Effects of Mechanical and Thermal Stresses on the Absorption Coefficient and Penetration Range of β-Particles in Aluminum

Salehpour, B; Pirhoseinlu, T

Effects of Mechanical and Thermal Stresses on the Absorption Coefficient and Penetration Range of β-Particles in Aluminum

Document Type : Research Paper

Authors

B Salehpour

T Pirhoseinlu

Abstract

Many results have been obtained in our previous studies on the effects of structural defects on the physical properties of crystalline materials. In this work, we are presenting our experimental results for the influence of the structural deffects on the absorption coefficient and the penertration depth of β-particles in aluminum metal. For this investigation, 3 pieces of Al foils, with different thicknesses. were prepared. Then, one group of samples were annealed to show less defects. Other Al samples were exposed to heavily defect creating work, such as: hammering, rolling, and thermal quenching treatments. Then, by the use of the conventional method, the penetration depth of β-particles of different energies from ⁹⁰Sr, ³⁶Cl, and ¹³Cs sources were determined. Our results show that the measured R-values for the defected samples are higher than those of the annealed ones. Also, it was found that the penertration depth for the defected samples increases as the β-particle’s energy increases.

Highlights

B. Henderson, “Defects in Crystalline Solids,” Edward Arnold Press (1972).
M.W. Thompson, “Defects and radiation damage in metals,” Cambridge University Press (1969).
G.P. Pells, “Radiation effects and damage mechanism in ceramic insulators and window materials,” J. Nucl. Mat, 155-157/1, 67-76 (1988).
B. Salehpour, “Studies of residual stresses in Al using DSC and XRD methods,” J. Ultra Science, 12(3), 412-415 (2000).
R. Jasezek, “Carrier scattering by dislocations in semiconductors,” J. Mat. Sci, 12, 1-9 (2001).
C.D.A.I. Ryazonav and Etal, “Instability of interstitial clusters under ion and electron irradiation in ceramic materials,” J. Nucl. Sci, 23, 372-379 (2003).

Keywords

Crystal Defects

Absorption Coefficient

Penetration Depth

Beta Particles

Thermal Stresses

Radiation Effects

Aluminum

Crystal Structure

B. Henderson, “Defects in Crystalline Solids,” Edward Arnold Press (1972).
M.W. Thompson, “Defects and radiation damage in metals,” Cambridge University Press (1969).
G.P. Pells, “Radiation effects and damage mechanism in ceramic insulators and window materials,” J. Nucl. Mat, 155-157/1, 67-76 (1988).
B. Salehpour, “Studies of residual stresses in Al using DSC and XRD methods,” J. Ultra Science, 12(3), 412-415 (2000).
R. Jasezek, “Carrier scattering by dislocations in semiconductors,” J. Mat. Sci, 12, 1-9 (2001).
C.D.A.I. Ryazonav and Etal, “Instability of interstitial clusters under ion and electron irradiation in ceramic materials,” J. Nucl. Sci, 23, 372-379 (2003).