||
| Reference: 2017WA10 |
| References: | |||
| A | 77Ga β- decay (13.2 S) | B | 77Ge IT decay (53.7 S) |
| C | 76Ge(n,γ) E=THERMAL | D | 76Ge(n,n),(n,γ):Resonances |
| E | 76Ge(pol d,p),(d,p) | F | 76Ge(α,3He) |
| G | 76Ge(13C,12CG) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABC E G | 7/2+ | 11.211 h 3 % β- = 100 | |||||
| 159.71 6 | ABC EFG | 1/2- | 53.7 s 6 % IT = 19 2 % β- = 81 2 | 159.66 10 | 100 | (E3) | 0.0 | 7/2+ |
| 224.96 7 | C EFG | 9/2+ | 224.89 10 | 100 | (M1+E2) | 0.0 | 7/2+ | |
| 421.39 6 | A C E G | 5/2+ | 421.37 10 | 100 | (M1+E2) | 0.0 | 7/2+ | |
| 492.05 6 | C EFG | 5/2- | 332.34 10 492.0 1 | 8 2 100 7 | (E1) | 159.71 0.0 | 1/2- 7/2+ | |
| 504.76 6 | C E G | 5/2+ | 83.5 1 279.78 10 504.79 10 | 37.0 14 4.8 5 100 4 | (M1+E2) | 421.39 224.96 0.0 | 5/2+ 9/2+ 7/2+ | |
| 618.86 6 | A C G | (3/2+) | 114.0 2 126.84 13 197.47 10 459.18 10 618.89 10 | 0.44 9 1.15 16 15 5 100 5 19 6 | D | 504.76 492.05 421.39 159.71 0.0 | 5/2+ 5/2- 5/2+ 1/2- 7/2+ | |
| 629.68 7 | A C E G | 3/2- | 469.99 10 | 100 | (M1+E2) | 159.71 | 1/2- | |
| 760.53 6 | C G | 7/2(+) | 255.7 1 535.54 10 760.6 1 | 56 6 100 6 34 5 | D(+Q) (M1+E2) (M1+E2) | 504.76 224.96 0.0 | 5/2+ 9/2+ 7/2+ | |
| 809.09 17 | G | 809.1 2 | 100 | 0.0 | 7/2+ | |||
| 884.19 9 | C E G | 5/2+ | 884.24 10 | 100 | (M1+E2) | 0.0 | 7/2+ | |
| 910.61 9 | C G | (5/2+,7/2+) | 291.80 16 418.5 1 685.6 2 | 34 5 100 10 45 6 | 618.86 492.05 224.96 | (3/2+) 5/2- 9/2+ | ||
| 1021.58 6 | A C E G | 3/2- | 392.01 10 402.63 10 861.88 10 | 15.2 6 7.9 3 100 4 | (M1+E2) | 629.68 618.86 159.71 | 3/2- (3/2+) 1/2- | |
| 1048.05 8 | A C | (1/2,3/2) | 429.10 14 888.34 15 | 4.3 3 100 4 | 618.86 159.71 | (3/2+) 1/2- | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 1052.73 8 | C E G | 1/2-,3/2- | 423.00 11 560.9 2 | 91 35 100 5 | 629.68 492.05 | 3/2- 5/2- | ||
| 1110.68 17 | EFG | 301.6 2 885.7 2 | 9 4 100 19 | 809.09 224.96 | 9/2+ | |||
| 1189 10 ? | E | (7/2+,9/2+) | ||||||
| 1247.00 8 | C E G | 1/2+ | 825.68 13 1087.26 10 | 35.9 24 100 4 | 421.39 159.71 | 5/2+ 1/2- | ||
| 1275.41 13 | G | 364.6 2 656.6 2 783.5 2 | 27 6 50 35 100 50 | 910.61 618.86 492.05 | (5/2+,7/2+) (3/2+) 5/2- | |||
| 1286.53 13 | G | 657.1 2 667.6 2 794.3 2 | 100 44 56 31 73 13 | 629.68 618.86 492.05 | 3/2- (3/2+) 5/2- | |||
| 1344.67 21 | G | 839.9 2 | 100 | 504.76 | 5/2+ | |||
| 1359.08 13 | A C G | (1/2,3/2,5/2) | 729.1 2 740.38 15 | 39 8 100 5 | 629.68 618.86 | 3/2- (3/2+) | ||
| 1385.28 6 | C EFG | 5/2+ | 363.7 1 624.71 10 755.56 12 766.52 10 880.37 17 893.23 10 963.90 10 1385.0? | 0.18 8 100 7 77 6 44 3 92 7 13.3 17 28 3 | (M1+E2) (M1+E2) | 1021.58 760.53 629.68 618.86 504.76 492.05 421.39 0.0 | 3/2- 7/2(+) 3/2- (3/2+) 5/2+ 5/2- 5/2+ 7/2+ | |
| 1408.46 21 | G | 916.4 2 | 100 | 492.05 | 5/2- | |||
| 1535.28 10 | C E | 1/2+ | 487.24 10 1113.64 18 | 11 5 100 30 | 1048.05 421.39 | (1/2,3/2) 5/2+ | ||
| 1610 10 | E | |||||||
| 1663.76 8 | A C EF | (1/2+,3/2) | 642.19 12 1242.24 18 1504.05 12 | 17 8 100 17 37.5 25 | 1021.58 421.39 159.71 | 3/2- 5/2+ 1/2- | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 1775.34 9 | C E | 1/2+ | 1145.53 18 1353.94 10 | 28.0 17 100 4 | 629.68 421.39 | 3/2- 5/2+ | ||
| 1804 10 | E | 3/2+ | ||||||
| 1834.96 10 | C | (1/2,3/2) | 1216.06 12 | 100 | 618.86 | (3/2+) | ||
| 1836.08 21 | E G | (1/2+) | 450.8 2 | 100 | 1385.28 | 5/2+ | ||
| 1879.25 8 | C E | (1/2+,3/2) | 831.22 10 1249.43 18 1457.84 10 1719.6 3 | 64 3 62 3 100 4 6 3 | 1048.05 629.68 421.39 159.71 | (1/2,3/2) 3/2- 5/2+ 1/2- | ||
| 1901.09 12 | C | (1/2,3/2) | 1741.35 11 | 100 | 159.71 | 1/2- | ||
| 1951.79 11 | C EF | (3/2+) | 1067.66 11 1446.87 16 | 97 12 100 12 | 884.19 504.76 | 5/2+ 5/2+ | ||
| 2063.28 8 | C E | (3/2) | 1558.48 10 1571.09 15 1641.85 23 1903.55 18 | 100 4 5.4 4 62.8 23 35 12 | 504.76 492.05 421.39 159.71 | 5/2+ 5/2- 5/2+ 1/2- | ||
| 2088 10 | EF | (7/2+,9/2+) | ||||||
| 2118.81 10 | C E | (3/2+) | 1697.40 12 | 100 | 421.39 | 5/2+ | ||
| 2178.12 12 | C | (1/2+,3/2) | 1673.22 15 1756.9 4 | 80 13 100 28 | 504.76 421.39 | 5/2+ 5/2+ | ||
| 2195.22 8 | C | (1/2,3/2) | 1142.45 11 1146.95 18 1173.68 12 2035.48 13 | 70 3 100 9 79 5 76 7 | 1052.73 1048.05 1021.58 159.71 | 1/2-,3/2- (1/2,3/2) 3/2- 1/2- | ||
| 2260 10 | E | |||||||
| 2305 10 | E | (3/2+,5/2+) | ||||||
| 2368.38 11 | C | (1/2,3/2) | 1315.59 11 2208.76 23 | 100 4 75 19 | 1052.73 159.71 | 1/2-,3/2- 1/2- | ||
| 2442 10 | E | (3/2+,5/2+) | ||||||
| 2479 10 | E | (1/2+) | ||||||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 2506.82 10 | C E | (1/2,3/2) | 1877.02 11 | 100 | 629.68 | 3/2- | ||
| 2556 10 | E | |||||||
| 2783 10 | E | |||||||
| 2814.31 13 | A C | (1/2:7/2-) | 2184.60 11 | 100 | 629.68 | 3/2- | ||
| 2873 10 | E | (1/2+) | ||||||
| 2929 10 | E | |||||||
| 2960 10 | E | (1/2+) | ||||||
| 2998 10 | E | |||||||
| 3090 15 | E | |||||||
| 3135 10 | E | |||||||
| 3147 10 | E | |||||||
| 3242 10 | E | (3/2+,5/2+) | ||||||
| 3257 10 | E | (1/2+) | ||||||
| 3287.2 10 ? | C | (1/2+,3/2) | 2782.91 11 | 100 | 504.76 | 5/2+ | ||
| 3364 15 | E | (3/2+,5/2+) | ||||||
| 3388 15 | E | |||||||
| 3443 15 | E | |||||||
| 3496 15 | E | |||||||
| 3547 15 | E | |||||||
| 6071.44 6 S | C | 1/2+ | 2785.11 15 3564.44 11 3702.92 15 3875.97 15 3893.12 15 3952.53 11 4007.96 10 4119.53 24 4170.2 3 4192.00 20 4236.33 11 4295.92 11 4407.53 11 4535.81 18 4824.31 11 5018.75 16 5049.69 10 5442.06 18 5649.71 11 5911.33 10 | 1.30 14 2.62 11 4.4 11 4.72 22 6.8 3 1.25 7 21.0 15 1.90 9 0.54 10 38.5 12 4.14 21 7.0 10 2.45 21 3.9 9 5.6 3 0.53 4 56.0 23 0.30 7 1.94 9 100.0 | 3287.2 2506.82 2368.38 2195.22 2178.12 2118.81 2063.28 1951.79 1901.09 1879.25 1834.96 1775.34 1663.76 1535.28 1247.00 1052.73 1021.58 629.68 421.39 159.71 | (1/2+,3/2) (1/2,3/2) (1/2,3/2) (1/2,3/2) (1/2+,3/2) (3/2+) (3/2) (3/2+) (1/2,3/2) (1/2+,3/2) (1/2,3/2) 1/2+ (1/2+,3/2) 1/2+ 1/2+ 1/2-,3/2- 3/2- 3/2- 5/2+ 1/2- | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 6071.83 5 | D | 1/2+ | ||||||
| 6076.11 5 | D | 1/2+ | ||||||
| 6077.39 5 | D | 1/2+ | ||||||
| 6085.28 5 | D | 1/2+ | ||||||
| 6086.22 5 | D | 1/2+ | ||||||
| 6092.08 5 | D | 1/2+ | ||||||
| 6093.70 5 | D | 1/2+ | ||||||
| 6100.50 6 | D | 1/2+ | ||||||
| 6119.0 6 | D | 1/2+ | ||||||
E(level): From least-squares fit to Eγ data for levels populated in γ-ray studies. Others are from (α,3He) and (d,p)
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
| 159.71 | 1/2- | 53.7 s 6 % IT = 19 2 % β- = 81 2 | 159.66 10 | (E3) | 0.837 | B(E3)(W.u.)=0.0025 3, α=0.837, α(K)=0.710 11, α(L)=0.1101 16, α(M)=0.01631 24, α(N)=0.000756 11 | |
| 421.39 | 5/2+ | 421.37 10 | (M1+E2) | -0.10 | |||
| 760.53 | 7/2(+) | 255.7 1 | D(+Q) | 0.0 AP | |||
| 7/2(+) | 535.54 10 | (M1+E2) | +0.2 | ||||
| 7/2(+) | 760.6 1 | (M1+E2) | -0.55 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 421.39 | 5/2+ | XREF: α(?)E(428). | |
| 492.05 | 5/2- | XREF: E(?). | |
| 504.76 | 5/2+ | XREF: E(510). | |
| 1110.68 | XREF: F(1100). | ||
| 1385.28 | 5/2+ | There is severe disagreement in gamma-ray branching ratios between the values given here from (n,γ) (2012Me04) and those from 76Ge(13C,12Cγ) (2009Ka22). For example Iγ(893)/Iγ(880)=1.75 in (n,γ) whereas it is 0.144 in (13C,12Cγ). The evaluators adopt branching ratios from the latter work due to better statistics and γγ coin data using the Gammasphere array. E(level): There is severe disagreement in gamma-ray branching ratios between the values given here from (n,γ) (2012Me04) and those from 76Ge(13C,12Cγ) (2009Ka22). For example Iγ(893)/Iγ(880)=1.75 in (n,γ) whereas it is 0.144 in (13C,12Cγ). The evaluators adopt branching ratios from the latter work due to better statistics and γγ coin data using the Gammasphere array. | |
| 1663.76 | (1/2+,3/2) | XREF: E(1655). | |
| 6071.83 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6076.11 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6077.39 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6085.28 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6086.22 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6092.08 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6093.70 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6100.50 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). | |
| 6119.0 | 1/2+ | Jπ(level): s-wave resonance in (n,n),(n,γ). |
| E(level) | E(gamma) | Comments |
| 159.71 | 159.66 | E(γ): from weighted average of values from (n,γ) E=thermal, 76Ge IT decay and 76Ge(13C,12Cγ). M(γ): ce data in 77Ge IT decay give E3 or M3; however, ΔJπ consistent with E3 |
| 618.86 | 114.0 | E(γ): γ not in (n,γ) | 197.47 | I(γ): unweighted average of 9.5 5 and 19.7 24 | 618.89 | I(γ): unweighted average of 12.4 11 and 25 6 |
| 910.61 | 685.6 | E(γ): γ not in (n,γ) |
| 1052.73 | 560.9 | E(γ): γ in (13C,12Cγ); not in (n,γ) |
| 1359.08 | 729.1 | E(γ): γ from (13C,12Cγ); not reported in (n,γ) and β- decay |
| 1385.28 | 363.7 | E(γ): γ in (13C,12Cγ); not in (n,γ) |
| 3287.2 | 2782.91 | E(γ): level-energy difference=2782.40. Ordering of the 2785.11-2782.91 cascade is not established. |
| 6071.44 | 2785.11 | E(γ): level-energy difference=2784.17. Ordering of the 2785.11-2782.91 cascade is not established. |
1939Sa02, 1941Se03: 77Ge isotope identified and produced in bombardment of Ge by deuterons and Se by slow and fast neutrons, and subsequent counting of β spectra
Theoretical calculations: consult the NSR database at www.nndc.bnl.gov for 11 primary theory references dealing with nuclear structure calculations.
Q-value: S(2n)=15498.53 7, S(2p)=23231.9 20 (2017Wa10)