ADOPTED LEVELS, GAMMAS for 45K
Author: T. W. Burrows | Citation: Nucl. Data Sheets 109, 171 (2008) | Cutoff date: 30-Oct-2007
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=4196.5 keV 7 | S(n)= 8905.5 keV 7 | S(p)= 11231.3 keV 17 | Q(α)= -1.173×104 keV 7 | ||
Reference: 2012WA38 |
References: | |||
A | 45Ar β- decay | B | 46Ca(t,α),(d,3He) |
C | 48Ca(p,α) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0.0 | ABC | 3/2+ | 17.81 m 61 % β- = 100 | |||||
474.45 14 | ABC | 1/2+ | 474.43 15 | 100 | 0.0 | 3/2+ | ||
1020.03 4 | ABC | (3/2,5/2,7/2+) | < 0.7 ns | 1020.04 5 | 100 | D,E2 | 0.0 | 3/2+ |
1081.38 5 | ABC | (5/2-,7/2-) | 3.2 ns 4 | 61.34 5 1081.21 19 | 100.0 15 5.2 25 | D (E1,M2) | 1020.03 0.0 | (3/2,5/2,7/2+) 3/2+ |
1424.3 3 | AB | 1/2,3/2,5/2(+) | 949.8 3 1424.4 5 | 100.0 12 65.3 12 | 474.45 0.0 | 1/2+ 3/2+ | ||
1473.9 3 | A | ≤ 0.7 ns | 1473.6 3 | 100 | D,Q | 0.0 | 3/2+ | |
1639.15 7 | A C | 557.76 9 619.25 12 1638.81 22 | 24.4 11 31.0 26 100.0 26 | 1081.38 1020.03 0.0 | (5/2-,7/2-) (3/2,5/2,7/2+) 3/2+ | |||
1722.6 3 | ABC | 1722.5 3 | 100 | 0.0 | 3/2+ | |||
2188.22 8 | A C | 549.08 8 1106.82 8 | 23.8 15 100.0 33 | 1639.15 1081.38 | (5/2-,7/2-) | |||
2517.0 3 | A | 1042.8 3 1434.8 10 2517.9 5 | 92 15 100 21 88 16 | 1473.9 1081.38 0.0 | (5/2-,7/2-) 3/2+ | |||
2568.7 4 | A | 845.4 10 1548.5 5 | 34.6 6 100 6 | 1722.6 1020.03 | (3/2,5/2,7/2+) | |||
2747.9 6 | A C | 1323.2 6 2749.8 16 | 67 15 100 15 | 1424.3 0.0 | 1/2,3/2,5/2(+) 3/2+ | |||
2786.6 6 ? | A C | 597.8 5 ? | 100 | 2188.22 | ||||
3311.18 24 | A C | 1123.1 5 1670.7 8 | 100 4 25 4 | 2188.22 1639.15 | ||||
3398.3 6 ? | A | 1209.5 4 ? | 100 | 2188.22 | ||||
3.44E+3 3 | C | |||||||
3.69E+3 3 ? | C | (5/2+) | ||||||
3707.2 3 | A | 1138.2 5 2283.2 7 2687.5 4 3703.2 13 | 2.0 6 2.5 7 27.8 27 100.0 28 | 2568.7 1424.3 1020.03 0.0 | 1/2,3/2,5/2(+) (3/2,5/2,7/2+) 3/2+ | |||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
3753 10 | B | (3/2+,5/2+) | ||||||
3996.62 13 | A C | 597.8 5 ? 685.3 2 1209.5 4 ? 1808.38 16 2357.43 15 3995.3 15 | <2.5 9.2 13 <3.8 100.0 26 59.6 16 2.1 5 | 3398.3 3311.18 2786.6 2188.22 1639.15 0.0 | 3/2+ | |||
4044.0 10 | A | 4043.8 10 | 100 | 0.0 | 3/2+ | |||
4357.3 4 | A | 1840.1 5 2885.0 20 3338.1 10 4356.0 10 | 100 18 38 15 66.7 24 58 12 | 2517.0 1473.9 1020.03 0.0 | (3/2,5/2,7/2+) 3/2+ | |||
4569.1 10 | A C | 4568.9 10 | 100 | 0.0 | 3/2+ | |||
4.90E+3 3 | C | |||||||
5.13E+3 3 | C | |||||||
7.77E+3 5 | C | |||||||
12.62E+3 5 | C | (5/2-,7/2-) |
E(level): From β- decay, except as noted
Jπ(level): From angular momentum transfer in (t,α), except as noted. See β- decay (1980Hu10) for other suggested Jπ based on the assumption that Jπ(45Ar g.s.)=(7/2-)
T1/2(level): From γγ(t) in β- decay (1980Hu01), except for the g.s.
M(γ): From comparison to RUL, except as noted
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
1081.38 | (5/2-,7/2-) | 3.2 ns 4 | 61.34 5 | D | 0.07 | B(E1)(W.u.)≤0.00059 8, B(M1)(W.u.)≤0.026 9, α=0.07 3, α(K)=0.060 24, α(L)=0.0051 20, α(M)=0.00055 21, α(N+)=2.0E-5 8 |
(5/2-,7/2-) | 3.2 ns 4 | 1081.21 19 | (E1,M2) | 7.E-5 | B(E1)(W.u.)≤6.E-9 3, B(M2)(W.u.)≤0.024 12, α=7.E-5 4, α(K)=6.E-5 4, α(L)=5.E-6 3, α(M)=6.E-7 4, α(N)=2.1E-8 12, α(N+)=2.1E-8 12 |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 3/2+ | 17.81 m 61 % β- = 100 | μ=+0.1734 8 (2005St24,1982To02), CONF=(P,D3/2,-1) (1978Pe04) Jπ(level): C2((d,3He),g.s.) is considerably smaller than the results for 42Ca(d,3He) and 44Ca(d,3He), which were close to the theoretical expectation C2S=4.0. C2((d,3He),470)=1.0 is also about half the theoretical value of C2S=2.0 obtained from transitions to 43K and 41K. This result indicates a probable appreciable admixture of core-excited configurations in the g.s. wave function of 45K. (1971Yn02). |
474.45 | 1/2+ | CONF=(P,S1/2,-1) (1978Pe04) Jπ(level): C2((d,3He),g.s.) is considerably smaller than the results for 42Ca(d,3He) and 44Ca(d,3He), which were close to the theoretical expectation C2S=4.0. C2((d,3He),470)=1.0 is also about half the theoretical value of C2S=2.0 obtained from transitions to 43K and 41K. This result indicates a probable appreciable admixture of core-excited configurations in the g.s. wave function of 45K. (1971Yn02). | |
2786.6 | E(level): Tentative placement. The sum of the 597.8 and 1209.5 γ’s is 1807.3, an energy at which a γ is observed and assigned to the crossover transition 3.99-2.19 MeV; as there is no further evidence, the intermediate state could Be at 2.79 or 3.40 MeV. | ||
3398.3 | E(level): Tentative placement. The sum of the 597.8 and 1209.5 γ’s is 1807.3, an energy at which a γ is observed and assigned to the crossover transition 3.99-2.19 MeV; as there is no further evidence, the intermediate state could Be at 2.79 or 3.40 MeV. See footnote on 2.79- or 3.40-MeV state. May Be the same as the following state. | ||
3.44E+3 | E(level): From (p,α). | ||
3.69E+3 | (5/2+) | E(level): See footnote on 2.79- or 3.40-MeV state. May Be the same as the following state. From (p,α). | |
3707.2 | If Jπ(45Ar g.s.)=7/2-, then the 3690 state observed in (p,α) and this state are not the same since Jπ(3707)=5/2-,7/2- from γ to 3/2+ and log ft=4.7 1 from 45Ar g.s. E(level): If Jπ(45Ar g.s.)=7/2-, then the 3690 state observed in (p,α) and this state are not the same since Jπ(3707)=5/2-,7/2- from γ to 3/2+ and log ft=4.7 1 from 45Ar g.s. | ||
3753 | (3/2+,5/2+) | E(level): From (t,α),(d,3He). | |
4.90E+3 | E(level): From (p,α). | ||
5.13E+3 | E(level): From (p,α). | ||
7.77E+3 | E(level): From (p,α). | ||
12.62E+3 | (5/2-,7/2-) | E(level): From (p,α). |
Levels: 1980Jo09 examined one-hole states using an extremely large model space. See below for the results on specific states used in the current evaluation. The calculations also predicted yrast states with Jπ=9/2+ to 15/2+ at 2.25, 2.7, 3.0, and 3.3 MeV.
Gammas: All data are from β- decay. See β- decay for unplaced transitions
Q-value: Note: Current evaluation has used the following Q record 4196.5 7 8877 36 11231.3 7 -11733 69 2003Au03,2007Ya08
Q-value: 2007Ya08: Ti(p,X) E=1.4 GeV. Measured masses; tandem Penning trap mass spectrometer, ISOLTRAP, and ISOLDE High-Resolution Separator at CERN. Relative mass uncertainty of δm/m=10×10-8 routinely reached. Reference ion: 39K+; Δ’ (39K)=-33807.01 keV 19 (2003Au03)