ADOPTED LEVELS, GAMMAS for 49K
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 28-FEB-2011
Author: T. W. Burrows | Citation: Nucl. Data Sheets 109, 1879 (2008) | Cutoff date: 14-Jul-2008
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=11688.4 keV 9 | S(n)= 5398.3 keV 12 | S(p)= 1.45×104 keV SY | Q(α)= -1.368×104 keV 10 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 50Ar β-n decay (85 MS) | B | 238U(48Ca,xγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
| 0.0 | AB | (1/2+,3/2+) | 1.26 s 5 % β- = 100 % β-n = 86 9 | ||||
| 91.7 3 | B | (1/2+,3/2+) | 8 ns 5 | 91.7 3 | 100 | 0.0 | (1/2+,3/2+) |
| 862.8 3 | B | (5/2+) | 2.2 ps 4 | 771.1 2 862.6 8 | 100 7 7 | 91.7 0.0 | (1/2+,3/2+) (1/2+,3/2+) |
| 1102.9 8 ? | B | (5/2+) | 1011.2 8 | 100 | 91.7 | (1/2+,3/2+) | |
| 1438.3 4 | B | (7/2+) | > 0.35 ps | 575.5 2 | 100 | 862.8 | (5/2+) |
| 2104.2 5 | B | (7/2-) | > 0.35 ps | 1241.4 4 | 100 | 862.8 | (5/2+) |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (1/2+,3/2+) | 1.26 s 5 % β- = 100 % β-n = 86 9 | $ πd3/2-1 or πs1/2-1 state. |
| 91.7 | (1/2+,3/2+) | 8 ns 5 | $ πd3/2-1 or πs1/2-1 state. |
| 1102.9 | (5/2+) | Placement of 1011γ is either to 92-keV level as shown in figure 3 of 2010Br14 or to the g.s. E(level): Placement of 1011γ is either to 92-keV level as shown in figure 3 of 2010Br14 or to the g.s. | |
| 2104.2 | (7/2-) | > 0.35 ps | πf7/2 state. |
| E(level) | E(gamma) | Comments |
Z=19, n=30, neutron rich nucleus, near major shells Z=20 and n=28, shell model calculations. Test of multi-nucleon transfer reaction to study neutron rich nuclei.
Identification of 49K in 238U(p,F) (1972Kl04,1972RiZJ)
1983RaZR, 1982Ca04: U(p,X)E=600 MeV. Measured β’s (scin), γ’s, β(t) and γ(t), n’s (long counter), and βn and γn. The thesis of 1983RaZR is apparently a more complete report of the work presented by 1982Ca04.
2009No01: calculated levels, J, π, shell model in large space
Q-value: Note: Current evaluation has used the following Q record 10970 70 6.27×103 7 13890 syst-1438×101 14 2009AuZZ,2003Au03
Q-value: Estimated ΔSP=306 keV (2009AuZZ,2003Au03)
Q-value: Q(β-n)=5.820 MeV 70, S(2n)=10770 70, S(2p)=34380 600 (syst) (2009AuZZ,2003Au03)