Articles you may be interested inEnergy deposition measurements of a largediameter, intense relativistic electron beam for high power gas laser excitation Rev. Sci. Instrum. 55, 472 (1984); Abstract: Production system for ion milling with a largediameter ion beam J. Vac. Sci. Technol. 15, 789 (1978); 10.1116/1.569710Probing of surface acoustic wave devices with largediameter laser beam Experimental tests of a method for injection of large-diameter, intense positive ion beams into low-density gases are described. 20-keV, 15-mA beams are projected through a supersonic annular gas nozzle which furnished a large aperture (3.18cm diam), while providing differential pumping to allow up to 30 mTorr pressure in the collision chamber. Calorimetrically measured attenuations of large argon and helium ion beams in several gases are given and compared with similar data for small-aperture beams. Possible extensions of the method are discussed.
that the only terms retained in V are ones withj represented, = f dT[ 1: (X.X/Vi.XiX:+X.X/Vi.x/x.)].
J' evenThe second sum on the right evidently involves the ground-state permanent moment of the 11th molecule interacting with the rs transition moment of the jthmediated by the appropriate trigonometric factor. The corresponding reduction of (cpo' I V I CPu') is the same except that II is odd. The transition moment correction 23 23 The full first-order correction contains a sum over s as well as terms involving larger denominators. 19.7
A method of spatially analyzing a positive ion beam by electrostatic means is presented. In this method, a small portion of a given ion beam passes through a low-density gas-filled chamber, where ionization and charge exchange products are collected and analyzed so as to reveal the original positive and neutral beam components. Results of a detailed spatial analysis of a 10-keV argon ion beam from a Von Ardenne duoplasmatron ion source are given and discussed. Comparison of integrated beam components with theoretical beam ``blowup'' indicates that microscopic and macroscopic neutralizations are the same within limits of the measurements.
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