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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/18964

Title: Deuterium Retention in Polycrystalline Tungsten
Authors: Tian, Zhe
Advisor: Haasz, Anthony A.
Department: Aerospace Science and Engineering
Keywords: deuterium
polycrystalline tungsten
retention
Issue Date: 16-Feb-2010
Abstract: Deuterium retention in two types of polycrystalline tungsten was studied as a function of ion fluence, irradiation temperature and ion energy. Fluence dependence: D retention at 300 K tends to saturate in both Rembar and Plansee PCW. At 500 K, D retention in the Plansee PCW increases with increasing ion fluence, similar to previous results for Rembar tungsten. Even at a fluence of 8×10^25 D+/m2, no sign of saturation was observed. Temperature dependence: D retention in Plansee PCW decreases with increasing irradiation temperature (300 - 500 K). Energy dependence: varying the D+ energy from 100 to 500 eV/D+ plays a minor role in D retention in W, suggesting that D retention depends more on the W structure, irradiation temperature and fluence, rather than on the ion energy when the energy is below the displacement threshold.
URI: http://hdl.handle.net/1807/18964
Appears in Collections:Master
Institute for Aerospace Studies - Master theses

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