ADOPTED LEVELS for 117La
Author: Jean Blachot | Citation: ENSDF | Cutoff date: 1-Mar-2009
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 1.40×104 keV SY | S(p)= -820 keV 3 | Q(α)= 2.8×103 keV SY | |||
| Reference: 2012WA38 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0.0 | (3/2+,3/2-) | 23.5 ms 26 % p = 93.9 7 % ε = 6.1 7 |
| 151 12 ? | (9/2+) | 10 ms 5 % p = 97.4 13 % ε = 2.6 13 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (3/2+,3/2-) | 23.5 ms 26 % p = 93.9 7 % ε = 6.1 7 | E(p)=806 keV 5, Q(p)=823 keV 5 from 2001Ma69. Other: E(p)=783 keV 6, Q(p)=800 keV 6, (2001So02). The data from 2001Ma69 is adopted here simply because the proton energy spectrum has significantly less background than that from 2001So02. E(level): E(p)=806 keV 5, Q(p)=823 keV 5 from 2001Ma69. Other: E(p)=783 keV 6, Q(p)=800 keV 6, (2001So02). The data from 2001Ma69 is adopted here simply because the proton energy spectrum has significantly less background than that from 2001So02. |
| 151 | (9/2+) | 10 ms 5 % p = 97.4 13 % ε = 2.6 13 | Level observed only by 2001So02. It should have been seen by 2001Ma69, but was not. E(level): Level observed only by 2001So02. It should have been seen by 2001Ma69, but was not. |
This data set adopted from Proton Radioactivity in Z>50 Nuclides, α.α. Sonzogni, Nuclear Data Sheets 95, 1 (2002)
Experimental works:
2001So02: 64Zn(58Ni,p4n) E=310 MeV, recoil mass separator (Legnaro) with PPAC/DDSD detectors at focal plane.
2001Ma69: 64Zn(58Ni,p4n) E=295-310 MeV, recoil mass separator (FMA) with PPAC/DDSD detectors at focal plane.
Ground-state deformation: from the analysis of the proton radioactivity data, β≈0.3 was deduced (2001So02,2001Ma69)
Theoretical works:
2001Go20: β2=0.31, β4=0.02, S(p)=-0.5 MeV
1997Mo25: S(p)=-0.50 MeV, S(2p)=1.69 MeV, Q(α)=2.14 MeV, T1/2(β)=0.3883 s, T1/2(α)=5.385×106 y
1995Mo29: β2=0.290, β4=0.100, β6=-0.002
1995Ab38: β2=0.31, β4=0.08, S(p)=-0.5 MeV
1976Li30: S(p)=-1.01 MeV, Q(α)=2.68 MeV
Q-value: Note: Current evaluation has used the following Q record -803 112844.0 syst 2009AuZZ
Q-value: ΔQ(α)=405 (2009AuZZ)