ADOPTED LEVELS, GAMMAS for 64Ge
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 178, 41 (2021). | Cutoff date: 12-Nov-2021
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-14780 keV SY | S(n)= 15470 keV 40 | S(p)= 5057 keV 4 | Q(α)= -2566 keV 4 | ||
Reference: 2021WA16 |
References: | |||
A | 64As ε decay (69.0 MS) | B | 65Se εp decay (34.2 MS) |
C | 12C(54Fe,2nγ),54Fe(12C,2nγ) | D | 40Ca(32S,2αγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | BCD | 0+ | 63.7 s 25 % ε = 100 % εp = ? | |||||
901.7 3 | BCD | 2+ | 2.29 ps 35 | 901.5 3 | 100 | E2 | 0.0 | 0+ |
1578.7 3 | CD | (2+) | 5.5 ps +28-14 | 677.0 3 1579.0 4 | 100 5 16.0 10 | (M1+E2) [E2] | 901.7 0.0 | 2+ 0+ |
2052.6 4 | CD | 4+ | 1150.8 4 | 100 | E2+M3 | 901.7 | 2+ | |
2154.8 4 | C | (4+) | 576.2 3 | 100 | 1578.7 | (2+) | ||
2669.6 5 | CD | (4+) | 1090.9 4 | 100 | 1578.7 | (2+) | ||
2969.7 5 | CD | (3-) | 2067.8 5 2970? | 100 8 ≤5 | [E3] | 901.7 0.0 | 2+ 0+ | |
3406.7 5 | C | (6+) | 1252.1 4 1353.7 5 | 100 5 53 3 | 2154.8 2052.6 | (4+) 4+ | ||
3465.6 6 | C | (6+) | 1413.0 4 | 100 | (Q) | 2052.6 | 4+ | |
3716.9 7 | CD | (5-) | 16.8 ps +24-20 | 747.5 3 1047.3 4 1664.8 4 | 12.9 28 19.8 31 100.0 32 | (E2) (E1) (E1+M2) | 2969.7 2669.6 2052.6 | (3-) (4+) 4+ |
4245.7 6 | CD | (7-) | 29.9 ps +20-17 | 528.4 3 | 100 | E2 | 3716.9 | (5-) |
5025.5 8 | C | 1308.5 5 | 100 | 3716.9 | (5-) | |||
5175.2 7 | C | (8+) | 1768.5 5 | 100 | 3406.7 | (6+) | ||
5180.0 8 | C | (8+) | 1714.4 5 | 100 | 3465.6 | (6+) | ||
5372.9 7 | CD | (9-) | ≤ 2.8 ps | 1127.2 4 | 100 | E2 | 4245.7 | (7-) |
6564.4 8 | C | (11-) | 1191.5 4 | 100 | 5372.9 | (9-) | ||
6606.8 20 | D | (10) | 1234 1 | 100 | D+Q | 5372.9 | (9-) | |
7578.9 20 | D | (10) | 2206 1 | 100 | D+Q | 5372.9 | (9-) | |
8006.8 10 | C | (13-) | 1442.4 5 | 100 | 6564.4 | (11-) | ||
8426.9 21 | D | (12) | 848 1 1819.8 6 | 73 8 100 10 | Q(+O) Q(+O) | 7578.9 6606.8 | (10) (10) | |
9299.9 23 | D | (14) | 873 1 | 100 | Q(+O) | 8426.9 | (12) |
T1/2(level): From recoil-distance Doppler-shift (RDDS) method in 40Ca(32S,2αγ) (2003Fa01), unless otherwise stated
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - g.s. band | |||||||
0.0 | 0+ | 63.7 s 25 % ε = 100 % εp = ? | |||||
901.7 3 | 2+ | 2.29 ps 35 | 901.5 3 | 100 | E2 | 0.0 | 0+ |
2052.6 4 | 4+ | 1150.8 4 | 100 | E2+M3 | 901.7 | 2+ | |
3465.6 6 | (6+) | 1413.0 4 | 100 | (Q) | 2052.6 | 4+ | |
5180.0 8 | (8+) | 1714.4 5 | 100 | 3465.6 | (6+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - Band based on 3(-). | |||||||
2969.7 5 | (3-) | ||||||
3716.9 7 | (5-) | 16.8 ps +24-20 | 747.5 3 1047.3 4 1664.8 4 | 12.9 28 19.8 31 100.0 32 | (E2) (E1) (E1+M2) | 2969.7 2669.6 2052.6 | (3-) (4+) 4+ |
4245.7 6 | (7-) | 29.9 ps +20-17 | 528.4 3 | 100 | E2 | 3716.9 | (5-) |
5372.9 7 | (9-) | ≤ 2.8 ps | 1127.2 4 | 100 | E2 | 4245.7 | (7-) |
6564.4 8 | (11-) | 1191.5 4 | 100 | 5372.9 | (9-) | ||
8006.8 10 | (13-) | 1442.4 5 | 100 | 6564.4 | (11-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 3 - Band based on (2+). | |||||||
1578.7 3 | (2+) | 5.5 ps +28-14 | |||||
2154.8 4 | (4+) | 576.2 3 | 100 | 1578.7 | (2+) | ||
3406.7 5 | (6+) | 1252.1 4 1353.7 5 | 100 5 53 3 | 2154.8 2052.6 | (4+) 4+ | ||
5175.2 7 | (8+) | 1768.5 5 | 100 | 3406.7 | (6+) |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Additional Data |
901.7 | 2+ | 2.29 ps 35 | 901.5 3 | E2 | B(E2)(W.u.)=27 +5-4 | |
1578.7 | (2+) | 5.5 ps +28-14 | 677.0 3 | (M1+E2) | B(E2)(W.u.)=21 7, B(M1)(W.u.)=0.0056 19 | |
(2+) | 5.5 ps +28-14 | 1579.0 4 | [E2] | B(E2)(W.u.)=0.095 33 | ||
2052.6 | 4+ | 1150.8 4 | E2+M3 | +0.06 1 | ||
3716.9 | (5-) | 16.8 ps +24-20 | 747.5 3 | (E2) | B(E2)(W.u.)=0.92 22 | |
(5-) | 16.8 ps +24-20 | 1047.3 4 | (E1) | B(E1)(W.u.)=3.3E-6 6 | ||
(5-) | 16.8 ps +24-20 | 1664.8 4 | (E1+M2) | -0.09 3 | ||
4245.7 | (7-) | 29.9 ps +20-17 | 528.4 3 | E2 | B(E2)(W.u.)=30.2 20 | |
5372.9 | (9-) | ≤ 2.8 ps | 1127.2 4 | E2 | B(E2)(W.u.)≥7.3 | |
6606.8 | (10) | 1234 1 | D+Q | -3.5 +34-24 | ||
7578.9 | (10) | 2206 1 | D+Q | -6 +6-7 | ||
8426.9 | (12) | 848 1 | Q(+O) | +0.08 5 | ||
(12) | 1819.8 6 | Q(+O) | -0.06 7 | |||
9299.9 | (14) | 873 1 | Q(+O) | 0.00 7 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 0+ | 63.7 s 25 % ε = 100 % εp = ? | E(level): g.s. band. |
901.7 | 2+ | 2.29 ps 35 | E(level): g.s. band. |
1578.7 | (2+) | 5.5 ps +28-14 | E(level): Band based on (2+). |
2052.6 | 4+ | E(level): g.s. band. | |
2154.8 | (4+) | E(level): Band based on (2+). | |
2969.7 | (3-) | E(level): Band based on 3(-). | |
3406.7 | (6+) | E(level): Band based on (2+). | |
3465.6 | (6+) | E(level): g.s. band. | |
3716.9 | (5-) | 16.8 ps +24-20 | E(level): Band based on 3(-). |
4245.7 | (7-) | 29.9 ps +20-17 | E(level): Band based on 3(-). |
5175.2 | (8+) | E(level): Band based on (2+). | |
5180.0 | (8+) | E(level): g.s. band. | |
5372.9 | (9-) | ≤ 2.8 ps | E(level): Band based on 3(-). |
6564.4 | (11-) | E(level): Band based on 3(-). | |
8006.8 | (13-) | E(level): Band based on 3(-). |
E(level) | E(gamma) | Comments |
1578.7 | 677.0 | M(γ): from γ(θ) in 12C(54Fe,2nγ), and RUL |
2669.6 | 1090.9 | M(γ): ΔJ=1 γ from 12C(54Fe,2nγ),54Fe(12C,2nγ) is inconsistent with ΔJ=2 from ΔJπ |
3716.9 | 747.5 | I(γ): unweighted average of 10.0 9 (54Fe,2nγ) and 15.7 11 (32S,2αγ) | 1047.3 | I(γ): unweighted average of 16.7 9 (54Fe,2nγ) and 22.9 16 (32S,2αγ) | 1664.8 | I(γ): unweighted average of 100.0 32 (54Fe,2nγ) and 100.0 54 (32S,2αγ) |
Mass measurements: 2007Cl01, 2007Sc24, 2005Cl08, 2002Li24
Theory references: consult the NSR database at www.nndc.bnl.gov for 101 primary references, 96 dealing with nuclear structure calculations, and five for half-lives in β and cluster decays.
The decay scheme of 64As to 64Ge is not known.
Q-value: Estimated ΔQ(β-)=200 (2021Wa16)
Q-value: Q(ε)=4517 4, Q(εp)=609 4, S(2n)=28320 140 (syst), S(2p)=7725 4 (2021Wa16)