ADOPTED LEVELS, GAMMAS for 79As
Author: Balraj Singh | Citation: Nucl. Data Sheets 135, 193 (2016) | Cutoff date: 31-May-2016
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=2281 keV 5 | S(n)= 8890 keV 11 | S(p)= 9063 keV 6 | Q(α)= -7596 keV 6 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 79Ge β- decay (18.98 S) | B | 79Ge β- decay (39.0 S) |
| C | 79As IT decay (1.21 μs) | D | 76Ge(α,p) |
| E | 80Se(d,3He) | F | 80Se(t,α) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCDEF | 3/2- | 9.01 m 15 % β- = 100 | |||||
| 100.45 5 | A | (1/2-) | 100.48 6 | 100 | (M1) | 0.0 | 3/2- | |
| 109.58 4 | AB DEF | (3/2)- | 109.58 6 | 100 | M1+E2 | 0.0 | 3/2- | |
| 230.57 4 | ABCDEF | (5/2)- | 230.62 5 | 100 | [M1,E2] | 0.0 | 3/2- | |
| 499 2 | DEF | (1/2)- | ||||||
| 603.69 4 | A DE | (1/2,3/2) | 503.26 6 603.70 6 | 100 51 4 | 100.45 0.0 | (1/2-) 3/2- | ||
| 634.06 4 | AB DE | (5/2,7/2) | 524.45 6 634.00 6 | 32 3 100 | 109.58 0.0 | (3/2)- 3/2- | ||
| 772.81 6 | BCDEF | (9/2)+ | 1.21 µs 1 % IT = 100 | 542.27 7 | 100 | [M2] | 230.57 | (5/2)- |
| 875.16 4 | B D | (LE 7/2) | 644.61 8 765.46 6 875.19 6 | 67 9 100 5 66 4 | 230.57 109.58 0.0 | (5/2)- (3/2)- 3/2- | ||
| 1012.03 8 | B | (5/2+) | 781.51 8 902.32 12 | 100 7 31 3 | 230.57 109.58 | (5/2)- (3/2)- | ||
| 1016 5 | DEF | (3/2)- | ||||||
| 1048 4 | DEF | (1/2)- | ||||||
| 1143 3 | DEF | (5/2)- | ||||||
| 1411.98 6 | A D | 808.22 8 1181.44 6 | 37 3 100 | 603.69 230.57 | (1/2,3/2) (5/2)- | |||
| 1434 4 | DEF | |||||||
| 1490.23 8 | AB | 1259.65 7 | 100 | 230.57 | (5/2)- | |||
| 1496.89 10 | B | (5/2+,7/2+,9/2+) | 484.86 6 | 100 | 1012.03 | (5/2+) | ||
| 1505.96 5 | A EF | (3/2)- | 871.78 6 1275.26 10 1396.53 6 1505.85 50 | 3.8 3 4.5 3 23 1 100 5 | 634.06 230.57 109.58 0.0 | (5/2,7/2) (5/2)- (3/2)- 3/2- | ||
| 1517.89 8 ? | B | 745.03 6 ? | 100 | 772.81 | (9/2)+ | |||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 1710 6 | D F | |||||||
| 1811 5 | D F | (9/2)+ | ||||||
| 1869.42 6 | A D | (1/2-,3/2-) | 1265.80 6 1869.25 8 | 39 3 100 | 603.69 0.0 | (1/2,3/2) 3/2- | ||
| 1890.36 5 | B | (5/2+,7/2+,9/2+) | 1015.14 6 1117.56 6 1256.32 6 | 99 5 100 5 100 6 | 875.16 772.81 634.06 | (LE 7/2) (9/2)+ (5/2,7/2) | ||
| 1895 4 | DEF | (1/2)- | ||||||
| 1942 8 | D | |||||||
| 1964.84 9 | B D F | (9/2)+ | 446.90 6 ? 1192.09 8 ? | 100 85 7 | 1517.89 772.81 | (9/2)+ | ||
| 2056 4 | EF | (3/2)- | ||||||
| 2128 10 | F | (1/2+) | ||||||
| 2219 7 | F | |||||||
| 2329 13 | F | |||||||
| 2553 3 | F | 1/2+ | ||||||
| 2636 13 | F | 1/2+ | ||||||
| 2835 9 | F | |||||||
| 2945 13 | F | (5/2-) | ||||||
| 3071 10 | F | (5/2)- | ||||||
| 3166 10 | F | |||||||
| 3332 8 | F | |||||||
| 3479 10 | F | |||||||
E(level): From least-squares fit to Eγ values in 79Ge β- decay. For others, weighted averages have been taken
Jπ(level): Following shell-model orbitals are considered, unless otherwise stated, when Jπ is deduced from L(t,α): s1/2 for L=0, p3/2 for L=1, f5/2 for L=3 and g9/2 for L=4
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Conversion Coefficient | Additional Data |
| 100.45 | (1/2-) | 100.48 6 | (M1) | 0.0888 | α=0.0888 | ||
| 109.58 | (3/2)- | 109.58 6 | M1+E2 | 0.37 8 | 0.129 | α=0.129 24 | |
| 230.57 | (5/2)- | 230.62 5 | [M1,E2] | 0.023 | α=0.023 13 | ||
| 772.81 | (9/2)+ | 1.21 µs 1 % IT = 100 | 542.27 7 | [M2] | 0.0040 | B(M2)(W.u.)=0.0258 2, α=0.0040 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 230.57 | (5/2)- | XREF: E(232.7). | |
| 772.81 | (9/2)+ | 1.21 µs 1 % IT = 100 | XREF: E(779)F(779). |
| 1505.96 | (3/2)- | XREF: F(1501). |
| E(level) | E(gamma) | Comments |
| 100.45 | 100.48 | M(γ): α(K)exp data allows E1 or M1 but systematics suggest Δπ=+ between g.s. and 100 level |
1951Bu25: production and identification of 79As in 80Se(γ,X),E=80 MeV, measured half-life
Nuclear structure calculations: 2015Ku12, 2013Ve10, 2008Yo07 calculated levels, J, π
Q-value: S(2n)=15862 6, S(2p)=22222 6 (2012Wa38)