Single electron capture and loss by H+, H0 and H- in Cs vapour in the energy range 0.1-2.0 keV

Cross sections for electron capture by H+ and H0 and electron loss by H- in Cs have been measured in the energy range 0.1-2.0 keV. The near-resonant electron capture cross section sigma +0 is larger than 1.0*10-14 cm2 over the whole energy range investigated. The electron loss cross section sigma -0 displays a rather weak energy dependence, changing by less than a factor of two in the energy range 0.2-2.0 keV. The capture cross section sigma 0- is the smallest in magnitude of the three cross sections measured and displays the strongest dependence on energy. Good agreement is found between the present results and previous measurements at higher energy. The measurements are compared with recent calculations of these reactions.