Accession Number : AD0481211

Title :   THE IONIZATION PRODUCED IN NUCLEAR EMULSION BY VERY RELATIVISTIC PARTICLES.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Hanson, Harlan D. ; Seng, William R. ; Weidman, Russell H.

Report Date : 1964

Pagination or Media Count : 53

Abstract : In order to determine the shape of the ionization curve in nuclear emulsions at values of gamma > 100, the blob density of relativistic electron tracks was measured. The pv of the pair produced electrons used was determined by multiple scattering. A total of 84.45 centimeters of electron track was blob counted and scattered. From gamma = 100 to gamma = 5400 the data were combined into 14 points each with a statistical uncertainty on blob density of less than than 1%. These points indicate a level plateau and show no deviation from this plateau within our statistical accuracy. Pions were used to estimate the minimum of the ionization curve, and ratio of blob density plateau to blob density minimum is estimated to be 1.140 + or - .020. (Author)

Descriptors :   *ELECTRON DENSITY), (*CHARGED PARTICLES, (*IONIZATION POTENTIALS, MEASUREMENT), ELECTRONS, NUCLEAR SCATTERING, GAMMA RAYS, PIONS, STAR TRACKERS, PROTONS, ELECTRON BEAMS.

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE