ADOPTED LEVELS, GAMMAS for 43K
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 126, 1 (2015) | Cutoff date: 31-Mar-2015
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=1833.4 keV 5 | S(n)= 9624.7 keV 4 | S(p)= 9442 keV 6 | Q(α)= -9200.1 keV 18 | ||
Reference: 2012WA38 |
References: | |||
A | 43Ar β- decay (5.37 M) | B | 9Be(36S,NPG) |
C | 40Ar(α,pγ),41K(t,pγ) | D | 41K(t,p) |
E | 44Ca(μ-,νnγ) | F | 44Ca(d,3He) |
G | 44Ca(t,α) | H | 44Ca(11B,12C) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0 | ABCDEFGH | 3/2+ | 22.3 h 1 % β- = 100 | |||||
561.20 5 | ABCDEFGH | 1/2+ | 1.4 ps +17-7 | 561.10 5 | 100 | 0 | 3/2+ | |
738.30 6 | ABC EFGH | 7/2- | 200 ns 5 | 738.23 6 | 100 | M2+E3 | 0 | 3/2+ |
975.32 6 | ABCDEFGH | 3/2- | 1.6 ps +14-6 | 414.0 1 975.3 1 | 4.3 3 100.0 3 | [E1] [E1] | 561.20 0 | 1/2+ 3/2+ |
1109.93 6 | ABCDEFGH | 3/2+ | 1.0 ps 8 | 548.62 6 1110.1 1 | 43 5 100 5 | 561.20 0 | 1/2+ 3/2+ | |
1206.91 6 | ABCD G | (5/2,7/2)+ | > 4.8 ps | 1206.95 9 | 100 | 0 | 3/2+ | |
1509.99 6 | ABCD | 7/2+ | 5.7 ps 15 | 303.09 5 1510.05 7 | 9 2 100 2 | E2 | 1206.91 0 | (5/2,7/2)+ 3/2+ |
1549.96 9 | A C FG | 3/2+,5/2+ | 0.09 ps 6 | 439.3 3 1550.0 1 | 12 2 100 2 | 1109.93 0 | 3/2+ 3/2+ | |
1815 10 | D | (5/2:11/2)+ | ||||||
1849.57 8 | BC G | 11/2- | 4.6 ps 12 | 1111.14 6 | 100 | E2 | 738.30 | 7/2- |
1865.65 8 | A C F | (3/2,5/2+) | 755.0 3 890.4 1 1304.3 7 1866.1 2 | 1.5 5 100 3 2.6 5 59 3 | 1109.93 975.32 561.20 0 | 3/2+ 3/2- 1/2+ 3/2+ | ||
1956 10 | D | (5/2:11/2)+ | ||||||
1986.57 8 | BC | (9/2) | 476.58 6 | 100 | D | 1509.99 | 7/2+ | |
2035 10 | D | 3/2+ | ||||||
2048.88 9 | ABC | (9/2) | 1.7 ps 6 | 1310.58 7 | 100 | D | 738.30 | 7/2- |
2081.0 4 | B D | (5/2,7/2)+ | 873.9 4 2081.3 7 | 100 24 66 22 | 1206.91 0 | (5/2,7/2)+ 3/2+ | ||
2177.68 11 | A C FG | 5/2(+) | < 0.07 ps | 667.5 3 1202.4 3 1439.8 2 2176.2 7 | 0.53 13 30 5 100 5 0.79 13 | 1509.99 975.32 738.30 0 | 7/2+ 3/2- 7/2- 3/2+ | |
2189.32 14 | A FG | (3/2,5/2,7/2) | 639.7 3 1080.0 3 2189.2 3 | 13.5 14 22 4 100 4 | 1549.96 1109.93 0 | 3/2+,5/2+ 3/2+ 3/2+ | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
2218 10 | D | (3/2:9/2)- | ||||||
2344.96 9 | A C | (3/2-) | 0.7 ps +14-4 | 167.1 2 479.2 2 1138.1 2 1235.7 3 1369.9 2 1783.7 2 2344.5 2 | 1.13 13 53 3 3.8 8 2.8 5 90 5 5.6 5 100 5 | 2177.68 1865.65 1206.91 1109.93 975.32 561.20 0 | 5/2(+) (3/2,5/2+) (5/2,7/2)+ 3/2+ 3/2- 1/2+ 3/2+ | |
2451 10 | FG | 1/2+ | ||||||
2508.34 10 | BCD | (11/2+) | > 5 ps | 460.5 6 998.81 13 | 100 3 69 4 | D+Q Q | 2048.88 1509.99 | (9/2) 7/2+ |
2548 10 | D | (1/2,3/2,5/2)- | ||||||
2668 15 | FG | 3/2+,5/2+ | ||||||
2784 10 | D | (1/2:7/2)+ | ||||||
2879 10 | D | (1/2:7/2)+ | ||||||
2981 15 | G | |||||||
2986.76 19 | B | (13/2-) | 478.39 16 | 100 | 2508.34 | (11/2+) | ||
3057.26 21 | A FG | (5/2)+ | 2318.9 2 | 100 | 738.30 | 7/2- | ||
3084 15 | FG | 3/2+,5/2+ | ||||||
3114.69 10 | BC | 15/2- | 3.5 ps 7 | 1265.09 7 | 100 | E2 | 1849.57 | 11/2- |
3139.39 10 | BC | (13/2) | 630.86 12 1289.62 8 | 13.4 18 100 12 | D(+Q) D | 2508.34 1849.57 | (11/2+) 11/2- | |
3150 18 | G | |||||||
3190 10 | D | (1/2:7/2)+ | ||||||
3229 15 | FG | 3/2+,5/2+ | ||||||
3264.34 11 | A D | (3/2,5/2)+ | 1398.7 1 2287.6 5 3264.3 2 | 63 4 33 6 100 6 | 1865.65 975.32 0 | (3/2,5/2+) 3/2- 3/2+ | ||
3309.86 13 | A D | (3/2,5/2)+ | 1121.0 3 1132.6 2 1443 2102.3 5 2333.9 2 3309.9 3 | 4.0 18 15 3 60 12 12 3 100 12 9.2 12 | 2189.32 2177.68 1865.65 1206.91 975.32 0 | (3/2,5/2,7/2) 5/2(+) (3/2,5/2+) (5/2,7/2)+ 3/2- 3/2+ | ||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3342 15 | FG | 3/2+,5/2+ | ||||||
3393.14 20 | A D | (3/2:7/2)+ | 3393.0 2 | 100 | 0 | 3/2+ | ||
3455.60 12 | A G | (3/2-) | 1277.9 5 1590.4 2 1905.9 6 2345 2479.9 2 2894.2 2 3455.1 4 | 3.8 6 16.2 16 6.0 11 1.9 6 100 3 27 2 3.0 17 | 2177.68 1865.65 1549.96 1109.93 975.32 561.20 0 | 5/2(+) (3/2,5/2+) 3/2+,5/2+ 3/2+ 3/2- 1/2+ 3/2+ | ||
3580 30 | G | |||||||
3591.28 10 | B | (15/2+) | 451.82 4 476.4 3 1083.15 7 | 72.6 19 11 5 100 11 | D+Q D Q | 3139.39 3114.69 2508.34 | (13/2) 15/2- (11/2+) | |
3608.46 15 | A | (5/2-,7/2-) | 1419.3 2 1559.9 2 ? 2057.9 3 2097.8 5 2401.8 3 2870.1 3 | 100 9 147 22 83 9 76 15 22 5 58 7 | 2189.32 2048.88 1549.96 1509.99 1206.91 738.30 | (3/2,5/2,7/2) (9/2) 3/2+,5/2+ 7/2+ (5/2,7/2)+ 7/2- | ||
3646.1 4 | A G | (3/2,5/2,7/2+) | 2438.9 5 2535.7 7 3646.4 5 | 100 5 18 5 7.3 16 | 1206.91 1109.93 0 | (5/2,7/2)+ 3/2+ 3/2+ | ||
3714.16 22 | A FG | (3/2+,5/2+) | 1369 2506.7 15 2603.4 4 2739.5 7 3714.3 3 | 4.3 25 10 3 10 4 22 4 100 6 | 2344.96 1206.91 1109.93 975.32 0 | (3/2-) (5/2,7/2)+ 3/2+ 3/2- 3/2+ | ||
3837 15 | G | |||||||
3880 15 | FG | (3/2+,5/2+) | ||||||
3970 30 ? | G | |||||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3985.28 25 | B | 1477.0 3 1936.4 5 | 100 20 64 17 | 2508.34 2048.88 | (11/2+) (9/2) | |||
4018 15 | FG | 3/2+,5/2+ | ||||||
4070 30 | G | |||||||
4124 15 | FG | 3/2+,5/2+ | ||||||
4177 15 | G | |||||||
4234 15 | G | |||||||
4290 30 | G | |||||||
4410 40 | G | |||||||
4472 15 | FG | 3/2+,5/2+ | ||||||
4540 40 | G | |||||||
4540.4 3 | B | 555.2 3 1401.0 5 1553.1 6 | 100 22 86 22 93 22 | 3985.28 3139.39 2986.76 | (13/2) (13/2-) | |||
4680 40 ? | G | |||||||
4794 15 | FG | 3/2+,5/2+ | ||||||
4860 40 ? | G | |||||||
4920 40 ? | G | |||||||
4930.3 3 | B | (19/2-) | 1815.61 26 | 100 15 | 3114.69 | 15/2- | ||
5030 40 | G | |||||||
5150 40 ? | G | |||||||
5194 30 | FG | 3/2+,5/2+ | ||||||
5260 40 | G | |||||||
5380 40 | G | |||||||
5610 30 | F | 3/2+,5/2+ | ||||||
5900 30 | F | 3/2+,5/2+ | ||||||
7450 30 | F | (3/2+,5/2+) |
E(level): From least-squares fit to Eγ data for levels populated in γ-ray studies. For others, weighted averages of available values are taken
Jπ(level): When L-transfer arguments are used, the target is Jπ=0+, except for 41K(t,p), where target Jπ=3/2+. Arguments based on log ft values are considered as tentative since the decay scheme of 43Ar decay is not considered as well established
T1/2(level): From DSAM in (α,pγ),(t,pγ), unless otherwise stated
E(γ): From β- decay, (α,pγ), (t,pγ) and (36S,npγ).
I(γ): Primarily from β- decay. Weighted averages are taken when values with uncertainties are also available from 9Be(36S,npγ), (α,pγ), (t,pγ).
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - Possible positive-parity yrast band. | |||||||
561.20 5 | 1/2+ | 1.4 ps +17-7 | |||||
1509.99 6 | 7/2+ | 5.7 ps 15 | 303.09 5 1510.05 7 | 9 2 100 2 | E2 | 1206.91 0 | (5/2,7/2)+ 3/2+ |
2508.34 10 | (11/2+) | > 5 ps | 460.5 6 998.81 13 | 100 3 69 4 | D+Q Q | 2048.88 1509.99 | (9/2) 7/2+ |
3591.28 10 | (15/2+) | 451.82 4 476.4 3 1083.15 7 | 72.6 19 11 5 100 11 | D+Q D Q | 3139.39 3114.69 2508.34 | (13/2) 15/2- (11/2+) | |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 2 - Possible negative-parity yrast band. | |||||||
738.30 6 | 7/2- | 200 ns 5 | |||||
1849.57 8 | 11/2- | 4.6 ps 12 | 1111.14 6 | 100 | E2 | 738.30 | 7/2- |
3114.69 10 | 15/2- | 3.5 ps 7 | 1265.09 7 | 100 | E2 | 1849.57 | 11/2- |
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Mixing Ratio | Additional Data |
738.30 | 7/2- | 200 ns 5 | 738.23 6 | M2+E3 | -0.13 2 | B(E3)(W.u.)=7.7 24, B(M2)(W.u.)=0.0567 15 |
975.32 | 3/2- | 1.6 ps +14-6 | 414.0 1 | [E1] | B(E1)(W.u.)=0.00020 +8-18 | |
3/2- | 1.6 ps +14-6 | 975.3 1 | [E1] | B(E1)(W.u.)=0.00036 +14-32 | ||
1509.99 | 7/2+ | 5.7 ps 15 | 1510.05 7 | E2 | B(E2)(W.u.)=1.3 4 | |
1849.57 | 11/2- | 4.6 ps 12 | 1111.14 6 | E2 | B(E2)(W.u.)=8.1 22 | |
2508.34 | (11/2+) | > 5 ps | 460.5 6 | D+Q | -0.2 | |
3114.69 | 15/2- | 3.5 ps 7 | 1265.09 7 | E2 | B(E2)(W.u.)=5.6 12 | |
3591.28 | (15/2+) | 451.82 4 | D+Q | -0.2 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 3/2+ | 22.3 h 1 % β- = 100 | μ=+0.1633 8 (1982To02,2014StZZ) Configuration=π1d3/2-1 (92%) (2014Pa45) from shell-model calculations. |
561.20 | 1/2+ | 1.4 ps +17-7 | Adopted (by 1977En02) spectroscopic factor S=1.9 5 (proton pickup). E(level): Possible positive-parity yrast band. |
738.30 | 7/2- | 200 ns 5 | μ=+4.43 5 (1983Ra37,2014StZZ) XREF: F(748). E(level): Possible negative-parity yrast band. |
975.32 | 3/2- | 1.6 ps +14-6 | XREF: d(1007)H(984). |
1109.93 | 3/2+ | 1.0 ps 8 | XREF: F(1119)H(1121). |
1509.99 | 7/2+ | 5.7 ps 15 | E(level): Possible positive-parity yrast band. |
1549.96 | 3/2+,5/2+ | 0.09 ps 6 | Jπ(level): L(d,3He) and/or L(t,α)=2. |
1849.57 | 11/2- | 4.6 ps 12 | E(level): Possible negative-parity yrast band. |
1986.57 | (9/2) | XREF: C(?). | |
2508.34 | (11/2+) | > 5 ps | E(level): Possible positive-parity yrast band. |
2668 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
3114.69 | 15/2- | 3.5 ps 7 | E(level): Possible negative-parity yrast band. |
3229 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
3264.34 | (3/2,5/2)+ | XREF: d(3254). | |
3342 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
3591.28 | (15/2+) | E(level): Possible positive-parity yrast band. | |
3714.16 | (3/2+,5/2+) | XREF: F(3730). | |
4018 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
4124 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
4472 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
4794 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
5194 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
5610 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. | |
5900 | 3/2+,5/2+ | Jπ(level): L(d,3He) and/or L(t,α)=2. |
E(level) | E(gamma) | Comments |
3264.34 | 2287.6 | E(γ): poor fit; Δ(Eγ) was increased from 0.2 to 0.5 by evaluators. |
Hyperfine studies, isotope shifts, moments, radius: 2014Pa45, 2014Kr04, 1982To02, 1982Du06
Mass Measurements: 2007Ya08
Q-value: S(2n)=17158.5 4, S(2p)=23850 40 (2012Wa38).