| 摘要 |
<p>Provided are: a charge exchanger with highly efficient exchange from negative ions to positive ions, a long life, and a simple structure; and a tandem accelerator using same. A low energy-side accelerator tube that electrostatically accelerates negative ions (D-) pulled out from an ion source (2), a charge exchanger that converts incident negative ions (D-) to positive ions (D+), and a high energy-side accelerator tube that again electrostatically accelerates the converted positive ions (D+) are housed, in that order, inside a pressure tank in the tandem accelerator. The charge exchanger comprises a plurality of plates (61) made from a high-fusion point metal arranged in parallel at prescribed intervals. The plurality of plates (61) have a smooth surface on one surface (61S), and each plate is arranged such that said surface (61S) forms an angle of 10° or less with the incident direction of the negative ions (D-). The negative ions (D-) are reflected by said surface (61S) of each plate (6) and are converted into positive ions (D+).</p> |
