Measurements of Resonant Electron Capture in CloseH+-on-H Collisions

摘要: Differential scattering of He/sup +/ ions by He atoms in the energy range 0.4 to 25.0 kev was studied as a function angle between and 4.4 deg . The scattered ion analyzed determine whether it had captured an electron after single collision with target atom. limits both were chosen order that very wide variation velocity impact parameter might be represented data. high angular resolution needed obtaining data at small angles placed severe requirements on beam-defining geometry made precise determinations beam direction necessary. ln addition, spreading low-energy beam, which would have prevented taking angles, observed. use special high-temperature chamber necessary prevent this spreading. Besides electron-capture effects, stripping double capture also studied, ++/ -/ components among particles. For ion-atom combination, is result resonant charge transfer probability observed oscillate when plotted versus incident energy.more » probability, found independent energies, undergo transition such oscillates rapidly angle, low energies. From these data, relationships are used obtain empirical equation fits This first two consecutive papers, second, Everhart, analyzes terms theory capture. (auth)« less