No.6（2003）11.Determination of hydrogen atom by ion beam

Masaru NAKAMURA

An HVEE 1.7MV Tandetron accelerator (Model HV4117HC) equipped with a negative sputter ion source (Model 860A) and a duoplasmatron ion source (Model 358) was employed for determination of hydrogen atom; particle elastic scattering analysis (PESA) and elastic recoil detection analysis (ERDA). An EG&G Ortec model TU-012-50-100 ion-implanted-silicon charge-particle detector with a resolution of 12keV at 5.486MeV alphas for ²⁴¹Am to collect scattering and recoil particles was set in ion beam analysis chamber. This detector faced the target at an angle of 30° to the beam direction.　For ERDA, typical incident beam energy and beam current were 4MeV He²⁺ and 3nA. For PESA, that energy and current were 3MeV proton and 3nA. Polycarbonate filter sample gave detection limits in the 0.6% for ERDA and 0.2% for PESA. In the case of using for proton beam, PESA provided data for hydrogen while another technique, RBS and PIXE, supplied information on elements heavier than helium. Thus, the ion beam analysis provided data for carbon and elements from hydrogen to uranium.

Keywords
Hydrogen atom, Ion beam, Accelerator, ERDA, PESA

Back to Contents