ADOPTED LEVELS for 111Nb
Author: Jean Blachot | Citation: Nucl. Data Sheets 110, 1239 (2009) | Cutoff date: 1-Feb-2008
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=1.11×104 keV SY | S(n)= 4.8×103 keV SY | S(p)= 1.33×104 keV SY | Q(α)= -8.9×103 keV SY | ||
| Reference: 2012WA38 |
| E(level) (keV) | T1/2(level) |
| 0 | 54 ms 2 % β- = 100 % β-n = ? % β-2n = ? |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | 54 ms 2 % β- = 100 % β-n = ? % β-2n = ? | Theoretical T1/2=151 ms, %β-n=55.6, %β-2n=0.0 (2003Mo09). |
1997Be70, 1997Be12: 111Nb produced and identified in Pb,Be(238U,F), E=750 MeV/nucleon, followed by on-line fragment separator and time of flight method at GSI facility
2011Ni01: 111Nb nuclide produced in Be(238U,F) reactions at E=345 MeV/nucleon produced by the cascade operation of the RBIF complex of accelerators at RIKEN. Target=550 mg/cm2. Identification of 111Nb 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 111Nb 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
2015Lo04: 111Nb nuclide produced at RIBF-RIKEN facility in 9Be(238U,F) reaction at E=345 MeV/nucleon with an average intensity of 6×1010 ions/s. Identification of 111Nb was made by determining atomic Z and mass-to-charge ratio α/Q, where Q=charge state of the ions. The selectivity of ions was based on magnetic rigidity, time-of-flight and energy loss. The separated nuclei were implanted at a rate of 50 ions/s in a stack of eight double-sided silicon-strip detector (WAS3ABi), surrounded by EURICA array of 84 HPGe detectors. Correlations were recorded between the implanted ions and β rays. The half-life of 111Nb isotope was measured from the correlated ion-β decay curves and maximum likelihood analysis technique as described in 2014Xu07. Comparison of measured half-lives with FRDM+QRPA, KTUY+GT2 and DF3+CQRPA theoretical calculations
2013Fa05: theoretical calculations of T1/2 and %β-n
Q-value: Estimated uncertainties (2012Wa38): 500 for Q(β-) and S(n), 810 for S(p) and Q(α)
Q-value: S(2n)=7780 500, Q(β-n)=8880 450 (syst,2012Wa38). S(2p)=6640 (theory,1997Mo25)