I= NUCLEAR INTERACTION STUDIES OF HIGH ENERGY PARTICLES AND IONS USING DIELECTRIC TRACK DETECTORS
Pakistan Research Repository Home
 

Title of Thesis
NUCLEAR INTERACTION STUDIES OF HIGH ENERGY PARTICLES AND IONS USING DIELECTRIC TRACK DETECTORS

Author(s)
Muhammad Amjad Farooq
Institute/University/Department Details
University of the Punjab
Session
2000
Subject
Physics
Number of Pages
182
Keywords (Extracted from title, table of contents and abstract of thesis)
nuclear interaction, high energy particles, heavy ion physics, pion induced fission, elastic scattering, projectile detector reactions, ssntd technique, quasi-elastic scattering, deep-inelastic scattering, sequential fission

Abstract
In this research work the following reactions have been studied using polycarbonate and CR-39 plastic track detector:

1(8.5 MeV/u)132 Xe + Pb {polycarbonate} 2(15.9 MeV/u)197 Au + Bi {CR-39} 3(13.7 MeV/u)238 U + CR-39 4(500MeV/u)п- + Sn, An & Bi {CR-39} 5(672 MeV/u) п + Cu, Sn, Au & Bi {CR-39} 6(1068 MeV/u) п + Cu, Sn, Au & Bi {CR-39} 7(1665 MeV/u) п + Cu, Sn, Au & Bi {CR-39}

The reaction products emerging from the above mentioned reactions have been investigated to establish the nuclear reaction mechanisms. In reaction #1 carbonate (C16 H14O3) plastic has been used a solid state nuclear track detector( SSNTD) to detect the reaction products. While in the other reactions( #2 to #7) CR-39 (C12 H18O7) plastic has been used. The partial and total reaction cross section have been obtained using the statistics of different multiplicities of the inelastic events in the exit channels. The total reaction cross section gave been also obtained from the elastic set of data with the help of quarter point angle in the interaction of (8.5 MeV/u)132 Xe ions with Pb atoms and (15.9 MeV/u)197 Au ions with Bi atoms. The complete kinematical analysis has been done in order to investigate the nuclear interactions during the collision of (15.9 MeV/u)197 Au ion with the Bi atoms. The kinematical analysis for these reaction has been done using the internal calibration method. The fission reaction with inverted kinematics was studied using (13.7 MeV/u)238 U ions incident on the constituents of detector atoms (H, C & O).

The interaction of high energy negative pions have been studied with different targets in order to understand the pion-nucleus interactions and nuclear decay mechanism at high excitation energies. The pion-nucleus cross have been measured and angular correlation of the fission fragments have also been investigated.

Download Full Thesis
2645.58 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 Contents
190.64 KB
2 1 Introductions 1
292.51 KB
  1.1 Heavy ion physics 1
  1.2 Pion Induced Fission 7
  1.3 Dielectric track detectors 8
  1.4 Historical Review 11
  1.5 Reference
3 2 Heavy ion collisions 17
188.26 KB
  2.1 Elastic Scattering 18
  2.2 Quasi-Elastic & deep-Inelastic scattering 24
  2.3 Sequential Fission 26
  2.4 Compound Nucleus and Fusion Reactions 27
  2.5 References 14
4 3 Methodology 30
504.57 KB
  3.1 Experimental Techniques 30
  3.2 Particle Identification by SSNTD technique 44
  3.3 Reaction cross-section 51
  3.4 References 61
5 4 Experimental details and data collection 63
340.73 KB
  4.1 Sample preparation, Irradiation and Etching 63
  4.2 Uncertainties 64
  4.3 Scanning and Measurements 72
  4.4 Data Acquisition 74
  4.5 References 88
6 5 Results and discussions 89
1047.95 KB
  5.1 Projectile-Target Reactions 89
  5.2 Projectile detector reactions 110
  5.3 Pion Induced Reactions 118
  5.4 References 133
7 6 Summary 134
40.61 KB
8 7 Acknowledgments 137
26.43 KB