2011/01/14 by Kazuyuki Ogata, Ogata, Kazuyuki, Shintaro Hashimoto +3
Medicine · Physics and Astronomy · #Atomic and Molecular Physics #FOS: Physical sciences #Nuclear Theory (nucl-th) #Nuclear physics research studies #Radiation Therapy and Dosimetry #nucl-th
paper · pdf · doi:10.48550/arxiv.1101.2732
8 pages, 7 figures
arxiv created 2011/01/14 · openalex publication_date 2011/01/14 · arxiv updated 2011/01/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The differential cross sections of two-nucleon transfer reactions 238U(18O,16O)240U around 10 MeV per nucleon are calculated by one-step Born-approximation with a 16O+2n+238U three-body model. The three-body wave function in the initial channel is obtained with the continuum-discretized coupled-channels method, and that in the final channel is evaluated with adiabatic approximation. The resulting cross sections have a peak around the grazing angle, and the spin distribution, i.e., the cross section at the peak as a function of the transferred spin, is investigated. The shape of the spin distribution is found not sensitive to the incident energies, optical potentials, and treatment of the breakup channels both in the initial and final states, while it depends on the excitation energy of the residual nucleus 240U. The peak of the spin distribution moves to the large-spin direction as the excitation energy increases. To fulfill the condition that the peak position should not exceeds 10 hbar, which is necessary for the surrogate ratio method to work, it is concluded that the excitation energy of 240U must be less than 10 MeV.