论文标题
NE-20与AU-197和HO-165在E = 14.9 x AMEV的完整和不完全融合反应中的蒸发残留物产生
Evaporation Residue Production in Complete and Incomplete Fusion Reactions of Ne-20 with Au-197 and Ho-165 at E = 14.9 x AMeV
论文作者
论文摘要
在速度滤船船上测量了沉重残留物（A_RES> A_TAR）的速度分布（A_RES> A_TAR），在E = 208 MEV的轰击能量中产生，Ne-20，NE-20在E = 208 MEV的轰炸能量下产生。对于NE-20 + HO-165的产品，获得的平均值为v_cn = 0.91 + -0.01，单个残留物，归因于Astatine和Polonium的同位素，质量数从A = 195到A = 203不等，可以通过Alpha-comparproscopy in bombarpospopy in Bomkardments AU-19 au-19。随着残基质量减少，平均速度从v/v_cn = 0.85 = 0.93的线性增加。这种作用归因于预平衡颗粒发射对重物残留物产生的贡献。定量估计导致平衡过程对astatine同位素产生的贡献为90％，对polonium同位素的贡献为50％。
Velocity distributions of heavy residues (A_Res > A_Tar), produced in irradiations of Au-197 and Ho-165 with Ne-20 at bombarding energies of E = 208 MeV, have been measured at the velocity filter SHIP. While for the products from Ne-20 + Ho-165 just a mean value of v/v_CN = 0.91+-0.01 was obtained, individual residues, attributed to isotopes of astatine and polonium with mass numbers ranging from A=195 to A=203 could be identified by means of alpha - spectroscopy in the bombardments Au-197. A linear increase of the mean velocity from v/v_CN = 0.85 to v/v_CN = 0.93 with decreasing residue mass was observed. This effect was attributed to an increasing contribution of pre-equilibrium particle emission to the production of heavy residues. A quantititative estimation resulted in a 90 % contribution of pre-equilibrium processes to the production of astatine isotopes, and a 50 % contribution to the polonium isotopes.
