Anomalous Phenomena in E<18 keV Hydrogen Ion Beam Implantation Experiments on Pd and Ti

• 来源期刊: 原子核物理：英文版
• 学科: 物理学
• 关键词: HYDROGEN ion beam Low energy IMPLANTATION PALLADIUM and titanium FOILS
• 年，卷（期）: 1997,（4）
• 页码范围: 244-249
• 页数: 6页
• 分类号: O4

摘要

【正】 Implantation experiments of low energy（1 keV【E【18 keV）hydrogen ion beamson hydrogen loaded metals are performed with high beam density(J_max1.2 mA/cm²)and lowbeam density(J_min0.02 mA/cm²).Palladium and titanium foils（plates）are bombarded withproton and deuteron beams in order to compare the atomic and nuclear interactions between dif-ferent ion beams.X-ray and charged particles are measured,and neutron and gamma doses arealso monitored during the implantation experiments.An anomalous peak in X-spectra,whoseenergy is about four times the beam energy,is observed during the high beam density experi-ment.The peak moves from about 40 keV to 62 keV and FWHM reduces rapidly,while thebeam energy and intensity increase.Another wide peak with over twice the beam energy is mea-sured in experiment with low beam density.It is located between 16 keV and 30 keV,and itspeak energy increases with the increase of implantation dose（implantation time）.Some anoma-lous intensities of neutrons correlated with a charged particle peak（2.93,3.85 MeV）are alsoobserved in the deuteron-palladium experiment.The highest neutron intensity reaches about8×10⁴ n/s,while the beam energy and intensity are about 15 keV and 1.0 mA,respectively.