ADOPTED LEVELS for 115Mo

Author: Balraj Singh |  Citation: ENSDF |  Cutoff date: 20-Jul-2015 

Author: Jean Blachot |  Citation: Nucl. Data Sheets 113, 2391 (2012) |  Cutoff date: 1-Sep-2012 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=11160 keV SYS(n)= 3010 keV SYS(p)= 16650 keV SYQ(α)= -9610 keV SY
Reference: 2012WA38

General Comments:

2010Oh02: 115Mo 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 115Mo 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, 933 counts were assigned to 115Mo isotope. (Q=charge state)

2011Ni01: 115Mo 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 115Mo 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 115Mo 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: 115Mo 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 115Mo 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 115Mo 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

1995CzZZ: preliminary report suggesting formation of 115Mo (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 115Mo was probably uncertain in this study

2013Fa05: theoretical calculations of T1/2 and %β-n

Q-value: Estimated uncertainties (2012Wa38): ΔQ(β-)=450, ΔS(n)=500, ΔS(p)=640, ΔQ(α)=810

Q-value: Q(β-n)=5950 410, S(2n)=8120 500 (syst,2012Wa38). S(2p)=31950 (theory,1997Mo25)




E(level)
(keV)
T1/2(level)
  0 45.5 ms 20 
% β- = 100
% β-n = ?
% β-2n = ?

Back to top

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0 45.5 ms 20 
% β- = 100
% β-n = ?
% β-2n = ?
Measured σ=1150 pb (2010Oh02), systematic uncertainty≈40%. $ Probability of misidentification of 115Mo isotope<0.001% (2010Oh02).

Back to top