Spin Assignments to Highly Excited States inMg24from Triple-Correlation Measurements

Identification of theIπ=10+Yrast Rotational State inWiedenhöver1, Wuosmaa2, Janssens3 et al. 2001Phys. Rev. Lett.21130View full textAdd to dashboardCite

“…This difficulty can be overcome by detecting the direction of the subsequent 20 Ne, 2 1 ! 0 1 g ray [8,9]. This restores coherence to the 2 1 m-substate population and reestablishes the characteristic oscillatory patterns of the a 1 angular distributions.…”

“…The validity of this new formalism has been thoroughly tested using known 24 Mg states [8][9][10] feeding the 20 Ne 2 1 level. This is illustrated in Fig.…”

High-spin spectrum of24Mg studied through multiparticle angular correlations

“…This is attributable to the limits in kinematic acceptance of the respective setups. The spectrum obtained from experiment A, however, displays a good overlap with earlier experiments in the lower excitation regions [6,8,9]. The closest match to the conditions of experiment B is found in the work of Kelly et al [19], where the α particles from the same reaction were observed at forward angles, but at a lower beam energy The detailed excitation function measurement of Becara et al [20] lists the strongest states expected for the present beam energy as 16.60, 17.20, 19.22, 20.25, and 21.35 MeV, in close correspondence with the levels observed in experiment B (see also Fig.…”

“…We are including a 16.5-MeV level of angular momentum 9 − , which was not observed in our experiments, but was proposed in a 8 + ,9 − assignment to the 16.5-MeV doublet structure of Ref. [6].…”

“…The first examples of multiparticle angular correlation studies were described in Refs. [6][7][8], where the detection of a γ ray in coincidence with an α particle was shown to restore the characteristic high-L oscillatory patterns in the α angular distributions. All conclusive spin assignments to the α-decaying high-spin states in 24 Mg originate in measurements of this type [6,8,9].…”