Author: C. D. Nesaraja |  Citation: Nucl. Data Sheets 125, 395 (2015) |  Cutoff date: 31-Mar-2014 

 Full ENSDF file | Adopted Levels (PDF version) 

Q(β-)=1620 keV SYS(n)= 5910 keV SYS(p)= 5530 keV SYQ(α)= 4850 keV SY
Reference: 2012WA38

General Comments:


1983Po14: Pu irradiated with neutron followed by chemical extraction and measured by semiconductor γ spectrometry

1967Or02,1968Fi03: 244Pu irradiated with α, followed by chemical extraction and measured γ-rays with Ge(Li) detector

Experimental work:

1987We01: Measured 248Cm(129Xe,X) and 248Cm(132Xe,X) production cross-sections

1974Ba73: Measured 248Cm(t,αF) at E=16 MeV.

Measured α singles and α-fission product coincidence spectra. α measured with ΔE-E counter telescope with energy resolution of 145 keV and the fission fragments were measured with fission detector. By using a statistical model, heights and curvatures for the peaks of double-humped fission barrier were deduced.

1968Fi03: Measured 244Pu(α,p) at E(α)=42 MeV from Argonne 60-inch cyclotron. 227- and 285-keV γ-rays assigned to 247Am

1967Or02: Measured 244Pu(α,p) at E(α)=24 MeV. Measured T1/2 from the decay of the 226- and 285-keV γ’s

Theoretical studies:

2004Pa40: Calculated deformation parameters and the proton one quasiparticle states of heaviest nuclei using the macroscopic-microscopic approach

2002Du16: Calculated partial half-lives for α and cluster decays

2001YaZU: Calculated fission barrier with semimicroscopic model with account of possible dependence on excitation energy

1997Mo25: Calculated ground-state binding energy, proton and neutron pairing gaps, neutron and proton separation energies, Q values and partial half-lives for α and β decays

1995Mo29: Calculated ground-state masses and nuclear ground-state deformations

1988Po04: Estimated nuclear mass excess using a semiempirical method

1981Mo24: Calculated ground-state electric multipole moments Q2, Q4 and masses

1985Lo17: Ground-state spin and parity predicted on the basis on the calculated Nilsson potential parameters.

1984Ku05, : Calculated fission barrier with statistical approach and the two hump fission barrier model

1981Mo24: Calculated ground-state electric multipole moments Q2, Q4 and masses

1980Ku14: Quantitative description of the main characteristics of the fission probability using a simple phenomenological model.

1980Ho32: Calculated mass excess, S(n), S(p), Q(β), Q(α), fission-barrier heights, deformation and energy at saddle-point

Q-value: ΔQ(β-)=100, ΔS(n)=100, ΔS(p)=100, ΔQ(α)=110 (syst, 2012Wa38)

Jπ(level) T1/2(level)
  0.0 (5/2) 23.0 m 13 
% β- = 100

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Additional Level Data and Comments:


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