2342 高エネルギー分子線源としての超小型衝撃波管の開発(S46-3 圧縮性流れの基礎と応用(衝撃波1),S46 圧縮性流れの基礎と応用)  [in Japanese] 2342 DEVELOPMENT OF ULTRA SMALL SHOCK TUBE FOR HIGH ENERGY MOLECULAR BEAM SOURCE  [in Japanese]

High energy molecular beam source in the range of 1 to 5 eV is one of the most important tools to explore gas-surface interaction involving chemical reaction. Although the seeded beam and the arc-heated beam have been employed for such purpose, they have the drawback of the low beam intensity and the generation of undesirable excited species. It is known that the shock heated molecular beam is capable of overcoming these problems. However, the quite low repetition rate less than 1Hz has made practical application difficult in molecular beam scattering experiment so far. In this study, we examine the capability of the small shock tube as a molecular beam source using a current-loop valve and modify it to improve the performance.