Precise Electromagnetic Tests of Ab Initio Calculations of Light Nuclei: States in
Physical review letters, 2009•APS
In order to test ab initio calculations of light nuclei, we have remeasured lifetimes in Be 10
using the Doppler shift attenuation method (DSAM) following the Li 7 (Li 7, α) Be 10 reaction
at 8 and 10 MeV. The new experiments significantly reduce systematic uncertainties in the
DSAM technique. The J π= 2 1+ state at 3.37 MeV has τ= 205±(5) stat±(7) sys fs
corresponding to a B (E 2↓) of 9.2 (3) e 2 fm 4 in broad agreement with many calculations.
The J π= 2 2+ state at 5.96 MeV was found to have a B (E 2↓) of 0.11 (2) e 2 fm 4 and …
using the Doppler shift attenuation method (DSAM) following the Li 7 (Li 7, α) Be 10 reaction
at 8 and 10 MeV. The new experiments significantly reduce systematic uncertainties in the
DSAM technique. The J π= 2 1+ state at 3.37 MeV has τ= 205±(5) stat±(7) sys fs
corresponding to a B (E 2↓) of 9.2 (3) e 2 fm 4 in broad agreement with many calculations.
The J π= 2 2+ state at 5.96 MeV was found to have a B (E 2↓) of 0.11 (2) e 2 fm 4 and …
In order to test ab initio calculations of light nuclei, we have remeasured lifetimes in using the Doppler shift attenuation method (DSAM) following the reaction at 8 and 10 MeV. The new experiments significantly reduce systematic uncertainties in the DSAM technique. The state at 3.37 MeV has corresponding to a of in broad agreement with many calculations. The state at 5.96 MeV was found to have a of and provides a more discriminating test of nuclear models. New Green’s function Monte Carlo calculations for these states and transitions with a number of Hamiltonians are also reported and compared to experiment.
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