Radiation damage annealing

The thermal stability of the centers responsible for the local modes of vibration has been investigated. In GaP, Sobotta etal. (1981) observed that annealing of the implanted samples at 240°C for one hour leads to a narrowing of the 2204 cm 1 absorption line. This is due to the annealing of the radiation damage. Annealing at 400°C for one hour decreases drasti-... 

This feature in the In profiles resulted from the complex defects formed by In and radiation damage. Annealing led to an intense emission at about 525nm in the photoluminescence spectrum. This emission was due to defects which were related to the O vacancy. 

In addition to the generation of platelets, hydrogenation of silicon also induces electronic deep levels in the band gap. As in the case of platelet formation, these defects are considered to be unrelated to either plasma or radiation damage because they can be introduced with a remote hydrogen plasma. Comparison of depth distributions and annealing kinetics of the platelets and gap states has been used to a limited extent to probe the relationship among these manifestations of H-induced defects. 

Enriched or should be used for the reactor irradiation to eliminate unwanted background radiations from the other tellurium isotopes. Radiation damage to the source is unimportant since annealing (13) the ZnTe after irradiation did not change line intensity or width. 

Recovery of radiation damages of a material by isochronal annealing... 

At sufficiently high temperatures, the radiation damage will recover by recombination of the point defects and their aggregates. The various annealing steps have been... 

Waite, T. R. Theoretical Treatment of the Kinetics of Diffusion-Limited Reactions. Phys. Rev. 107, 463 (1957) Diffusion-Limited Annealing of Radiation Damage in Radium. Phys. Rev. 107, 471 (1957). 

Figure 8.58. BF micrograph showing neutron radiation damage in synthetic quartz (dose 3 x 10 nvt, followed by annealing at 900°C for 16 hours). (From Phakqr 1%7.)...

It will also be noted in Table 8.6 that for a dose Dq, crystals of amethyst and citrine can be recovered by annealing at 700°C, whereas the purer crystals (e.g., optical-quality natural and synthetic quartz) require a temperature of 900 to 1,110 C. The reasons for this behavior, and for the influence of neutron irradiation on subsequent electron radiation damage, are not clear. 

The number of absorption lines we obtain from the Cm " depends on the temperature at which radiation damage takes place. If, after annealing, the crystal is kept at room temperature, more absorption lines are found than when the crystal is placed at 77 °K. More diffusion of... 

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