Determination of neutron halo radii in the first excited states ofC13andBe11with th

Abstract

An analysis of the differential cross sections of the l2C (d ,p )13C (ground state, org.s., 1 /2J) and inBe(c/,/?)"Be (g.s., 1 /2, ) reactions at the incident deuteron energies of 11.8, 25.9, and 30 MeV for the first system, and 12.0 and 25.0 MeV for the second system has been performed by applying the coupled-reaction-channels method. The spectroscopic factors 5cxpI, asymptotic normalization coefficients (ANCs), and rms radii of the last neutron in the ground states and the first excited states of the stable l3C and the radioactive "B e nuclei were extracted. The existence of neutron halos in the first excited state of 13C and the ground state of "B e is confirmed. The rms radii of halos in these states were found to be 5.72 ± 0.16 and 8.0 ± 0.2 fm, respectively, in agreement with experimental results. We showed that a halo is also formed in the 0.32 MeV

Neutron halos in the excited states of B12

“…The existence of neutron halos in these states is not only of certain astrophysical interest [18], but also has significance for the problem of appearance of halos as a whole. Application of the ANC theory [19][20][21][22][23] to peripheral reactions on light nuclei is especially adequate for determining the radii of halos [17,24]. In actual practice, the ANC theory is widely used to obtain spectroscopic and astrophysical information [25][26][27][28][29].…”

Nuclear States with Abnormal Radii

“…Our recent studies [8] allowed performing a critical test of all three models by determining the radius of the 3.09-MeV 1/2 …”

Neutron Halos in Excited States of 12B

“…[1] and references therein). The existence ICPPA 2017 of neutron halos in the short-lived excited states of some stable and radioactive nuclei was revealed, in particular, by the ANC analysis of the neutron-transfer reactions [2][3][4].…”