Preciseγ-ray intensity measurements in10B

Microscopic clustering in light nuclei

“…The reproduction of the experimental results, especially the GFMC calculations, was not satisfactory and showed significant sensitivity to the details of the 2-and 3-body forces employed. A subsequent measurement of the B(E2) for the transition from the J = 2, T = 1 state at 5.164 MeV to the J = 0, T = 1 state at 1.740 MeV in 10 B found a value of 6.1(22) e 2 fm 4 (McCutchan et al, 2012b). This is much lower than the simple average of the 10 Be and 10 C measurement, which may not simply be understood and stands as an important test of ab initio theory.…”

Renewed Interest in Spectroscopy of the Lightest Doubly-Odd N = Z Nuclei

“…The 3423.1-keV, 2 + 2,T=1 → 1 + 0,T=1 , γ-ray transition has been measured in several experiments (see Table 2). Recently, McCutchan et al placed a limit of 0.16(4)% on this γ-ray branch by using the 10 B(p,p γ) 10 B reaction [47]. This work reports so far the most precise result related to the weak γ-ray branches in 10 B.…”

“…The γ decay of the partically bound states in 10 B was measured in a number of experiments [41][42][43][44][45][46][47]. The results are summarized in Table 1 and demonstrate a considerable spread between the different measurements.…”

“…The results are summarized in Table 1 and demonstrate a considerable spread between the different measurements. The γ-decay data for the unbound 5163.9-keV, T = 1, J π = 2 + state are summarized in Table 2 [47][48][49][50][51][52]. Most of the reported measurements have uncertainties between ∼10% and ∼25%, which necessitates new, precise measurements of the reported weak branches, especially such as the reported uncertain (M3) transition between the IAS and the gs, the reported E2 transition between the 3587.13-keV state and the IAS, and the E2 transition between the 5163.9-keV level and the IAS (see Tables 1 and 2).…”

“…The first precise measurements using the Doppler shift attenuation method (DSAM) of the half-lives of electromagnetic transitions in 10 Be and 10 C were carried out [60,61]. The partial γ-decay branch of the (J π = 2 + , T = 1, 5163.9 keV) → (J π = 0 + , T = 1, 1740.05 keV) isoscalar transition was measured as 0.16(4)% [47]. Further, the α-decay branching ratio for the 5163.9-keV, J π = 2 + , T = 1 was addressed [13].…”