ADOPTED LEVELS for 111Zr
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 10-JUN-2015
Author: Balraj Singh | Citation: ENSDF | Cutoff date: 15-AUG-2010
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=11320 keV SY | S(n)= 2750 keV SY | S(p)= 17220 keV CA | Q(α)= -11090 keV SY | ||
Reference: 2012WA38,1997MO25 |
E(level) (keV) | T1/2(level) |
0 | 24.0 ms 50 % β- = 100 % β-n = ? % β-2n = ? |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 24.0 ms 50 % β- = 100 % β-n = ? % β-2n = ? | Theoretical %β-n=14.7, %β-2n=1.0 (2003Mo09). |
2010Oh02: 111Zr nuclide identified in Be(238U,F) and Pb(238U,F) reactions with a 238U86+ beam energy of 345 MeV/nucleon produced by the cascade operation of the RBIF accelerator complex of the linear accelerator RILAC and four cyclotrons RRC, fRC, IRC and SRC. Identification of 111Zr nuclei was made on the basis of magnetic rigidity, time-of-flight and energy loss of the fragments using BigRIPS fragment separator. Experiments performed at RIKEN facility. Based on α/Q spectrum and Z versus α/Q plot, 26 counts were assigned to 111Zr isotope. (Q=charge state). Measured σ=20 pb (2010Oh02), systematic uncertainty≈40%
2015Lo04: 111Zr 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 111Zr 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 111Zr 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
Q-value: S(p) from 1997Mo25; all other values from 2012Wa38
Q-value: Estimated uncertainties (2012Wa38): 760 for Q(β-), 920 for S(n), 900 for Q(α)
Q-value: Q(β-n)=6510 730, S(2n)=7510 860 (syst,2012Wa38). S(2p)=33120 (theory,1997Mo25)