Excited States inN14fromC12(d,

Abstract

Excited states in the N'4 nucleus have been observed by measuring the difterential scattering and reaction cross sections of C" (dd)C", C"(d,PO)C", and C~(d, p, )C"~for deuteron bombarding energies from 0.5 to 2.0 Mev. Resonances frere investigated at deuteron bombarding energies of 0.92, 1.19, 1.31, 1. 446, and 1.79 Mev, corresponding to excited states at 11. 05, 11. 29, 11. 39, 11. 503, and 11. 80 Mev in N'. Scattering matrix analysis of the elastically scattered deuterons and of angular distributions of the reaction protons to the ground state of C" gave assignments of 1+, 2, 1+, 3+, and 1+ for these states. The analysis of the C's(d, pa)C" angular distributions at 0.92, 1.19, and 1.31 Mev indicated a reaction mechanism in which the relative proton-neutron spin orientation of the deuteron is preserved.

Simultaneous depth profiling of the 12C and 13C elements in different samples using (d,p) reactions

“…At temperature lower than 370° C (Fig. 1b and 1c) we can observe a very intense contribution of 12 C at the surface while 12 C contamination is strongly reduce when the implantation temperature is 600° C (Fig. 1a).…”

“…The surface contribution ( 12 C surf ) is clearly observed in figure 2b and the areal density of 12 C has been calculated and reported in Table 1. This surface contribution is due to build-up of 12 C during the implantation. The sample implanted at 600° C contains the lowest 12 C contamination.…”

“…The NRA detector at 135° measured protons emitted by 12 absorber. The backscattered deuterons on copper were used as a monitor to measure incident particles [15].…”

“…Consequently these two reactions can be used to depth profile 12 C and 13 C simultaneously. Nevertheless the cross section of 13 C(d,p 0 ) 14 C reaction is ten times smaller than the 12 C(d,p 0 ) 13 C one.…”

Elastic Scattering of Deuterons by Beryllium

“…(16), (18), and (19) may be combined to yield (21) To use Eq. (21) (24) where E 1 expressed in Mev, is the laboratory energy of the incoming particle, z 1 and M 1 are the charge number and mass of the incoming particle, and z 0 and M 0 are the same quantities for the target .…”