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Positron annihilation in radiation capture centers in quartz and quartz glasses

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This study presents the results of a theoretical and experimental investigation of the process of positron annihilation in radiation capture centers (RCC) of quartz and quartz glasses irradiated byγ-rays. The value of the effective electron mass in the oxygen bridge atom vacancy (E′ center) is determined. This value proves to be larger than in the case of a quartz monocrystal and close to the value calculated from the optical absorption band of quartz glass (μ ∼ 5.0 me). It is shown that positron annihilation in [A1] centers is characterized by a greater half-width in the annihilation radiation angular correlation curve than in H-centers. The dependence of radiation capture center concentration on radiation dosage is obtained.

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Translated from Izvestiya Vysshikh Uchebnykh Zavadenii, Fizika, No. 4, pp. 105–109, April, 1974.

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Bartenev, G.M., Tsyganov, A.D. & Gorbachev, V.V. Positron annihilation in radiation capture centers in quartz and quartz glasses. Soviet Physics Journal 17, 525–528 (1974). https://doi.org/10.1007/BF00891016

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  • Quartz
  • Absorption Band
  • Radiation Dosage
  • Experimental Investigation
  • Optical Absorption