首页   按字顺浏览 期刊浏览 卷期浏览 Concerning Amidol Development of Nuclear Emulsions
Concerning Amidol Development of Nuclear Emulsions

 

作者: G. D. Fatzer,  

 

期刊: Review of Scientific Instruments  (AIP Available online 1959)
卷期: Volume 30, issue 1  

页码: 22-27

 

ISSN:0034-6748

 

年代: 1959

 

DOI:10.1063/1.1716349

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A lowering of the development temperature introduces development defects which are characterized by the partial or total destruction of the developed image and by a deep coloration of the emulsion. These defects are eliminated by increasing the sodium sulfite concentration of the developer. Up to now contrast in nuclear emulsions has been evaluated subjectively by the experimenter; this forbids any comparison of the results obtained in different laboratories.This paper shows that to develop reliably at low temperatures with the usual developers, it becomes necessary to increase the ratio (Na2SO3)/(Amidol). For development temperatures of 10–15°C the concentration ratio needs to be 70% greater than the ones commonly used.A study of track and fog grain properties is carried out. It is shown that at a given temperature the mean gap length is practically independent of the development parameters. The optimum conditions at 14°C are determined with the help of a new quantity termed ``track visibility'' (K), a track to fog signal, and defined byK=blob length×track grain diameter/fog density×(fog grain diameter)2.

 

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