Research On Spectra Of Highly Ionized Titanium

There is much motivation for the study of highly ionized atoms. First of all, the spectroscopic studies on the highly ionized atoms is involved in physics of accelerator, quantum electrodynamics, molecular physics, solid state physics and detector technology etc. Second, it's very significant for studies on astrophysics, plasma physics, energy sciences, material sciences, life sciences and defense sciences. As the basis of spectroscopy, it is obviously very important to provide high precision metrology of spectroscopic data so as to get the structural information of the highly ionized atoms.Before the beam foil spectroscopy (BFS) and highly ionized ion sources came into forth, the investigations of traditional spectroscopy of atoms are often focused on the lower ionized atoms. The scantly spectroscopic data of highly ionized atoms merely come from plasma source, on the other hand, electrons striped from atoms is still fewer. Along with the development of BFS and ion sources, the spectra of any element could be obtained by interactions between ions with suitable energy and foil. Although the spectra of hydrogen-like, helium-like and lithium-like uranium had been investigated in Berkeley, Caen and Darmstadt, there are still a large number of spectroscopic experiments to be performed with mid-Z elements.There is few experiment performed with high energy titanium because of the limitations come from accelerators and ion sources. Few spectroscopic data were obtained and almost all the data came from laser-produced plasma technology. It's very important to provide the spectroscopic data from accelerator based atomic physics especially the data of the highly ionized atoms. Because it's very useful, not only for the perfection of database of atoms, but also for the reliability of spectroscopic data come from plasma experiment.The spectra of highly ionized titanium with 80MeV and 120MeV energy were studied by means of BFS. The experiment was performed on HI—13 tandem accelerator at China Institute of Atomic Energy. The beam foil spectra were recorded by the 2.2 meter GIM-957 grazing incidence VUV (Violet to Ultra-violet) to soft X-ray monochromator with a 600 lines/mm grating and a channeltron detector. The incidence slit of spectrometer is closed to beam (about 7mm) and its width was set at about 90μm. Intensity of beam current was about 80nA. A 25μg/cm2 thick carbon foil was set up in chamber.The spectral emission lines have been observed and classified, and mainly from Be-like B-like Olike and N-like titanium. Higher stripped ions have not been found because of the lower efficiency of spectrometer and detector within the region of soft X-ray.There are a number of spectral lines observed both by beam foil technology and by plasma technology when we analyzed the data from the two techniques...