ADOPTED LEVELS for 108Y

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 10-JUN-2015 

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 15-AUG-2010 

Author: Jean Blachot |  Citation: ENSDF |  Cutoff date: 1-Jul-2008 

Author: Jean Blachot |  Citation: Nucl. Data Sheets 91, 135 (2000) |  Cutoff date: 1-Jun-2000 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=14060 keV SYS(n)= 3000 keV SYS(p)= 15690 keV SYQ(α)= -11650 keV CA
Reference: 2012WA38,1997MO25

General Comments:

2010Oh02: 108Y 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 109Y 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, 122 counts in one setting and 10 counts in another were assigned to 108Y isotope. (Q=charge state)

2011Ni01: 108Y 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 105Y 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 108Y 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: 108Y 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 108Y 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 108Y 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

Other:

1995CzZZ: preliminary report suggesting formation of 108Y (figure 2 in 1995CzZZ) produced in 208Pb(U,F) reaction at E=750 MeV/nucleon; on-line fragment separator at GSI; time of flight and energy loss technique. However, this isotope was not listed in authors’ later publications of the same or similar studies: 1997Be70 and 1997Be12. This would suggest that identification of 108Y was probably uncertain in this study

2013Fa05: calculated half-life, delayed neutron emission probability

Q-value: Q(α) from 1997Mo25; Q(β-, S(n), S(p) from 2012Wa38

Q-value: Estimated uncertainties (2012Wa38): 720 for Q(β-), 780 for S(n); 920 for S(p), 640 for Q(α)

Q-value: S(2n)=7390 780, Q(β-n)=8900 670 (syst,2012Wa38). S(2p)=33620 (theory,1997Mo25)




E(level)
(keV)
T1/2(level)
  0 30 ms 5 
% β- = 100
% β-2n = ?
% β-n = ?

Back to top

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0 30 ms 5 
% β- = 100
% β-2n = ?
% β-n = ?
Measured σ=97 pb (2010Oh02), systematic uncertainty≈40%.

Back to top