1959
DOI: 10.1016/0022-3115(59)90030-3
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The role of vacancies and dislocations in the nucleation and growth of gas bubbles in irradiated fissile material

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Cited by 468 publications
(110 citation statements)
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“…One is the gas driven model [62][63][64], in which bubbles are assumed to grow by coalescence or the loop punching mechanism [65]. As more deuterium is deposited and bubbles grow, cooperative fracture between the bubbles suddenly becomes an easy way of relieving their overpressure, thus initiating cracks, allowing internal gas release, and lifting the surface off the implanted material into dome-shaped blisters.…”
Section: Discussionmentioning
confidence: 99%
“…One is the gas driven model [62][63][64], in which bubbles are assumed to grow by coalescence or the loop punching mechanism [65]. As more deuterium is deposited and bubbles grow, cooperative fracture between the bubbles suddenly becomes an easy way of relieving their overpressure, thus initiating cracks, allowing internal gas release, and lifting the surface off the implanted material into dome-shaped blisters.…”
Section: Discussionmentioning
confidence: 99%
“…The magnitude of the observed compressive stress is determined relative to that of the free-standing crystals using the following equation for the hydrostatic pressure, P : 11 ) 2 ( 3 12 After the most rigorous post-growth annealing treatment at 800 °C for 48 hours, the nanocrystal size distribution is only slightly changed, as measured using the AFM technique presented in Ref. 8.…”
mentioning
confidence: 99%
“…The initial pressure creates a thermodynamic driving force for the radius of the cavity in the silica to increase. 12 We model this increase in cavity radius as resulting from the diffusion of matrix atoms away from the Ge/silica interface and into the interior of the SiO 2 . Though all the atomistic details of this diffusion process are not available, we assume that the O diffuses rapidly, and the stress relaxation is mediated by the slower diffusion of either Si atoms or SiO molecules, referred to as interstitial species, through the silica.…”
mentioning
confidence: 99%
“…Johnson and Shuttleworth (1)* have shown .that these gas atoms exhibit a very low atomic solubility of to less than 10-l1 in some metals in It is-postulated that the fission-gas atoms (3,4,5), initially trapped within the lattice, initiate movement by combining with one or two vacancies which-render the gas atoms mobile. The gas atom-vacancy combinations further react with other gasatoms or gas atom-vacancy combinations until two or three gas atoms have formed a nucleus (4).…”
Section: Importance Of the Studymentioning
confidence: 99%