PROTON-PROTON COLLISIONS AT 30.0 Bev
Thesis/Dissertation
·
OSTI ID:4696055
The magnetically analyzed external, diffracted proton beam of the Brookhaven Alternating Gradient Synchrotron, AGS, was used to expose a stack of Ilford G-5 emulsion plates to 30.0 Bev protons. The energy distribution of the incident protons was analyzed experimentally (using an unbiased sampie of 80 incident proton tracks) and compared to two theoretical distributions. The theoretical distributions were obtained by a random number process and also by a convolution process, both using the distribution of second differences as obtained from the Moliere theory of multiple scattering. Of the 1354 interactions located in a distance of 484.0 meters (by on track scanning), 10 events were found to meet the selection criteria for elastic events, yielding an elastic cross section of 6.5 surface proces 2.1 mb. In addition, 16 elastic events were located by area scanning, and the total number of 26 elastic events was compared to the uniform optical model. The center of mass system angular distribution of elastically scattered protons did not seem to be in too good an agreement with the optical model for a purely absorbing proton. A total of 106 even prong inelastic events was found, of which about 50% were attributed to be proton-free-proton collisions, yielding an inelastic cross section of 34.2 surface proces 4.8 mb. The inelastic collisions were examined using multiple scattering, grain density, range, and angle measurements; and they were compared to Hagedorn's statistical theory calculations made at 25 Bev. Over-all agreement was not too good; however, the average kinetic energy of identified pions, K- mesons, and protons is in fairly good agreement, as is the charged pion multiplicity and over-all charged particie multiplicity. (Dissertation Abstr. 23; May 1963)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-026385
- OSTI ID:
- 4696055
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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