THE EFFECT OF OVERLAP IN THE MEASUREMENTS OF TRACK DENSITY IN A BUBBLE CHAMBER (in Russian)
Journal Article
·
· Pribory i Tekh. Ekspt.
OSTI ID:4305497
The possibility of measuring the ionization (track density) produced by charged particles in a bubble chamber was discussed and a method for carrying out such a measurement was proposed. Different methods of mesuring the ionization are reviewed, and an is given. The track density is defined as the initial number of nucleating bubbles pre unit length of track produced by a charged particle in the liquid. If the track density is sufficiently small, it can be determined by a simple count of the bubbles on a photograph of the track. In ordinary conditions, however, it is necessary to take into account random of overlap of the bubbles and thus a direct measurement of the track density is impossible. The following model is assumed. Images of the bubbles are circular and all have the same diameter d. The centers of these bubbles are randomly distibuted along a straight line with a mean density g. The distribution of the distances x between the centers of the bubbles is Poissonian and is therefore of the form: w(x)dx = g.exp(-gx)dx. When overlapping occurs, a track consists of clusters and gaps. The integal distribution of gap length can be derived from the Poissonian distribution and has the form P(1) = exp(-gl). The following size, and transparency of the track. The last is defined as the mean ratio of the total length of all the gaps greater than 1/sub o/ and the length of the track. It is shown parency of the track'' is most convenient, and for gd' greater than 2, the method of number of gaps'' in suitable. (TCO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-12-010846
- OSTI ID:
- 4305497
- Journal Information:
- Pribory i Tekh. Ekspt., Journal Name: Pribory i Tekh. Ekspt. Vol. Vol: No. 5
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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