ADOPTED LEVELS for 164Ir
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 147, 1 (2018) | Cutoff date: 30-Nov-2017
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 10110 keV CA | S(p)= -1560 keV SY | Q(α)= 6970 keV SY | |||
| Reference: 2017WA10,1997MO25 |
| E(level) (keV) | Jπ(level) | T1/2(level) |
| 0? | % ε = ? % p = ? % α = ? | |
| 0+X | (9+) | 70 µs 10 % ε = ? % α = 4 2 % p > 0 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | % ε = ? % p = ? % α = ? | Ground state of 164Ir is not yet identified. From systematics, 2017Au03 give half-life=1 ms and Jπ=2-. Theoretical half-life=0.14 s (1997Mo25). | |
| 0+X | (9+) | 70 µs 10 % ε = ? % α = 4 2 % p > 0 | E(p)=1814 6 (2014Dr02), 1807 14 (2002Ma61) and 1817 9 (2001Ke05) from decay of 164Ir. E(level): E(p)=1814 6 (2014Dr02), 1807 14 (2002Ma61) and 1817 9 (2001Ke05) from decay of 164Ir. |
2001Ke05 and 2002Ma61 for the identification of 164Ir are conference reports.
2002Ma61 (conference paper): 164Ir produced and identified in reaction 92Mo(78Kr,p5n) E=437 MeV, fragment mass analyzer (FMA) with gas-filled position-sensitive parallel grid avalanche counter (PGAC) and double-sided silicon strip detector (DSSD) detectors at focal plane; ATLAS facility at Argonne. Isotopic identification by observation of an 1807 proton group in correlation with α particles from 163Os α decay. Deduced S(p)=1844 9, including correction for electron screening
2001Ke05 (conference paper): 164Ir produced and identified in reaction 106Cd(64Zn,p5n), gas-filled recoil mass separator (RITU) with position-sensitive parallel plate avalanche counter (PPAC) and double-sided silicon strip detector (DSSD) detectors at focal plane. Isotopic identification by observation of an 1817 proton group in correlation with Eα=6493 10 from 163Os α decay.
2014Dr02: 164Ir produced in 92Mo(78Kr,p5n) reaction at 428-450 MeV using RITU separator and GREAT spectrometer at Jyvaskyla. Measured Eα, T1/2, α branching ratio
2002So02: Compilation and evaluation of proton decay data
For theoretical calculations of half-life by proton decay, consult NSR database for about 30 references. These are listed in the ENSDF dataset as document records
Q-value: Estimated uncertainties (syst,2017Wa10): ΔS(p)=ΔQ(α)=100
Q-value: S(n) from 1997Mo25; S(p) and Q(α) from 2017Wa10
Q-value: S(2p)=-580 370, Q(εp)=11370 320 (syst,2017Wa10). S(2n)=22110 (theory, 1997Mo25)