Deformation effects in the Coulomb breakup of 31Ne

Abstract

We present a fully quantum mechanical theory to study the effects of deformation on various reaction observables in the Coulomb breakup of neutron rich exotic medium mass nuclei on heavy targets within the framework of finite range distorted wave Born approximation by using a deformed Woods-Saxon potential. As an application of this theory, we calculate the one-neutron removal cross section, relative energy spectra, parallel momentum distributions and angular distributions in the breakup of 31 Ne on Pb and Au targets at 234 MeV/u. We suggest ways to put constraints on the large uncertainty in the one-neutron separation energy of 31 Ne and also argue that if 31 Ne is indeed a halo nucleus then it should be a deformed one.

Determination of the Mg36(n,γ)Mg37 reaction rate from Coulomb dissociation of Shubhchintak1, Chatterjee2, Shyam3 2017Phys. Rev. CSelf Cite

“…However, 18 C and 36 Mg are exceptions to this observation. Both these isotopes are still away from the respective drip lines of the corresponding Z values.…”

“…It is speculated in Ref. [6] that even at low temperatures (around T 9 = 0.62), the rates of 18 C(α, n) 21 O and 36 Mg(α, n) 39 Si reactions could be larger than those of 18 C(n, γ) 19 C and 36 Mg(n, γ) 37 Mg reactions, respectively. To confirm this observation the precise determination of the rates of these reactions is of crucial importance.…”

Structural effects of Na34 in the Na33(n,γ)NaSingh1, Shubhchintak2, Chatterjee3 2017Phys. Rev. CSelf Cite9060View full textAdd to dashboardCite

“…The method we use for CD studies is the FRDWBA which has been advanced to include the effects of deformation on a nucleus [23].…”

“…Here, α, γ and δ are the mass factors according to the Jacobi coordinate system while q's are the Jacobi wave vectors corresponding to the respective nuclei; K is the effective local momentum for the core-target system [23]. The χ's are taken to be pure Coulomb distorted waves whose convolution with the plane wave for particle c in the first integral in Eq.…”

“…The second integral expresses the structure part of the reaction by involving the ground state wave function of the projectile (φ lm a (r 1 )) and the potential, V bc (r 1 ). The deformation is incorporated in our FRDWBA theory via this axially symmetric quadrupole-deformed potential, which is constructed as [23]:…”