1. D. Hartman, C. Y. Fan, M. P. Gough, K. E. Turver, and T. C. Weekes (unpublished).
2. Linearity of tube response can be affected by this arrangement, especially in the dc mode. Because the last three dynodes are essentially at the same potential as the collecting electrode (dynode 11), electrons entering this region of the tube dynode structure may either be collected by dynode eleven and constitute the signal current or be collected by some of the grounded dynodes. However, it may be possible that the use of a long inductive lead for the “grounding” of the last three dynodes would not produce this effect when detecting fast light pulses. The author is indebted to the referee who kindly pointed out this effect.
3. G. H. Rieke (private communication, 1969).
4. RCA Phototube Manual, Technical Series PT-61, RCA Corporation (1970).
5. N. Carleton,Methods of Experimental Physics(Academic, New York, 1974), Vol. 12.