Application of response function to radiography (in Japanese)
Journal Article
·
· Genshiryoku Kogyo, v. 19, no. 6, pp. 49-54
OSTI ID:4328166
Response functions are useful for the analysis of radiography systems for the quantitative evaluation of the transmission of information from objects to be radiographed to images on films. In the gamma radiography, the films are exposed to secondary electrons generated by mutual action of the gamma -rays with lead foil sensitizers, thus a sort of signal transformation is carried out. Accordingly, the response function, in which the radiation penetration characteristics of theobjects to be radiographed and imagereceiving film system using radiation sources of /sup 170/ Tm, /sup 192/Ir, /su p 137/Cs, and /sup 60/ Co, and the optimum lead sensitizers for them are shown. In order to determine the response function of film system, radiation intensity changing sinusoidally is focused on the films, and the sinusoidal density distribution is examined. Another method is to examine the state of the extending images of point or line objects. Moreover, the spectra of radiation sources, the response function of scattered ray from objects to be radiographed, and the radiographed images with / sup 192/Ir source are calculated. The Nitka index, resolution, and unsharpness for evaluating image quality cars be derived by simple mathematical examination, if the response function of a system is known. (JA)
- Research Organization:
- Industrial Research Inst. of Kanagawa Prefecture, Yokohama, Japan
- NSA Number:
- NSA-29-029258
- OSTI ID:
- 4328166
- Journal Information:
- Genshiryoku Kogyo, v. 19, no. 6, pp. 49-54, Journal Name: Genshiryoku Kogyo, v. 19, no. 6, pp. 49-54; ISSN GKOGA
- Country of Publication:
- Japan
- Language:
- Japanese
Similar Records
Field radiography using 100 Ci of Co-60 without interrupting adjacent manufacturing operations
Sensitivities of some photographic films and screens for proton radiography
Study of x ray and isotopic techniques for boreside radiography of tube-to-tubesheet welds
Conference
·
Sun Dec 31 23:00:00 EST 1978
·
OSTI ID:5164891
Sensitivities of some photographic films and screens for proton radiography
Journal Article
·
Fri Feb 01 00:00:00 EDT 1974
· Nuclear Instruments and Methods
·
OSTI ID:4329133
Study of x ray and isotopic techniques for boreside radiography of tube-to-tubesheet welds
Journal Article
·
Fri Jul 01 00:00:00 EDT 1977
· Mater. Eval.; (United States)
·
OSTI ID:7218652