OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 54, Iss. 4 — Apr. 1, 1964
  • pp: 492–497

Study of the Mechanism of Sulfur Sensitization by a Development-Center Technique

H. E. SPENCER, L. E. BRADY, and J. F. HAMILTON  »View Author Affiliations


JOSA, Vol. 54, Issue 4, pp. 492-497 (1964)
http://dx.doi.org/10.1364/JOSA.54.000492


View Full Text Article

Acrobat PDF (812 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

An investigation has been made of the distribution of development centers among the grains of a simple experimental emulsion and of the influence of sulfur sensitization on this distribution. The distribution of image centers among the grains which have not been deliberately chemically sensitized is not random, but shows instead a strong preference for only one center per grain, regardless of the intensity of the exposing light. For low-intensity exposure, the same emulsion after sulfur sensitization still shows only one development center per grain. At higher intensities, the number of development centers increases. The transition in the distribution of centers in the sensitized emulsion coincides with the onset of high-intensity, reciprocity-law failure. At very high intensity, the observed distribution agrees with the Poisson formula for a random distribution. Latensification with a gold solution, which eliminates high-intensity, reciprocity-law failure, does not affect the form of the speck distribution. This difference resulting from sulfur sensitization is most easily explained in terms of an increase in stability at the sites where latent-image centers form, e.g., an increase in electron trap depth.

Although the emulsion does not solarize, an examination of the development centers reveals that prolonged, low-intensity exposure of the sulfur-sensitized emulsion causes regression of all but one center per grain.

Citation
H. E. SPENCER, L. E. BRADY, and J. F. HAMILTON, "Study of the Mechanism of Sulfur Sensitization by a Development-Center Technique," J. Opt. Soc. Am. 54, 492-497 (1964)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-54-4-492

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited