RF synchronized short pulse laser ion source.

A laser ion source that produces shortly bunched ion beam is proposed. In this ion source, ions are extracted immediately after the generation of laser plasma by an ultra-short pulse laser before its diffusion. The ions can be injected into radio frequency (RF) accelerating bucket of a subsequent accelerator.

Compact permanent magnet H⁺ ECR ion source with pulse gas valve.

Compact H(+) ECR ion source using permanent magnets is under development. Switching the hydrogen gas flow in pulse operations can reduce the gas loads to vacuum evacuation systems. A specially designed piezo gas valve chops the gas flow quickly.

An awareness survey of surgeons involved in breast cancer treatment regarding their patients returning to work.

Surgeons focus on the period of absence from work during the initial treatment of breast cancer. The aim of this study was to determine surgeons' perceptions and awareness regarding the necessary period of absence from work during breast cancer treatment. We created a questionnaire for all surgeons involved in breast cancer treatment who are affiliated with the Department of Surgery at the Nagoya University Graduate School of Medicine and its associated facilities.

Analyses of the plasma generated by laser irradiation on sputtered target for determination of the thickness used for plasma generation.

In Brookhaven National Laboratory, laser ion source has been developed to provide heavy ion beams by using plasma generation with 1064 nm Nd:YAG laser irradiation onto solid targets. The laser energy is transferred to the target material and creates a crater on the surface. However, only the partial material can be turned into plasma state and the other portion is considered to be just vaporized.

Comparison of graphite materials for targets of laser ion source.

To investigate efficient graphite material for carbon ion production in laser ion source, the plasma properties produced from these materials are measured. Comparing acquired current profile and charge state distribution, the distributions of ions in laser induced plasma from isotropic graphite and single crystal of graphite are different. The produced quantity of C(6+) from isotropic materials is larger than that from single crystal.