INVESTIGATION OF THE PHOTOELECTRIC WORK FUNCTION OF TITANIUM
Abstract
Measurements were made at several cathode temperatures (T) of t he emission current (I) received from photocells with pure Ti cathodes, upon their exposure to monochromatic ultraviolet light from a G.E. A-H6 high-pressure Hg- arc lamp. The frequency (nu) of the incident light varied from 2800 to 2450 A, and cathode temperature ranged from room temperature to 571 deg K. The photoelectric work function (phi) was obtained graphically from the Fowler (Phys. Rev. 38:45 and 838, 1931) expression log(I/T squared) = B + log f(x), where B is a constant independent of nu and T, and x = (h nu - phi)/kT, where h and k are the Planck and Boltzmann constants. Construction of the phototubes is described, one with a cylindrical and the other with a plane Ti cathode. Results indicated that phi for pure Ti is si 4.11 v. and that contamination of a Ti cathode may produce an increase or decrease in phi; the change is dependent upon the type and amount of contamination.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1952
- Accession Number
- AD0001286
Entities
People
- Pio H. Dalle Mura
Organizations
- Princeton University