Characteristic curves of photographic material used in emulsion chambers

I. Ohta, K. Mizutani, K. Kasahara, T. Kobayashi, E. Mikumo, I. Mito, A. Ohsawa, K. Sato, Shoji Torii, M. Tsujikawa, S. Uchida, T. Yuda, Y. Takahashi

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In order to provide a reliable basis for the photometric method in emulsion chamber experiments, investigations were made on the characteristic curves of X-ray film such as SAKURA type-N and type-RR used in emulsion chambers. Characteristics curves were obtained over a wide density region by irradiating with an electron beam from an electron synchrotron. Comparison of the observed data to theoretical predictions of the one hit model shows a significant difference at high density. A modification of the one hit model is proposed taking into account the size-frequency of sensitive grains in the emulsion and the development effect on the optical density. The curves based on the size-frequency of grains are in agreement with experiment.

Original languageEnglish
Pages (from-to)35-43
Number of pages9
JournalNuclear Instruments and Methods
Issue number1
Publication statusPublished - 1979 Apr 15
Externally publishedYes


ASJC Scopus subject areas

  • Engineering(all)

Cite this

Ohta, I., Mizutani, K., Kasahara, K., Kobayashi, T., Mikumo, E., Mito, I., Ohsawa, A., Sato, K., Torii, S., Tsujikawa, M., Uchida, S., Yuda, T., & Takahashi, Y. (1979). Characteristic curves of photographic material used in emulsion chambers. Nuclear Instruments and Methods, 161(1), 35-43.