Low energy deuteron-induced reactions on Fe isotopes
Low energy deuteron-induced reactions on Fe isotopes
复制标题
DOI：
10.1103/physrevc.89.044613
复制
发表时间：
2014-04-24
影响因子：
3.1
通讯作者：
Zavorka, L.
中科院分区：
文献类型：
--
作者：
Avrigeanu, M.;Avrigeanu, V.;Zavorka, L.
在20 MeV以下的氘能下，测量了天然铁与氘反应生成Cr-51，Mn-52，Mn-54，Mn-56，Fe-59和Co-55，Co-56，Co-57，Co-58放射性同位素的活化截面。然后，在扩展的分析与Fe-nat的氘核相互作用，从弹性散射的所有过程，直到从完全平衡的化合物系统的蒸发已被考虑在内。在现有的弹性散射数据分析，支持反应截面计算的氘核光学势，特别是分裂（BU）机制和直接反应（DR）的关注增加。氘核活化截面分析是通过考虑预平衡和化合物核的贡献来完成的，并对由于初始氘核通量向BU和DR过程泄漏而导致的总反应截面的减小进行了校正。测量数据和模型计算的总体协议验证了考虑到的核机制的描述，特别是直接相互作用的强烈影响，仍然没有适当考虑在以前的氘核活化评估。
The activation cross sections for production of Cr-51, Mn-52,Mn-54,Mn-56, Fe-59, and Co-55,Co-56,Co-57,Co-58 radioisotopes in deuteron-induced reactions on natural Fe were measured at deuteron energies up to 20 MeV. Then, within an extended analysis of deuteron interactions with Fe-nat, all processes from elastic scattering until the evaporation from fully equilibrated compound system have been taken into account. Following the available elastic-scattering data analysis that supports the deuteron optical potential for reaction cross sections calculations, increased attention is paid especially to the breakup (BU) mechanism and direct reactions (DR). The deuteron activation cross-section analysis is completed by consideration of the preequilibrium and compound-nucleus contributions, corrected for decrease of the total reaction cross section due to the leakage of the initial deuteron flux towards BU and DR processes. The overall agreement of the measured data and model calculations validates the description of nuclear mechanisms taken into account, particularly the strong effects of direct interactions that have still not been appropriately considered within previous deuteron activation evaluations.