ADOPTED LEVELS, GAMMAS for 100Kr
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 172, 1 (2021) | Cutoff date: 31-Jan-2021
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=11200 keV SY | S(n)= 4360 keV SY | S(p)= 18730 keV CA | Q(α)= -11610 keV CA | ||
| Reference: 2017Wa10,2019MO01 |
| References: | |||
| A | 1H(101Rb,2pγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) |
| 0 | A | 0+ | 7 ms +11-3 % β- = 100 % β-n = ? % β-2n = ? | ||
| 309 10 | A | (2+) | 309 10 | 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 0+ | 7 ms +11-3 % β- = 100 % β-n = ? % β-2n = ? | Theoretical T1/2=37.9 ms, %β-n=30, %β-2n=0.0 (2019Mo01). E(level): Theoretical T1/2=37.9 ms, %β-n=30, %β-2n=0.0 (2019Mo01). |
1997Be70: 100Kr produced and identified in 9Be(238U,X) reaction at E=750 MeV/nucleon followed by mass separation. α total of three counts were assigned to 100Kr with corresponding cross section of 0.5 nb, time-of-flight method for isotopic identification
2011Ni01: 100Kr nuclide produced in Be(238U,F) reactions at E=345 MeV/nucleon produced by the cascade operation of the RIBF complex of accelerators at RIKEN. Target=550 mg/cm2. Identification of 100Kr made on the basis of magnetic rigidity, time-of-flight and energy loss. The separated nuclei were implanted in a nine-layer double-sided silicon-strip detector (DSSSD). Correlations were recorded between the heavy ions and β rays. The half-life of 100Kr isotope was measured from the correlated ion-β decay curves and maximum likelihood analysis technique. In the analysis of the decay curve, β-detection efficiency, background rate, daughter and granddaughter (including those populated in delayed neutron decays) half-lives, and β-delayed neutron emission probabilities were considered. Comparison of measured half-lives with FRDM+QRPA and KTUY+GT2 calculations
Theory references: consult the NSR database (www.nndc.bnl.gov/nsr/) for 20 primary references, 16 dealing with nuclear structure calculations and four with decay modes and half-lives.
Experimental data for the first (2+) state are available only from 1H(101Rb,2pγ) (2017Fl03)
Q-value: Estimated uncertainties (2017Wa10): 400 for Q(β-), 570 for S(n)
Q-value: Q(β-) and S(n) from 2017Wa10. S(p) and Q(α) are theoretical values from 2019Mo01
Q-value: S(2n)=6880 500, Q(β-n)=8000 400 (syst,2017Wa10). Q(β-2n)=3170 400 (deduced by evaluators from masses in 2017Wa10). S(2p)=34990 (2019Mo01, theory).