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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 57, Iss. 4 — Apr. 1, 1967
  • pp: 542_1–543

Optics InfoBase > JOSA > Volume 57 > Issue 4 > Page 542_1

Work-Function Estimation with a Single Yield Measurement*

M. C. TEICH and G. J. WOLGA  »View Author Affiliations

JOSA, Vol. 57, Issue 4, pp. 542_1-543 (1967)

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M. C. TEICH and G. J. WOLGA, "Work-Function Estimation with a Single Yield Measurement*," J. Opt. Soc. Am. 57, 542_1-543 (1967)

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  1. R. H. Fowler, Phys. Rev. 38, 45 (1931).
  2. M. C. Teich, J. M. Schroeer, and G. J. Wolga, Phys. Rev. Letters 13, 611 (1964); M. C. Teich, Two Quantum Photoemnission and dc Photoinixing in Sodium, Ph.D. Thesis, Cornell University, February 1966.
  3. R. J. Maurer in Handbook of Physics, edited by E. U. Condon and H. Odishaw (McGraw-Hill Book Co., New York, 1958), p. 8–67.
  4. R. J. Maurer, Phys. Rev. 57, 653 (1940).
  5. In fact, for incident radiation at 6328 Å, the single quantum contribution to the photocurrent from the Fermi tail was so large that it precluded observation of a double-quantum current. In this case, the current from the photocathode was measured directly.
  6. If a volume effect is responsible for the transitions, however, then for film thicknesses below a critical thickness dcrit, α depends on the thickness of the film [see H. Thomas, Z. Physik 147, 395 (1957)]. That is, below dcrit (which is the depth of photoemission), α will increase approximately linearly with film thickness, corresponding to the amount of sample emitting. This effect is neglected.
  7. H. Mayer and H. Thomas, Z. Physik 147, 419 (1957).
  8. A. Meessen, J. Phys. Radium 22, 308 (1961).
  9. For example, α(Na)≃4×10-32 cm2-sec/quantum while α(Ba)≃2×10-32 cm2-sec/quantum (see Ref. 4).

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