[en] With the commissioning of HIRFL-CSR, HIRFL can provide heavy ion beams with energy covering the range of several MeV/u to 1 GeV/u. In this talk, the experiments on nuclear physics at different energies to be carried out with different experimental setups at HIRFL will be introduced.

[en] The ultraviolet optical transition of the isomeric state in "2"2"9Th has attracted much attention recently due to its potential application to building an atomic/nuclear clock with ultra-high precision. However, the lowest nuclear excitation energy and the lifetime of the first excited state of "2"2"9Th were not measured directly and precisely until now, and how to precisely determine this isomer state of the "2"2"9Th is an urgent requirement. Here an experimental approach of using a technique similar to that of dielectronic recombination to measure the transition energy of the isomer state of "2"2"9Th at heavy ion storage rings is described. It is expected that the resonant transition can be found and determined with a precision better than several milli-eV. (paper)

[en] The transmission of Xe¹⁰⁺ ions, with incident kinetic energies of 200–500 keV, through polycarbonate capillaries, with a diameter of 150 nm and a length of 30 μm, has been studied using a one-dimensional position sensitive detector. The transmitted ion yields were measured as a function of the tilt angle. The results are used to evaluate the guiding angle, which is a measure of the guiding power specifying the capability of insulating capillaries to guide ions at equilibrium. Following the semi-empirical scaling law, the potential in the entrance region in this work is nearly an order of magnitude larger than that proposed by low energy data. (paper)

[en] The transmission of 200 keV H⁺₂ ions through tapered capillaries with inlet/outlet diameters of 4 μm/2 μm and a length of 30 μm is reported. The results indicate that 200 keV H⁺₂ ions can be guided through foils tilted up to ±12.5°. The areal density of the transmitted ion beam is estimated to be ∼3.7 times larger than that of incident beam

[en] The SHANS spectrometer is under construction in the Institute of Modern Physics, Chinese Academy of Science. The RFQ cooler and buncher RFQ1L is one of the key devices in the SHANS. To perform direct mass measurement, the Lanzhou Penning Trap LPT is also under construction. In this symposium, the principle of the SHANS, the status of RFQ1L and LPT and some primary test results will be reported.

[en] Experiments on nanostructure formation on highly oriented pyrolytic graphite (HOPG) surfaces irradiated by slow highly charged Xe^q+ (q = 23-29) ions have been carried out at a new experimental terminal for surface physics on the 320 kV ECR platform at the Institute of Modern Physics (IMP). In the tapping mode atomic force microscope (AFM) image, the nano-sized hillocks protruding from the surfaces are probed. The height and diameter of the nanostructures increase with the projectile charge state. The present results reveal a similarity between the nanostructure formation produced by slow highly charged ions and the track formation induced by swift heavy ions.

[en] Transmission of H⁺₂ ions through tapered capillaries in insulating polycarbonate (PC) foil is reported. Guiding, focusing effects and multi-peaks phenomena on ions through capillaries have been studied

[en] Experiments for guiding of Xe⁷⁺ ions through nanocapillaries in insulating polycarbonate (PC) foil with a thickness of 30μm and a diameter of 150 nm are reported. The total yield of the transmitted ions was measured as a function of the capillary tilt angle. Moreover, we tested the influence of charged back-side, incident current and incident energy of ions through capillaries. The present results are discussed within the models for the guiding effect.

[en] For impact of very slow highly charged ions on single crystal surfaces the appearance of hillocks can be linked to a threshold in potential energy while for swift heavy ions a minimum electronic energy loss per unit length is necessary. Recent investigations on CaF_2 in the medium energy range bridge the gap between these two extreme cases. These investigations are now extended to other target materials. (paper)

[en] Recent results and progress of mass measurements of proton-rich nuclei using isochronous mass spectrometry (IMS) are reported. The nuclei under investigation were produced via fragmentation of relativistic energy heavy ions of ⁷⁸Kr and ⁵⁸Ni. After in-flight separation by the fragment separator RIBLL-2, the nuclei were injected and stored in the experimental storage ring CSRe, and their masses were determined from measurements of the revolution times. The impact of these measurements on the stellar nucleosynthesis in the rp-process is discussed.