The Research Of The Deposition Of The Highly Charged Ions On The Solid Surface And The Kinetic Energy Of The Ions Sputtering From The Solid Surface

Recently,the highly charged ions(HCIs) source,surface probing technique,ultra high vacuum and other experiment settings have been developed very quickly.Those can provide good conditions for the interactions of HCIs with solid.When the HCIs approach the solid surface,they will not only induce the emission of different secondary particles,such as electrons,atoms,ions,but also strongly modify the solid surface in nano-scale.The interactions of slow HCIs with solid just modify the solid surface structure,without destroying structures in solid.In this paper,we have observed nano-dots when highly charged argon ions impact on highly oriented pyrolytic graphite(HOPG).By statistical analysis to the nano-dots,average values of nano-dots size and height for each type of projectiles can be acquired.Both kinetic energy and potential energy of HCIs contribute to nano-dots formation.The Coulomb explosion model is applied to interpret the interaction mechanism between the HCIs and the solid targets and to obtain the deposited energy.The ratios of HCIs' deposited energy to potential energy are different when different HCIs impact the different targets.The kinetic energies of deuterons are calculated as a function of deposited energy(E_c) and other parameters of the targets as long as the ratios of HCIs' deposited energy to the total potential energy were known.The secondary particles are relative to the properties of the HCIs and the targets.The relationships between the energy of the secondary particles and the parameters of the targets and the HCIs are expected to know.The maximal kinetic energy of deuterons sputtered from some targets is above 10 keV.The cross-section of D-D reaction is large enough to induce the continuous fusion while the energy of deuteron is 10 keV.So,the fusion reaction may occur in the condition at room temperature.